Visualization of the tensile fracture behaviors at adhesive interfaces between brass and sulfur-containing rubber studied by transmission electron microscopy

Katsunori Shimizu, Tomohiro Miyata, Tomohiko Nagao, Akemi Kumagai, Hiroshi Jinnai

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Composites of polymers and inorganic materials have recently attracted considerable attention as lightweight tough materials. In this study, we examined the structures and fracture paths at the adhesive interfaces between a sulfur-containing rubber compound and brass formed during vulcanization. Samples consisting of brass fillers dispersed in a rubber matrix were subjected to in situ tensile observations using transmission electron microscopy. Upon uniaxial stretching, fracture occurred between the rubber compound and outermost CuxS layers of the adhesive interface. With prolonged vulcanization, the adhesive interface became broader and depletion regions of Cu and Zn appeared inside the particles, indicating sample degradation, owing to outward diffusion of the metal elements into the rubber compound. Fracture of the degraded rubber composite occurred along the depletion regions. These observations demonstrate that the adhesiveness of brass and rubber composites strongly depends on the interfacial structures.

Original languageEnglish
Article number121789
JournalPolymer
Volume181
DOIs
Publication statusPublished - 2019 Oct 24

Keywords

  • Adhesive interface
  • Brass
  • In situ tensile deformation experiments
  • Organic–inorganic interface
  • Rubber
  • Tensile fracture
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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