Preparation of polymers with controlled architecture. Synthesis and polymerization of hyperbranched macromonomers

C. J. Hawker*, K. L. Wooley, R. Lee, Jean Frechet

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations

Abstract

One of the major methods for controlling molecular architecture is by changing the number and location of branches through the formation of graft and star polymers. The synthesis of novel copolymers from macromonomers is a major field of study and has received increased recognition during the last decade. The anion generated from the 'focal point' hydroxymethyl group was used in the displacement of chloride ion from commercially available 4-chloromethyl styrene. A sterically non-demanding model compound was prepared in a similar way from benzyl alcohol, the products were easily purified by flash chromatography. Several novel copolymers were prepared by copolymerization of the macromonomers with styrene under free radical conditions (AIBN, 70°C). The copolymers were purified by precipitation into mixtures of isopropanol and acetone. The compositions of the purified copolymers were determined by 1 H NMR spectroscopy.

Original languageEnglish (US)
Pages (from-to)73-74
Number of pages2
JournalPolymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Materials Science and Engineering
Volume64
StatePublished - Jan 1 1991
EventProceedings of the American Chemical Society, Spring Meeting - Atlanta, GA, USA
Duration: Apr 15 1991Apr 19 1991

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics

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