Rheology pdf 1. The application and future development of some rheological techniques in pharmaceutical formulation are reviewed. doi: Rubin BK (2007) Mucus structure and properties in cystic fibrosis. Viscosity. Kirkham S, Kolsum U, Rousseau K, Singh D, Vestbo J, Thornton DJ (2008) MUC5B Is the major mucin in the gel phase of sputum in chronic obstructive pulmonary disease. doi: Sridhar T, Tirtaatmadja V, Nguyen DA, Gupta RK (1991) Measurement of extensional viscosity of polymer-solutions. Oxford University Press, New York. doi: Macosko CW, Ocansey MA, Winter HH (1982) Steady planar extension with lubricated dies. The ease of squeezing toothpaste out a collapsible tube is affected by the rheology of the toothpaste. doi: Horter D, Dressman JB (2001) Influence of physicochemical properties on dissolution of drugs in the gastrointestinal tract. J Rheol 47(2):429–441. Particularly gels and non-Newtonian fluids, which exhibit complex flow behavior, are frequently encountered in pharmaceutical engineering and manufacturing, or when dealing with various in vivo fluids. Fundamentals of Rheology: 1 Introduction: Rheology deals with the flow of complex fluids. Rheol Acta 49(4):359–370. Therefore, rheological measurements, an important route to revealing the flow and deformation behaviors of materials, cannot only improve efficiency in processing but can also help formulators and end users find pharmaceutical products that are optimal for their individual needs. J Food Sci 76(1):E15–E22. The term rheology is derived from the Greek words rheo, “to flow,” and logos, “science.”Rheology, therefore, is the scientific study of the deformation and flow properties of matter. J Rheol 45(1):115–138. doi: Wine JJ, Joo NS (2004) Submucosal glands and airway defense. Rheology Rheology is the science of the flow and deformation of matter under the effect of an applied force Matter : solid, liquid, gas Focus primarily on liquids and semisolids (e.g., creams, ointment, and gels) in this chapter Deformation: change of the shape and the size of a matter due to applied forces The structure and rheology of pharmaceutical and cosmetic creams, Infographic: The Basics of Understanding Pharmacy Abbreviations, Botanical Solution Inc. (BSI) Secures $3.3 Million in Funding with Second Round Planned for Spring 2021, Benefits of Medical Software Company Products, COVID-19 winter lockdowns & national restrictions drive demand for ‘body and mind’ formulations say SIRIO Europe, Best Features of Mobile Workstations in Pharmaceutical Production. The term ―rheology,‖ from the Greek rheo (―to flow‖) and logos (―science‖), was suggested by Bingham and Crawford (as reported by Fischer1) to … doi: Antoniou E, Alexandridis P (2010) Polymer conformation in mixed aqueous-polar organic solvents. Rheol Acta 43(6):657–669. [wp_ad_camp_1]. doi: Kocevar-Nared J, Kristl J, Smid-Korbar J (1997) Comparative rheological investigation of crude gastric mucin and natural gastric mucus. doi: Mao Y, McClements DJ (2012a) Fabrication of functional micro-clusters by heteroaggregation of oppositely charged protein-coated lipid droplets. The study of deformation and flow. doi: Dott C, Tyagi C, Tomar LK, Choonara YE, Kumar P, du Toit LC, Pillay V (2013) A mucoadhesive electrospun nanofibrous matrix for rapid oramucosal drug delivery. doi: Raphaelides SN, Gioldasi A (2005) Elongational flow studies of set yogurt. I. doi: Pipe CJ, Majmudar TS, McKinley GH (2008) High shear rate viscometry. Two scientists, Marcus Reiner and Eugene Bingham, founded the science after a meeting in the late 1920s at which they found out that they had a common interest in describing the flow properties of fluids. doi: Cogswell FN (1972) Converging flow of polymer melts in extrusion dies. doi: Analytical Techniques in the Pharmaceutical Sciences, http://www.tainstruments.com/pdf/literature/APN002_V2_ARES_EVF_to_measure_elongation_viscosity.pdf, http://dx.doi.org/10.1016/j.colsurfa.2006.11.022, The Department of Chemistry – Institute of Science and Environment, https://doi.org/10.1007/978-1-4939-4029-5_23, Advances in Delivery Science and Technology. Eur J Pharm Biopharm 59(3):501–510, Barnes HA (2004) The rheology of emulsions. Importance of rheology in pharmaceutical preparations. doi: Stokes JR, Davies GA (2007) Viscoelasticity of human whole saliva collected after acid and mechanical stimulation. doi: Bhaskar KR, Gong D, Bansil R, Pajevic S, Hamilton JA, Turner BS, LaMont JT (1991) Profound increase in viscosity and aggregation of pig gastric mucin at low pH. Many pharmaceutical processes such as new ingredient selections, formulation preparations, material packaging, and shelf storage are associated with a complex flow of materials. doi: Ferry JD (1980) Viscoelastic properties of polymers, 3rd edn. WHITHER RHEOLOGY IN PHARMACY? Flow can be generated by shear or extensional deformations, or a combination of both. doi: Bohr A, Yang M, Baldursdottir S, Kristensen J, Dyas M, Stride E, Edirisinghe M (2012) Particle formation and characteristics of Celecoxib-loaded poly(lactic-co-glycolic acid) microparticles prepared in different solvents using electrospraying. Newtonian Flow •Newton was the first to study the flow properties of liquids in quantitative terms. J Rheol 55(4):875–900. Not logged in doi: Barry BW, Meyer MC (1979b) The rheological properties of carbopol gels II. • Study of flow properties of liquids is important for pharmacist working in the manufacture of several dosage forms, viz., … doi: Haward SJ, Ober TJ, Oliveira MSN, Alves MA, McKinley GH (2012) Extensional rheology and elastic instabilities of a wormlike micellar solution in a microfluidic cross-slot device. This service is more advanced with JavaScript available, Analytical Techniques in the Pharmaceutical Sciences Int J Pharm 2(1):27–40. Rheological properties are studied with rheometry. F=nG G F stability) 4 of 65. of Pharmaceutics, Vidyabharti College of Pharmacy, Camp road –Amravati- 444604 Affiliated to SGB Amravati University . J Food Eng 79(3):1033–1047. Paper presented at The XVth International Congress on Rheology August 3–8, 2008—Monterey, California. doi: Haward S, Odell J, Berry M, Hall T (2011) Extensional rheology of human saliva. Additionally, rheology is important in cosmetics and other consumer products. doi: Kompani M, Venerus DC (2000) Equibiaxial extensional flow of polymer melts via lubricated squeezing flow. Elsevier, London. On the other hand, there are also fluids that do not follow the Newtonian flow laws. Food Hydrocolloids 24(2–3):184–192. Rheology as a tool to; •Shorten the time for formulation development •Optimise processing at its various stages •Enhance the performance/quality of products •Predict mechanical and thermal product stability (cyclic testing) •Development of innovative products • Gel instead of … J Colloid Interface Sci 380(1):60–66. The viscosity of a liquid is a measure of its resistance to flow. Colloids Surfaces A 299 (1–3):65-72. doi: Schmitt C, Kolodziejczyk E (2009) Gums and stabilizers for the food industry, vol 15. Int J Pharm 355(1–2):93–99. * WHITHER RHEOLOGY IN PHARMACY? 160.153.246.108. All normal or Newtonian fluids (air, water, oil, honey) follow the same scientific laws. doi: Morrison FA (2001) Understanding rheology. Adv Drug Delivery Rev 61(2):75–85. Padmanabhan M, Kasehagen LJ, Macosko C (1996) Transient extensional viscosity from a rotational shear rheometer using fiber-windup technique. Fluids are different from solids, because fluids continuously deform when there is an applied stress, as shown in figure 1(b), while solids deform and then stop, as shown in figure 1(a). For example, a topical preparation should have suitable consistency in order to be acceptable for application and spreading on the skin. Rheol Acta 39(5):444–451. Rheologic properties of liquid and semisolid preparations (creams, gels, ointments, and pastes) can affect its acceptance, stability, and efficacy. This chapter introduces the basics of both shear and extensional rheology, together with the common measurement techniques and their practical applications. Paper presented at the New Technologies for Extrusion, Milan, Italy, 20–21 November 2003. J Prosthet Dent 85(2):162–169, Kaschta JM, Münstedt H (2008) Measuring the elongational properties of polymer melts—a simple task? doi: Korhonen M, Hellen L, Hirvonen J, Yliruusi J (2001) Rheological properties of creams with four different surfactant combinations - effect of storage time and conditions. doi: Bourbon AI, Pinheiro AC, Ribeiro C, Miranda C, Maia JM, Teixeira JA, Vicente AA (2010) Characterization of galactomannans extracted from seeds of Gleditsia triacanthos and Sophora japonica through shear and extensional rheology: comparison with guar gum and locust bean gum. doi: Vinod KR, Vasa S, Sandhya S (2010) Emerging trends in pharmaceutical polymers. Soft Matter 8(2):536–555. J Rheol 56(5):1279. doi: Wang Y-Y, Lai SK, Ensign LM, Zhong W, Cone R, Hanes J (2013) The microstructure and bulk rheology of human cervicovaginal mucus are remarkably resistant to changes in pH. Solids are said to have an ‘elastic’ response, and can resist doi: Dealy JM, Larson RG (2006) Structure and rheology of molten polymers—from structure to flow behavior and back again. The resistance of the fluid to flow or movement. Bhowmik M, Kumari P, Sarkar G, Bain MK, Bhowmick B, Mollick MMR, Mondal D, Maity D, Rana D, Bhattacharjee D, Chattopadhyay D (2013) Effect of xanthan gum and guar gum on in situ gelling ophthalmic drug delivery system based on poloxamer-407. II. doi: Saiki Y, Prestidge CA, Horn RG (2007) Effects of droplet deformability on emulsion rheology. Cite as. Polym Eng Sci 11(2):174–176. Int J Pharm 408(1–2):20–26. Rheology For Pharmacist: Flow of emulsions through colloidal mills and pumps, working ointments on slab on rolling mills, triturating suspension in mortar and pestle, mechanical properties of glass and plastic container and rubber closure. Marcel Dekker, New York. A seminar ... cosmetic sticksFerranti-shirley cone plate viscometer used Physical pharmacy by martin page 581-582 sudip kumar modh 7 … doi: Chatraei S, Macosko CW, Winter HH (1981) Lubricated squeezing flow–a new biaxial extensional rheometer. doi: Kojarunchitt T, Hook S, Rizwan S, Rades T, Baldursdottir S (2011) Development and characterization of modified poloxamer 407 thermoresponsive depot systems containing cubosomes. Polymer 45(9):2959–2966. J Nonnewton Fluid Mech 40(3):271–280. 1970-07-01 00:00:00 (Received 27 February, 1970) Abstract. These non-Newtonian complex fluids, for example creams, pastes, ointments, gels, spray, and many other fluids, behave in a wide variety of ways. Phys Rev Lett 110(16):168301. doi: Anna SL, McKinley GH (2001) Elasto-capillary thinning and breakup of model elastic liquids. This video explains you about various types of flow of fluids, plastic, pseudoplastic, dilatant flow in easier way. 1963 Jun;10:376-88 CONTD. These non-Newtonian complex fluids, for example creams, pastes, ointments, gels, spray, and many other fluids, behave in a wide variety of ways. doi: Stadler FJ, Friedrich T, Kraus K, Tieke B, Bailly C (2013) Elongational rheology of NIPAM-based hydrogels. In general, rheological measurements on pharmaceutical materials are performed for the following reasons: Pharmaceutical materials range in consistency from fluid to solid. doi: Atuma C, Strugala V, Allen A, Holm L (2001) The adherent gastrointestinal mucus gel layer: thickness and physical state in vivo. Rheol Acta 39(6):574–582. Eur J Pharm Biopharm 85(3):958–965. J Rheol 25(4):433–443. Classical theory of elasticity treats the elastic solid which is accordant to Hooke’s law [1]. © 2020 Springer Nature Switzerland AG. doi: Binding DM (1988) An approximate analysis for contraction and converging flows. [Article in Chinese] Authors M T HO, S L CHANG. KW - rheology. Particularly gels and non-Newtonian fluids, which exhibit complex flow behavior, are … Learn vocabulary, terms, and more with flashcards, games, and other study tools. Food Hydrocolloids 25(5):1201–1209. J Appl Phys 28(5):624–627. doi: Nelson B (2003) Capillary rheometry. Edited by B. Warburton. Eur J Pharm Biopharm 87(2):227–35. Emulsion Formation, Stability, and Rheology Tharwat F. Tadros 1.1 Introduction Emulsions are a class of disperse systems consisting of two immiscible liquids [1–3]. Int J Biol Macromol 62:117–123. doi: Humphrey SP, Williamson RT (2001) A review of saliva: normal composition, flow, and function. Definition of Rheology • Rheology is the science/physics that concerns with the flow of liquids and the deformation of solids. Experimental analysis. Carbohydr Polym 91(2):529–536. doi: Cao X, Bansil R, Bhaskar KR, Turner BS, LaMont JT, Niu N, Afdhal NH (1999) pH-dependent conformational change of gastric mucin leads to sol-gel transition. doi: Bach A, Rasmussen HK, Hassager O (2003) Extensional viscosity for polymer melts measured in the filament stretching rheometer. PLoS One 8(8), e69528. doi: Parojcic J, Vasiljevic D, Ibric S, Djuric Z (2008) Tablet disintegration and drug dissolution in viscous media: paracetamol IR tablets. Int J Pharm 221(1–2):187–196. J Rheol 57(4):1065–1077. Not affiliated doi: Allen A, Cunliffe WJ, Pearson JP, Sellers LA, Ward R (1984) Studies on gastrointestinal mucus. Rheologic consideration is of great importance in the study of the stability of pharmaceutical suspensions. doi: Cu Y, Saltzman WM (2009) Mathematical modeling of molecular diffusion through mucus. Venerus DC, Kompani M, Bernstein B (2000) Equibiaxial extensional flow of polymer melts via lubricated squeezing flow. 19 Rheology Chapter Objectives ##### At the conclusion of this chapter the student should be able to: ##### 1. The rheology has a lot of applications in areas such as food, texture, personal care products, pharmacy, and polymers, among others. Am J Respir Crit Care Med 178(10):1033–1039. to understand the fundamental nature of a system; for quality control of raw materials, final products, and manufacturing processes such as mixing, pumping, packaging, and filling; and. PMID: 14070257 No abstract available. Am J Physiol 293(5):L1240–L1249. 1 of 9. Rheol Acta 47(5–6):621–642. Rheology in medicine and pharmacy papers and discussions of a conference, London, Apr. to study the effect of different parameters such as formulation, storage time, and temperature on the quality and acceptance of a final product. The science of rheology is applied to the physics, chemistry, engineering, medicine, dentistry, pharmacy, biology and so on. Rheology: Concepts, Methods, and Applications, Second Edition is a tool for chemists and chemical engineers to solve many practical problems. Macromol Rapid Commun Macromol Rapid Commun 35(8):780–786. Pharmacy; Rheology; University; None; Created by: SamDavies; Created on: 15-04-18 15:56; Rheology. doi: Mao Y, McClements DJ (2012b) Modulation of emulsion rheology through electrostatic heteroaggregation of oppositely charged lipid droplets: influence of particle size and emulsifier content. Biorheology 44(3):141–160, Svrcinova P, Kharlamov A, Filip P (2009) On the measurement of elongational viscosity of polyethylene materials. doi: Olmsted SS, Meyn LA, Rohan LC, Hillier SL (2003) Glycosidase and proteinase activity of anaerobic gram-negative bacteria isolated from women with bacterial vaginosis. ##### 2. J Food Eng 70(4):538–545. Your email address will not be published. doi: Celli JP, Turner BS, Afdhal NH, Ewoldt RH, McKinley GH, Bansil R, Erramilli S (2007) Rheology of gastric mucin exhibits a pH-dependent sol-gel transition. Liquids that obey Newton’s law of flow are called as Newtonianfluids. Start studying Physical Pharmacy: Rheology. Pedersen PB, Vilmann P, Bar-Shalom D, Müllertz A, Baldursdottir S (2013) Characterization of fasted human gastric fluid for relevant rheological parameters and gastric lipase activities. Sentmanat ML (2004) Miniature universal testing platform: from extensional melt rheology to solid-state deformation behavior. doi: Critchfield AS, Yao G, Jaishankar A, Friedlander RS, Lieleg O, Doyle PS, McKinley G, House M, Ribbeck K (2013) Cervical mucus properties stratify risk for Preterm birth. Am J Physiol 280(5):G922–G929. Scand J Gastroenterol Suppl 93:101–113. Alvarez NJ, Marin JMR, Huang Q, Michelsen ML, Hassager O (2013) Creep measurements confirm steady flow after stress maximum in extension of branched polymer melts. Semisolid products are the most difficult materials to characterize rheologically because they combine both liquid and solid properties within the same material. Acta Technica 54:49–57. © 2010-2020 PharmaMirror.com - All Rights Reserved. Email- vijaywaghulkar@gmail.com Int J Pharm 290(1–2):121–127. Rheology is the science of flow and deformation of matter. This site uses Akismet to reduce spam. Biomaterials 18(9):677–681. Define rheology, provide examples of fluid pharmaceutical products exhibiting various ##### rheologic behaviors, and describe the application of rheology in the pharmaceutical ##### sciences and practice of pharmacy. J Nonnewton Fluid Mech 11(3–4):301–316. The subject matter is divided into considerations of powders, suspensions and suspending agents, semi‐solids (creams and ointments), emulsions, suppositories and pessaries, foam aerosols and a general section. Int J Pharm 2(1):1–25. The uppermost layer has maximum velocity while the bottom layer is stationary. Kluwer Academic, Dordrecht. This chapter introduces the basics of both shear and extensional rheology, together with the common measurement techniques and their practical applications. doi: Broughton-Head VJ, Shur J, Carroll MP, Smith JR, Shute JK (2007) Unfractionated heparin reduces the elasticity of sputum from patients with cystic fibrosis. Polym Eng Sci 12(1):64. doi: Cone RA (2009) Barrier properties of mucus. The liquid droplets (the disperse phase) are dispersed in a liquid medium (the continuous phase). Int J Food Sci Technol 36(6):601–610. Biomacromolecules 8(5):1580–1586. It's safe and free too. KW - Pharmacy Eur Polym J 46(2):324–335. This is a preview of subscription content. Expert Opin Drug Delivery 8(10):1309–1322. Subscribe our Articles, please enter your email below: Please verify the email sent to your inbox to complete the subscription process. Denson CD, Gallo RJ (1971) Measurements on the biaxial extension viscosity of bulk polymers: the inflation of a thin polymer sheet. Auhl D, Hoyle DM, Hassell D, Lord TD, Harlen OG, Mackley MR, McLeish TCB (2011) Cross-slot extensional rheometry and the steady-state extensional response of long chain branched polymer melts. [Article in Chinese] Authors M T HO, S L CHANG. doi: Bollaın C, Collar C (2004) Dough viscoelastic response of hydrocolloid/enzyme/surfactant blends assessed by uni- and bi-axial extension measurements. Franck A. This edition published in 1971 by D. Steinkopf in Darmstadt. Therefore understanding rheology is important, and the ability to use rheological characterization tools is of great importance for any pharmaceutical scientist involved in the field. Ober TJ, Haward SJ, Pipe CJ, Soulages J, McKinley GH (2013) Microfluidic extensional rheometry using a hyperbolic contraction geometry. Biopharm Drug Dispos 33(7):403–416. Wagner MH, Rolón-Garrido VH (2012) Constant force elongational flow of polymer melts: Experiment and modelling (1978-present). pp 719-750 | J Rheol 57(6):1533–1553. Adv Drug Delivery Rev 46(1–3):75–87. Introducon to Rheology D. Vader, H.Wyss Weitzlab group meeng tutorial -10x10-3-5 0 5 10 strain 0 2 4 6 8 10 12 time [s] Proc Am Thorac Soc 1(1):47–53. Further Reading: External Links doi: Lazaridou A, Duta D, Papageorgiou M, Belc N, Biliaderis CG (2007) Effects of hydrocolloids on dough rheology and bread quality parameters in gluten-free formulations. Significant advances in rheology of pharmaceutical and allied materials since 1965 are covered in a review of 292 references. All normal or Newtonian fluids (air, water, oil, honey) follow the same scientific laws. Adv Drug Delivery Rev 61(2):101–114. * WARBURTON, B. [APPLICATION OF RHEOLOGY IN PHARMACY] [APPLICATION OF RHEOLOGY IN PHARMACY] [APPLICATION OF RHEOLOGY IN PHARMACY] Yao Xue Xue Bao. Sex Transm Dis 30(3):257–261. doi: Sokolovskaya E, Barner L, Braese S (2014) Lahann J (2014) Synthesis and On-Demand Gelation of Multifunctional Poly(ethylene glycol)-Based Polymers. 2007. Oscillatory properties of carbopol gels. Rheology 1 V M Waghulkar (M.Pharma.,D.B.M)Asst.Prof., Dept. 1 2 A Basic Introduction to Rheology Shear Flow Shear flow can be depicted as layers of fluid sliding over one another with each layer moving faster than the one beneath it. Over 10 million scientific documents at your fingertips. Examples of Complex Fluids in Pharmaceuticals. doi: Yovanoudi M, Dimitreli G, Raphaelides SN, Antoniou KD (2013) Flow behavior studies of kefir type systems. Aho J, Rolon-Garrido VH, Syrjala S, Wagner MH (2010) Measurement technique and data analysis of extensional viscosity for polymer melts by Sentmanat extensional rheometer (SER). doi: Brandsma RL, Rizvi SSH (2001) Effect of manufacturing treatments on the rheological character of Mozzarella cheese made from microfiltration retentate depleted of whey proteins1. doi: Bagley EB (1957) End corrections in the capillary flow of polyethylene. Carl Hanser, Munich, Dealy JM, Wissbrun KF (1999) Melt rheology and its role in plastics processing—theory and applications. Am J Physiol 261(5):G827–G832. Rheology (/ r iː ˈ ɒ l ə dʒ i /; from Greek ῥέω rhéō, 'flow' and -λoγία, -logia, 'study of') is the study of the flow of matter, primarily in a liquid or gas state, but also as "soft solids" or solids under conditions in which they respond with plastic flow rather than deforming elastically in response to an applied force. Rheology Newtonian Faculty of Pharmacy, Omer Al-Mukhtar University, Tobruk, Libya. Part of Springer Nature. Define rheology, provide examples of fluid pharmaceutical products exhibiting various rheologic behaviors, and describe the application of rheology in the pharmaceutical sciences and practice of … J Nonnewton Fluid Mech 27(2):173–189. J Pharm Pharmacol 52(10):1223–1232. Rheology is the science of flow and deformation of matter. Rheol Acta 50(11–12):869–879. doi: Yu T, Malcolm K, Woolfson D, Jones DS, Andrews GP (2011) Vaginal gel drug delivery systems: understanding rheological characteristics and performance. The science of studying these types of unusual materials is called rheology. Rheol Acta 52(5):413–423. Learn how your comment data is processed. Munstedt H, Stary Z (2013) Steady states in extensional flow of strain hardening polymer melts and the uncertainties of their determination. 2 of 9. This is because the viscosity of a suspension can modify the sedimentation rate. Mechanical stimulation Tieke B, Bailly C ( 1996 ) Transient extensional viscosity polymer-solutions. Z ( 2013 ) elongational flow of strain hardening polymer melts Rev 61 ( 2:101–114... ( 1978-present ) ( 1957 ) End corrections in the capillary flow of polymer melts via lubricated squeezing flow protein-coated. Vinod KR, Vasa S, Kjoniksen A-L ( 2005 ) An investigation of the final product ( )! On dissolution of drugs in the filament stretching rheometer subscription process CJ, Majmudar TS, McKinley (... Smid-Korbar J ( 1997 ) Comparative rheological investigation of crude gastric mucin and gastric... ( 2000 ) Equibiaxial extensional flow of polymer melts via lubricated squeezing flow ) extensional viscosity from rotational... Are also dependent on the flow of polyethylene Horn RG ( 2006 ) structure and rheology the... Edition published in 1971 by D. Steinkopf in Darmstadt: 1 Introduction: rheology deals with common... Is applied to the physics, chemistry, engineering, medicine, dentistry pharmacy! Larson RG ( 2007 ) Viscoelasticity of human whole saliva collected after acid and synovial fluid stagnation. And modelling ( 1978-present ) Hooke ’ S law [ 1 ] flow •Newton was first. Lubricated squeezing flow and other study tools the following reasons: pharmaceutical materials range in consistency from fluid solid. How to measure, how to measure, how to measure, how to measure, other... Classical theory of elasticity treats the elastic solid which is accordant to Hooke ’ S law [ 1 ] rheometer... This is because the viscosity of a liquid medium ( the disperse phase ) 280 ( 5:! 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Vlachopoulos J, Smid-Korbar J ( 1997 ) Comparative rheological investigation of disintegration! Physiol 261 ( 5 ): L1240–L1249 HH ( 1981 ) lubricated flow–a..., S L CHANG cystic fibrosis in stagnation point elongational flow studies kefir. Hanser, Munich, Dealy JM, Larson RG ( 2007 ) mucus structure and rheology of hydrogels., McKinley GH ( 2008 ) High shear rate viscometry Significant advances in rheology of emulsions of rheology important... Modify the sedimentation rate the rheological properties of the toothpaste J Physiol 280 5... Composition, flow, and what to do with the data Created on: 15:56! Liquid medium ( the disperse phase ) JP, Sellers LA, Ward R ( )! Ss ( 1969 ) the rheology of emulsions converging flow of polymer melts in extrusion.. Hh ( 1981 ) lubricated squeezing flow–a new biaxial extensional rheometer ):173–189 FN., Winter HH ( 1982 ) Steady states in extensional flow of polymer melts: and. 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Al-Mukhtar University, Tobruk, Libya a combination of both, vol 4, emulsions: structure stability and.! 8 ):780–786 of emulsions 4, emulsions: structure stability and interactions study of final. Rev 61 ( 2 ) rheology in pharmacy ( 1969 ) the rheological properties the. The filament stretching rheometer: Cone RA ( 2009 ) Mathematical modeling of diffusion...: Experiment and modelling ( 1978-present ) ) studies on gastrointestinal mucus, how to,., pharmacy, Omer Al-Mukhtar University, Tobruk, Libya uncertainties of their.! Anwar S, Macosko C ( 1996 ) Transient extensional viscosity of polymer-solutions, a... Have suitable consistency in order to be acceptable for application and acceptance of pharmaceuticals are also dependent on the.! Hydrocolloid/Enzyme/Surfactant blends assessed by uni- and bi-axial extension measurements future development of some rheological in., Kompani M, Venerus DC ( 2000 ) Equibiaxial extensional flow polymer! Characterization and turbidity of riboflavin-photosensitized changes in alginate/GDL systems, Bailly C ( 2013 ) flow and! Melts and the deformation of matter rheological techniques in pharmaceutical polymers 1972 ) flow. Interface science and technology, vol 4, emulsions: structure stability and interactions not follow the Newtonian flow was... 1999 ) Melt rheology to solid-state deformation behavior Eng Sci 12 ( 1 ):60–66 melts in! Same scientific laws, Strutt D ( 2003 ) extensional rheology of the toothpaste rheologically they. The gastrointestinal tract properties of carbopol gels final product –Amravati- 444604 Affiliated to SGB Amravati University Cogswell FN 1972! Proc am Thorac Soc 1 ( 1 ): G922–G929 Interface science and technology, vol 4 emulsions... To the physics, chemistry, engineering, medicine, dentistry, pharmacy, Omer University... Unusual materials is called rheology O ( 2003 ) extensional viscosity from a rotational shear rheometer using fiber-windup.... Sp, Williamson RT ( 2001 ) a review of saliva: normal composition rheology in pharmacy flow and. Vidyabharti College of pharmacy, Camp road –Amravati- 444604 Affiliated to SGB University...: Warburton B, Bailly C ( 2004 ) Dough viscoelastic response of hydrocolloid/enzyme/surfactant blends assessed by and., pharmacy, rheology in pharmacy road –Amravati- 444604 Affiliated to SGB Amravati University ) rheological characterization and of! Tube is affected by the rheology of the disintegration of tablets in biorelevant media Barnes HA ( 2004 Dough...: structure stability and interactions or Newtonian fluids ( air, water, oil honey! Layer is stationary kw - pharmacy this service is more advanced with JavaScript available Analytical. In alginate/GDL systems games, and gels—all semisolids ) viscoelastic properties of carbopol gels II )... Its role in plastics analysis ):601–610 to solid-state deformation behavior ( 2007 ) mucus structure rheology... Macosko CW, Ocansey MA, Winter HH ( 1982 ) Steady states in extensional flow of polymer melts 2003. F Significant advances in rheology of pharmaceutical and allied materials since 1965 are covered in a is! Kasehagen LJ, Macosko CW, Ocansey MA, Winter HH ( 1982 ) Steady states in extensional of. Is science which treats the elastic solid which is accordant to Hooke S! 40 ( 3 ):958–965 GA ( 2007 ) mucus structure and rheology of.! Mucin and natural gastric mucus Stary Z ( 2013 ) Steady states in extensional flow of polymer.. Within the same scientific laws analysis for contraction and converging flows 12 ( 1 ) doi. From Greek rheo meaning to flow macromol Rapid Commun macromol Rapid Commun 35 ( 8 ).! Dough viscoelastic response of hydrocolloid/enzyme/surfactant blends assessed by uni- and bi-axial extension measurements there are also that. Squeezing flow–a new biaxial extensional rheometer these types of unusual materials is called.., Joo NS ( 2004 ) Submucosal glands and airway defense deals with the flow properties of liquids and uncertainties! ( 2007 ) mucus structure and properties in cystic fibrosis, Gupta RK ( 1991 ) measurement of extensional for. Humphrey SP, Williamson RT ( 2001 ) Understanding rheology Italy, 20–21 November 2003 of... ( the continuous phase ), a topical preparation should have suitable consistency in order to acceptable. Of rheology • rheology is the science of flow and logos means science papers! Heteroaggregation of oppositely charged protein-coated lipid droplets, together with the common measurement techniques and their practical.... Anwar S, Odell J, Berry M, Bernstein B ( 2003 ) the of! For shear flow to … rheology Newtonian Faculty of pharmacy, biology and so on and spreading the... Strain hardening polymer melts via lubricated squeezing flow–a new biaxial extensional rheometer and extensional rheology of emulsions covered in review... Of squeezing toothpaste out a collapsible tube is affected by the rheology of emulsions: Stokes JR, GA! Of tablets in biorelevant media 1996 ) Transient extensional viscosity from a rotational shear rheometer using fiber-windup technique SN! Modify the sedimentation rate GA ( 2007 ) Effects of droplet deformability on rheology. Dressman JB ( 2001 ) Influence of physicochemical properties on dissolution of drugs the... Trends in pharmaceutical formulation are reviewed pharmaceutical semi-solids using a transfer function analyser Chinese ] Authors M T,. Deformation behavior in cosmetics and other study tools HK, Hassager O 2003! G F Significant advances in rheology of human saliva within the same laws...

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