NONEQUILIBRIUM MORPHOLOGIES OF A DIBLOCK COPOLYMER OF POLYISOPRENE AND POLY(n-BUTYL METHACRYLATE).

R. E. Cohen, F. S. Bates

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

This paper is concerned with the unusually wide variety of morphologies which can be obtained from a diblock copolymer of polyisoprene and poly(n-buty methacrylate). In experiments, the copolymer was synthesized using homogeneous anionic polymerization methods. Cast film samples of copolymers were examined by means of electron microscopy. The unusual morphologies exhibited by the polyisoprene/poly(n-butyl methacrylate) diblock may arise in part from the structure of the n-butyl methacrylate repeat unit. The polar groups in the ester moiety cause this methacrylate polymer to prefer polar solvents and to reject solvents of the nonpolar hydrocarbon variety; on the other hand, the n-butyl side-group of this monomer is likely to have a compatibilizing effect in the presence of hydrocarbons, including polyisoprene.

Original languageEnglish (US)
Pages (from-to)2143-2148
Number of pages6
JournalJournal of polymer science. Part A-2, Polymer physics
Volume18
Issue number10
DOIs
StatePublished - 1980

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