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Preparation and characterisation of aggregating comblike poly(propylene oxide)

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Author

Summary, in English

Poly(propylene oxide)s with a comblike architecture were prepared by using an ethylene-vinyl alcohol copolymer as a macroinitiator for anionic graft polymerisation of propylene oxide. The densely grafted polymers were subsequently modified by capping the terminal hydroxyl groups with hexadecanoyl chloride to produce aggregating polymers. Dilute solution viscometry showed that the hydroxyl and hexadecanoyl content of the uncapped and capped polymers, respectively, largely determined their state of aggregation in methanol and toluene. Thermal analysis of the uncapped polymers in the solid state showed a decrease in glass transition temperature with increasing average molecular weight of the grafts. Analysis of the capped polymers revealed crystallisation and melting of the hexadecanoyl chain ends in connection with the glass transition of the poly(propylene oxide) phase. It is conceivable that in the solid state the comblike poly(propylene oxide) chains were interconnected by 'micellar-like' microdomains formed by the hexadecanoyl chain ends.

Publishing year

2000

Language

English

Pages

6701-6707

Publication/Series

Polymer

Volume

41

Issue

18

Document type

Journal article

Publisher

Elsevier

Topic

  • Chemical Sciences

Keywords

  • Graft copolymerisation
  • Comb polymers
  • Propylene oxide

Status

Published

ISBN/ISSN/Other

  • ISSN: 0032-3861