Effect of molecular weight on the properties of liquid epoxidised natural rubber acrylate (LENRAV)/silica hybrid composites

Eda Yuhana Ariffin, Azizan Ahmad, Hj Mohd Dahlan, Mahathir Mohamed

Research output: Contribution to journalArticle

Abstract

This paper reports on the effect of molecular weight on the morphological and mechanical properties of liquid epoxidised natural rubber acrylate (LENRA)/silica hybrid composites prepared by sol-gel technique. The sol-gel reaction was conducted at different concentration of tetraethylorthosilicate (TEOS), used as a precursor of silica. TEOS were introduced in 10, 20, 30, 40 and 50 parts per hundred rubber (phr) in the composites. Two different molecular weights of ENR were used to study the effect of molecular weight on the mechanical and morphological properties of the compounds. These compounds were cured by ultraviolet (UV) irradiation. The mechanical properties were studied through pendulum hardness and scratch tests. Higher molecular weight of ENR showed better mechanical properties than lower molecular weight. Transmission electron microscope was used to determine the silica size and to study the distribution and dispersion of the silica particles. High molecular weight showed greater distribution and dispersion of silica particles with diameter of 13 nm-256 nm. Morphological and mechanical properties of LENRA/silica hybrid composites were improved by using high molecular weight of ENR.

Original languageEnglish
Pages (from-to)743-748
Number of pages6
JournalSains Malaysiana
Volume40
Issue number7
Publication statusPublished - Jul 2011

Fingerprint

rubber
silica
molecular weight
liquids
mechanical properties
gels
transmission electron microscopes
acrylates
hardness
irradiation
testing

Keywords

  • Epoxidised natural rubber
  • Molecular weight
  • Organic-inorganic hybrid
  • Sol-gel technique

ASJC Scopus subject areas

  • General

Cite this

Effect of molecular weight on the properties of liquid epoxidised natural rubber acrylate (LENRAV)/silica hybrid composites. / Ariffin, Eda Yuhana; Ahmad, Azizan; Dahlan, Hj Mohd; Mohamed, Mahathir.

In: Sains Malaysiana, Vol. 40, No. 7, 07.2011, p. 743-748.

Research output: Contribution to journalArticle

Ariffin, Eda Yuhana ; Ahmad, Azizan ; Dahlan, Hj Mohd ; Mohamed, Mahathir. / Effect of molecular weight on the properties of liquid epoxidised natural rubber acrylate (LENRAV)/silica hybrid composites. In: Sains Malaysiana. 2011 ; Vol. 40, No. 7. pp. 743-748.
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