Influence of solvent and drop distance on the formation of ENR/PVC/silica aerogel beads

N. A. Abdullah, I. Abdullah, Rizafizah Othaman

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The influence of solvent properties and drop distance were investigated in the preparation of silica-filled epoxidised natural rubber/polyvinyl chloride (ENR/PVC) aerogel beads. The formation of these composite beads was done by dropping polymer solution into a solidifying solution via phase inversion/solvent exchange. The beads were collected and finally dried at 80°C in ambient pressure. FTIR spectroscopy, optical microscopy, and scanning electron microscopy (SEM) were carried out to characterise the samples. Infrared spectroscopy analysis of the composite showed the presence of Si-O-Si and Si-OH bonds as well as hydrogen bonding between organic and inorganic components which enhance compatibility between them. The morphological studies showed a high homogeneity of silica dispersion within the ENR/PVC matrix. Solidifying solution of the 50% v/v water/ethanol was found to be suitable for formation of spherical droplets of ENR/PVC/silica due to the polarity and surface tension of the solution. The height of dropping was also found to have significantly affected the formation of beads by which 20 cm was determined to be the optimum height. Under the established conditions, the mean diameter of the spherical beads was in the range of 2.0-2.5 mm.

Original languageEnglish
Pages (from-to)269-280
Number of pages12
JournalInternational Journal of Materials Engineering Innovation
Volume4
Issue number3-4
DOIs
Publication statusPublished - 2013

Fingerprint

Aerogels
Rubber
Polyvinyl Chloride
Polyvinyl chlorides
Silicon Dioxide
Silica
Composite materials
Polymer solutions
Optical microscopy
Surface tension
Infrared spectroscopy
Ion exchange
Hydrogen bonds
Ethanol
Spectroscopy
Scanning
Scanning electron microscopy
Water

Keywords

  • Aerogel
  • Aerogel beads
  • Beads formation
  • Drop distance
  • ENR
  • ENR/PVC/silica
  • Epoxidised natural rubber
  • Morphology
  • Polyvinyl chloride
  • PVC
  • Silica
  • Solvent

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Influence of solvent and drop distance on the formation of ENR/PVC/silica aerogel beads. / Abdullah, N. A.; Abdullah, I.; Othaman, Rizafizah.

In: International Journal of Materials Engineering Innovation, Vol. 4, No. 3-4, 2013, p. 269-280.

Research output: Contribution to journalArticle

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