Viscoelastic Properties of Homogeneous Block Copolymers.

Abstract

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-alpha-methylstyrene-b-styrene), poly(alpha-methylstyrene-b-styrene-b-alpha-methylstyrene) and poly(styrene-b-alpha-methylstryrene) were determined by stress relaxation methods. The results compare favorably with those predicted by the theory. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 15, 1977
Accession Number
ADA042044

Entities

People

  • D. R. Hansen
  • D. Soong
  • Meikun Shen

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alkenes
  • Block Copolymers
  • Block Polymers
  • California
  • Chemical Engineering
  • Coefficients
  • Copolymers
  • Elastic Properties
  • Engineering
  • Equations Of Motion
  • Experimental Data
  • Macromolecules
  • Molecular Weight
  • Molecules
  • Polymers
  • Relaxation Time

Readers

  • Polymer Science and Technology
  • Structural Dynamics.

Technology Areas

  • Microelectronics