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Synthesis of poly(L-lactide)-block-polyisobutylene-block-poly(L-lactide), a new biodegradable thermoplastic elastomer

✍ Scribed by László Sipos; Miklós Zsuga; György Deák

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
296 KB
Volume
16
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

The anionic ring‐opening polymerization of L‐lactide was initiated by dipotassium‐poly‐isobutylene‐alcoholate telechelic polymer to yield poly(L‐lactide)‐block‐polyisobutylene‐block‐poly(L‐lactide) triblock copolymer, a partially biodegradable thermoplastic elastomer. The pure triblock copolymer was obtained by gradient column chromatography on silica gel. The molar mass and molar mass distribution of the block copolymer was ascertained by SEC and quantitative ^1^H NMR spectroscopy. It showed two glass transitions and microphase separation.

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