Synthesis of polypropylene graft copolymers by the combination of a polypropylene copolymer containing pendant vinylbenzene groups and atom transfer radical polymerization

Chengang Cao, Junfeng Zou, Jin Yong Donc, H. U. Youliang, T. C. Chung

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37 Scopus citations

Abstract

This article discusses a facile and inexpensive reaction process for preparing polypropylene-based graft copolymers containing an isotactic polypropylene (i-PP) main chain and several functional polymer side chains. The chemistry involves an i-PP polymer precursor containing several pendant vinylbenzene groups, which is prepared through the Ziegler-Natta copolymerization of propylene and 1,4-divinylbenzene mediated by an isospecific MgCl 2$-supported TiCl 4 catalyst. The selective monoenchainment of 1,4-divinylbenzene comonomers results in pendant vinylbenzene groups quantitatively transformed into benzyl halides by hydrochlorination. In the presence of CuCl/pentamethyldiethylenetriamine, the in situ formed, multifunctional, polymeric atom transfer radical polymerization initiators carry out graft-from polymerization through controlled radical polymerization. Some i-PP-based graft copolymers, including poly(propylene-g-methyl methacrylate) and poly(propylene-g-styrene), have been prepared with controlled compositions.

Original languageEnglish (US)
Pages (from-to)429-437
Number of pages9
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume43
Issue number2
DOIs
StatePublished - Jan 15 2005

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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