Effects of silica on the formation of epoxidised natural rubber/polyvinyl chloride membrane

Nazwa Jon, Ibrahim Abdullah, Rizafizah Othaman

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The presence of pores plays an important role for many membrane processes especially in ultrafiltration and microfiltration. Epoxidised natural rubber (ENR)/polyvinyl chloride (PVC) membranes filled with two types of silica fillers were prepared via simultaneous solvent exchange and evaporation of solvent technique. Two types of silica, i.e. microsilica (microcrystalline silica powder) and nanosilica (generated from tetraethoxysilane (TEOS)) were used. The chemical composition, morphology and mechanical stability of the membranes were studied. Both types of silica showed good interaction with the membrane matrix. The formation of pores depended on the size of silica particles added. Microsilica produced large pores while in-situ generated nanosilica produced nanosized pores. The mechanical properties of membrane improved with the addition of silica. The tensile strength increased from 10.6 MPa to 17.8 MPa and 14.5 MPa for nanosilica and microsilica filled membrane while the tensile modulus increased from 1.6 MPa to 3.8 MPa and 3.4 MPa, respectively. Thus, both types of silica acted as a filler as well as pore forming agent for the ENR/PVC membrane.

Original languageEnglish
Pages (from-to)469-473
Number of pages5
JournalSains Malaysiana
Volume42
Issue number4
Publication statusPublished - Apr 2013

Fingerprint

Rubber
Polyvinyl Chloride
Silicon Dioxide
Membranes
Powders
Fillers
Silica fume
Microfiltration
Mechanical stability
Ultrafiltration
Evaporation
Tensile strength
Elastic moduli
Mechanical properties
Chemical analysis

Keywords

  • Epoxidised natural rubber
  • Polyvinyl chloride
  • Pore forming agent
  • Silica
  • Tetraethoxysilane

ASJC Scopus subject areas

  • General

Cite this

Effects of silica on the formation of epoxidised natural rubber/polyvinyl chloride membrane. / Jon, Nazwa; Abdullah, Ibrahim; Othaman, Rizafizah.

In: Sains Malaysiana, Vol. 42, No. 4, 04.2013, p. 469-473.

Research output: Contribution to journalArticle

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