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Viscoelastic properties of homogeneous block copolymers
Author(s) -
Shen M.,
Soong D.,
Hansen D. R.
Publication year - 1977
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760170811
Subject(s) - styrene , viscoelasticity , copolymer , materials science , homogeneous , relaxation (psychology) , polymer , stress relaxation , polymer chemistry , polymer science , thermodynamics , composite material , physics , psychology , social psychology , creep
The molecular theory of Rouse‐Bueche‐Zimm has been modified to predict the viscoelastic behavior of homogeneous block copolymers. The model consists of beads and springs whose magnitudes correspond to the types of blocks in the polymer. Maximum relaxation times can be computed by this model. Viscoelastic data for poly(styrene‐b‐α‐methyl styrene‐b‐styrene), poly(α‐methyl styrene‐b‐styrene‐b‐α‐methylstyrene) and poly(styrene‐b‐α‐methyl styrene) were determined by stress relaxation methods. The results compare favorably with those predicted by the theory.