✦ LIBER ✦

Modification of styrene-isoprene copolymers—2. Chain extension with ethylene oxide

✍ Scribed by Z.G. Mitov; R.S. Velichkova

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 299 KB
Volume: 28
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(92)90081-c

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✦ Synopsis

Al~tract--Chain extension of styrene-isoprene hydroxyl-terminated prepolymers was used to obtain polymers having different sequences and lengths of styrene, isoprene, ethylene oxide and 1,3,6-trioxacyclooctane blocks. The structures and the chemical and composition homogeneities of the copolymers were determined by ~H-NMR and i.r. spectra, GPC analyses (with u.v. and RI detectors), DSC and by data on swelling and surface tension behaviour.

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