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Role of morphology and coupling agent in fracture performance of glass-filled polypropylene

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1002/pc.750090509
AuthorSearch for: 1; Search for: 1
Affiliation
  1. National Research Council Canada
FormatText, Article
Abstract
The effect of silane coupling agent on the morphology and fracture performance of particulates‐filled polypropylene was investigated. The onset of the crystallization at the filler‐matrix interface was observed by optical microscopy. This analysis shows that the silane alters the matrix morphology by inducing nucleation at the filler‐matrix interface. This effect was attributed to the physisorbed layer of silane on the filler. The fracture performance of the composites was analyzed by the post yield fracture mechanics approach. The effect of coupling agent on the fracture performance was found to occur at a very low concentration, whereas subsequent increase in silane concentration had no effect. Furthermore, the effect of coupling agent depended on concentration of filler. Silane treatment had a detrimental effect at low concentration of filler. However, at high concentration of filler, an improvement in the filler‐matrix adhesion had a beneficial effect on the fracture performance. Two phenomena, the morphological effect and the competition between the contribution of the matrix‐filler interface and the contribution of the matrix, were found to be possible explanations for the variation of KRmax with filler concentration and adhesion at the matrix‐filler interface.
Publication date
PublisherWiley
In
  • Polymer Composites 9, no. 5: 360–367.
LanguageEnglish
Peer reviewedYes
NRC numberNRCC 28152
NRC-IGM87AP-103-614-G
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Record identifier0cf24fbf-a734-4bd8-907b-c1af0f3dc776
Record created2020-04-21
Record modified2020-05-08
Date modified: