Rheological and thermodynamical behavior of styrene/butadiene rubber-organoclay nanocomposites

Research output: Contribution to journalArticle

214 Citations (Scopus)

Abstract

Full Paper: Organophilic layered silicate (montmorillonite type) was added up to 10 phr to a styrene/butadiene rubber (SBR) cured by an effecient vulcanization system. The compounds were characterized in respect to their curing, rheological and mechanical properties. In addition, attempt was made to consider some thermodynamical aspects of some resulting network. The crosslink density, assessed by the Flory-Rehner equation, increased with increasing organoclay content. This was traced to the accelator role of the amine functionality of the triakyl amine intercalant used. The pronouced structural viscosity (i.e. viscosity decrease as a function of shear rate) and high elongation at break of the compounds caused by the incorporation of organoclay were compounds caused by the incorporation of organoclay were opposed to the enhanced crosslinking and reinforcing effect of the clay supposed to be exfoliated. To solve the above contradiction a model was proposed according to which the silicate layers are intercalated/exfoliated and encapsulated by a highly crosslinked rubber layer and these "rubberized" platelets are embedded in the lightly crosslinked bulk.

Original languageEnglish
Pages (from-to)260-266
Number of pages7
JournalMacromolecular Materials and Engineering
Volume286
Issue number4
DOIs
Publication statusPublished - Apr 30 2001

Fingerprint

Organoclay
Butadiene
Styrene
Silicates
Nanocomposites
Rubber
Amines
Viscosity
Bentonite
Vulcanization
Platelets
Clay minerals
Crosslinking
Shear deformation
Curing
Elongation
Clay
Mechanical properties
styrene-butadiene rubber

ASJC Scopus subject areas

  • Materials Science(all)
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Rheological and thermodynamical behavior of styrene/butadiene rubber-organoclay nanocomposites. / Mousa, A.; Karger-Kocsis, J.

In: Macromolecular Materials and Engineering, Vol. 286, No. 4, 30.04.2001, p. 260-266.

Research output: Contribution to journalArticle

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