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Effect of carbon-based nanoparticles on the cure characteristics and network structure of styrene-butadiene rubber vulcanizate

Saatchi, M. M ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1002/pi.4132
  3. Publisher: 2012
  4. Abstract:
  5. The network structure of styrene-butadiene rubber (SBR) in the presence of carbon black (CB) with two different structures and multi-walled carbon nanotubes (MWCNTs) was investigated. Swelling behaviour, tensile properties at various strain rates and cure kinetics were characterized. Experimental data were analysed using the Flory-Rehner model as well as the tube model theory. It is found that the network structure of CB-filled SBR follows a three-phase composite model including rigid particles, semi-rigid bound rubber and matrix rubber. This bound rubber is postulated to be critical for the mechanical and deformational properties, development of crosslinking density in matrix rubber and polymer-filler interaction. For MWCNT-filled SBR, the bound rubber does not show a substantial contribution to the network structure and mechanical performance, and these properties are greatly dominated by the higher aspect ratio and polymer-filler interaction. Additionally it is deduced that the crosslinking density of matrix rubber increases on incorporation of the fillers compared to unfilled matrix rubber
  6. Keywords:
  7. Carbon nanotubes ; Superconductive carbon black ; Bound rubber ; Carbon-based ; Cross-linking density ; Cure characteristics ; Cure kinetics ; Curing properties ; Different structure ; Experimental data ; Flory-Rehner ; Mechanical performance ; Network structures ; Polymer-filler- Interaction ; Rigid particles ; Semi-rigid ; Styrene-butadiene rubber ; Swelling behaviour ; Three-phase composites ; Tube model ; Aspect ratio ; Carbon black ; Carbon nanotubes ; Curing ; Fillers ; Mechanical properties ; Nanocomposites ; Rigid structures ; Rubber ; Tubes (components) ; Filled polymers
  8. Source: Polymer International ; Volume 61, Issue 4 , 2012 , Pages 664-672 ; 09598103 (ISSN)
  9. URL: http://onlinelibrary.wiley.com/doi/10.1002/pi.4132/abstract;jsessionid=13503FFBDD4AF491E62258D939814926.f04t03