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Phase separation in poly(methyl methacrylate)-block-poly(2,3-dibromopropyl methacrylate) copolymers

✍ Scribed by Kenneth W. M. Davy

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
763 KB
Volume
195
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

AB block copolymers poly(methyl methacrylate)‐block‐poly(2,3‐dibromopropyl methacrylate) were prepared by a two‐stage process involving the sequential anionic polymerization of methyl methacrylate and allyl methacrylate followed by bromination of the pendant allylic groups. Transmission electron microscopy of thin sections of cast films revealed phase separation, the morphology depending upon composition of the block. In particulate form these copolymers gelled with methyl methacrylate to form doughs that could be moulded and heat cured to produce hard X‐ray opaque copolymers.

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