Macrophase and microphase separation in random comb copolymers

Damien P. Foster, David Jasnow, Anna C. Balazs

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

We introduce and analyze three models for comb copolymer melts that allow for randomness in the placement and number of teeth. In the first model the polymers are constructed using a two-parameter Markov process, which links dispersity in the number of teeth with correlations in their placement. In the other two models these two effects are separated so that the dispersity is allowed to vary while tooth-tooth correlations remain fixed. In one such model the tooth placement is uncorrelated, while in the second it is perfectly correlated. The behavior of these models is studied as a function of the dispersity in the number of teeth and the average number of teeth. The results pinpoint the factors that control micro- versus macrophase separation and thereby yield guidelines for controlling the phase behavior of comb copolymer melts.

Original languageEnglish
Pages (from-to)3450-3462
Number of pages13
JournalMacromolecules
Volume28
Issue number9
DOIs
Publication statusPublished - Apr 1995
Externally publishedYes

ASJC Scopus subject areas

  • Materials Chemistry

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