Influence of morphology on the transport properties of polystyrene/polybutadiene blends. 1. Experimental studies

J. E. Sax*, J. M. Ottino

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Experimental and quantitative image analysis studies are presented to investigate the influence of morphology on the transport of small gaseous penetrants (CO2, O2, N2) in randomly interspersed blends of polystyrene (A) and polybutadiene (B) ranging in volume fractions, f{cyrillic}B, from 0.08 to 0.90. The overall transport process, for the blends, appears non-Fickian even though both pure phases A and B exhibit Fickian behaviour. An explanation of this phenomenon, based solely on morphological effects, is presented. A conclusion of the study is that the different methods usually taken as equivalent, to compute the effective diffusion coefficient from sorption data, can give significantly different results. An examination of the morphology is performed by means of digital image analysis on transmission electron microscopy, TEM, micrographs. A significant finding is that, for this system, the maximum intermaterial area density occurs for f{cyrillic}B around 0.15.

Original languageEnglish (US)
Pages (from-to)1073-1080
Number of pages8
JournalPolymer
Volume26
Issue number7
DOIs
StatePublished - Jul 1985

Keywords

  • image analysis
  • morphology
  • polymer blend
  • sorption
  • transport

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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