NEW TELECHELIC POLYMERS AND SEQUENTIAL COPOLYMERS BY POLYFUNCTIONAL INITIATOR-TRANSFER AGENTS (INIFERS) - 7. SYNTHESIS AND CHARACTERIZATION OF alpha , omega -DI(HYDROXY)POLYISOBUTYLENE.

Bela Ivan, Joseph P. Kennedy, Victor S.C. Chang

Research output: Contribution to journalArticle

158 Citations (Scopus)

Abstract

In the reported experiments, a new telechelic polyisobutylene diol, HO-CH//2-PIB-CH//2-OH, carrying two terminal primary hydroxyl end groups has been prepared from alpha , omega -di(isobutenyl)polyisobutylene, CH//2 equals C(CH//3)-CH//2-PIB-CH//2C(CH//3) equals CH//2, by regioselective hydroboration followed by alkaline hydrogen peroxide oxidation. Infrared (IR) spectra, **1H-NMR analysis of the pure and silylated products, and ultraviolet (UV) spectra of phenylisocyanate-treated diols indicate quantitative yields and two -CH//2OH termini per polyisobutylene chain. The viscosity of HO-CH//2-PIB-CH//2-OH is higher than that of the starting alpha , omega -diolefin. The telechelic diol prepolymer opens new avenues to the synthesis of many new materials, e. g. , polyurethanes.

Original languageEnglish
Pages (from-to)3177-3191
Number of pages15
JournalJournal of polymer science. Part A-1, Polymer chemistry
Volume18
Issue number11
Publication statusPublished - Jan 1 1980

ASJC Scopus subject areas

  • Engineering(all)

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