Physics Seminar: Dr Elena Patyukova

Centre for Computational Physics

Date: Wednesday 21st of October 2020, 13:30.
Location: Online (MS Teams meeting).

‘Phase behavior of correlated copolymers’

by Dr Elena Patyukova, Department of Chemistry, Durham University, Durham, UK.

Abstract:

Poly(vinyl alcohol) (PVA) is a widely used water soluble, biodegradable polymer. In particular, PVA films are used for packaging of liquid detergents.  PVA cannot be synthesized directly by polymerization of ethenol but instead it is obtained by postpolymerization modification of polyvinyl acetate (PVAc).  Important property of PVA/c copolymers is that degree of randomness of its sequence can be varied by changing conditions of modification reaction and in most general case they are “blocky” (correlated) meaning that segments of one type tend to be arranged in blocks. Phase behavior of PVA/PVAc copolymer when mixed with additives is an important industrial problem and is known to depend strongly both on composition and degree of blockiness. 

In this work, we study phase behavior…

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