Effects of epoxidized natural rubber as a compatibilizer in melt compounded natural rubber-organoclay nanocomposites

P. L. Teh, Z. A Mohd Ishak, A. S. Hashim, J. Karger-Kocsis, U. S. Ishiaku

Research output: Contribution to journalArticle

205 Citations (Scopus)

Abstract

Nanocomposites containing natural rubber (NR) as matrix, epoxidized natural rubber (ENR) as compatibilizer and organophilic layered clay (organoclay) as filler were produced in an internal mixer and cured using a conventional sulphuric system. The effects of ENR with 25 (ENR 25) and 50 mol% epoxidation (ENR 50), respectively, were compared at 5 and 10 parts per hundred rubber (phr) concentrations. The organoclay content was fixed at 2 phr. Cure characteristics, clay dispersion, (thermo)mechanical properties of the nanocomposites were determined and discussed. Incorporation of ENR and organoclay strongly affected the parameters which could be derived from Monsanto MDR measurements. Faster cure and increased crosslink density were attributed to changes in the activation/crosslinking pathway which was, however, not studied in detail. The organoclay was mostly intercalated according to X-ray diffraction (XRD) and transmission electron microscopic (TEM) results. The best clay dispersion was achieved by adding ENR 50. This was reflected in the stiffness of the nanocomposites derived from both dynamic mechanical thermal analysis (DMTA) and tensile tests. The tensile and tear strengths of the ENR 50 containing nanocomposites were also superior to the ENR 25 compatibilized and uncompatibilized stocks.

Original languageEnglish
Pages (from-to)2513-2521
Number of pages9
JournalEuropean Polymer Journal
Volume40
Issue number11
DOIs
Publication statusPublished - Nov 2004

Fingerprint

Organoclay
Compatibilizers
Rubber
rubber
Nanocomposites
nanocomposites
clays
Clay
epoxidation
Epoxidation
crosslinking
tensile tests
fillers
Crosslinking
tensile strength
Thermoanalysis
Fillers
stiffness
thermal analysis
Chemical activation

Keywords

  • Compatibilizer
  • Epoxidized natural rubber (ENR)
  • Nanocomposites
  • Natural rubber (NR)
  • Organoclay

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

Cite this

Effects of epoxidized natural rubber as a compatibilizer in melt compounded natural rubber-organoclay nanocomposites. / Teh, P. L.; Ishak, Z. A Mohd; Hashim, A. S.; Karger-Kocsis, J.; Ishiaku, U. S.

In: European Polymer Journal, Vol. 40, No. 11, 11.2004, p. 2513-2521.

Research output: Contribution to journalArticle

Teh, P. L. ; Ishak, Z. A Mohd ; Hashim, A. S. ; Karger-Kocsis, J. ; Ishiaku, U. S. / Effects of epoxidized natural rubber as a compatibilizer in melt compounded natural rubber-organoclay nanocomposites. In: European Polymer Journal. 2004 ; Vol. 40, No. 11. pp. 2513-2521.
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