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Soft Matter Physics$
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Masao Doi

Print publication date: 2013

Print ISBN-13: 9780199652952

Published to Oxford Scholarship Online: December 2013

DOI: 10.1093/acprof:oso/9780199652952.001.0001

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Flow and deformation of soft matter

Flow and deformation of soft matter

(p.165) 9 Flow and deformation of soft matter
Soft Matter Physics

Masao Doi

Oxford University Press

The flow and deformation behaviours of soft matter are usually between those of fluids and elastic materials. For example, bubblegum can be stretched indefinitely like a fluid, but snaps back like an elastic material if a stretched piece is cut by scissors. The science that studies the flow and deformation of such complex materials is called rheology. Rheology is important in soft matter since many applications of soft matter rely on their unique rheological properties. This chapter discusses the rheological properties of polymeric materials (polymer solutions, melts, and cross-linked polymers). It covers the methods of macroscopic characterization of rheological properties of materials; and the molecular origins of the unique rheological properties of polymeric materials for polymer solutions, polymer melts, and liquid crystalline polymers.

Keywords:   rheology, viscoelasticity, non-linear viscosity, constitutive equation, dumbbell model, Rouse model, entanglement effect, reptation, tube model, liquid crystalline polymers

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