The ordering of semi-crystalline PS-b-hPB copolymers at a PS/PE interface and their effects on interfacial strength

H. E. Hermes, D. G. Bucknall, J. S. Higgins, R. L. Scherrenberg

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The organisation and mechanical effectiveness of a series of polystyrene-block-hydrogenated polybutadiene (PS-b-hPB) diblock copolymers (where the hPB block is semicrystalline) when placed as thin layers between the immiscible polymers, polyethylene (PE) and polystyrene (PS), has been explored using neutron reflectivity, transmission electron microscopy and mechanical peel tests. For thin copolymer layers (expected to leave the interface unsaturated) the trend in variation of interfacial strength with copolymer molecular weight was found to be similar to that previously reported for amorphous copolymers. However, for thick layers (oversaturating the interface) the interfacial strength became in one case too large to separate the layers in the peel test. This may suggest a different mechanism for increasing interfacial strength when at least one of the copolymer blocks is crystallisable.

Original languageEnglish
Pages (from-to)3099-3108
Number of pages10
JournalPolymer
Volume39
Issue number14
Publication statusPublished - Jun 1998

Keywords

  • Adhesion
  • Compatibilisation
  • PS/PE interface

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

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