Presentation on theme: "Workshop series 2013 SJU-AAPS Student Chapter St. John’s University Oct. 10 2013, 5:00 PM Tapan Parikh St. John’s University, Queens, New York E-mail:"— Presentation transcript:
Workshop series 2013 SJU-AAPS Student Chapter St. John’s University Oct. 10 2013, 5:00 PM Tapan Parikh St. John’s University, Queens, New York E-mail: firstname.lastname@example.org; Phone: 718-990-8087 Rheometer
References Webinar Presentation: Viscoelasticity- Creep and Oscillatory Rheology. Plog, J,11 th July 2013. (Thermo Scientific website) Rotational Rheometery. Brno, 28- 29 th march 2012- school of rheology.www.malvern.com (Malvern Instruments website) Rheometer. www.tainstruments.comwww.tainstruments.com (TA Instruments website) Viscoelastic properties of polymers. Ferry, J. John Wiley & Sons, 3 rd edition 1
Rheology “Study of flow of matter in liquid state as well as soften solid state in which material responds as a plastic rather than deforming elastically in response to applied force.” * –Viscosity (measure of resistance to deformation) –Elasticity (tendency of solid material to return to original shape after deformation) Rheometer * Schowalter (1978) Mechanics of non-newtonian fluid pergamon 2
Types of rheometer Shear stress/ shear strain based Capillary rheometer Rotational cylinder –Cone and plate (homogenous sample) –Plate and plate (heterogeneous sample) Extensional stress based e.g. Rheoten (fiber spinning) Capillary break 3
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