Mechanical properties and environmental stress cracking resistance of rubber toughened polyester/kenaf composite

N. N. Bonnia, Sahrim Ahmad, I. Zainol, A. A. Mamun, M. D H Beg, A. K. Bledzki

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

In this study rubber-toughened polyester-kenaf fibre composites were prepared by adding various percentages of kenaf fibre in unsaturated polyester resin and subsequently cross linked using a mixture of organic peroxide methyl ethyl ketone and cobalt octanoate. Three percent (3%) of liquid natural rubber (LNR) were added as a toughening agent. The mechanical properties of the composites were evaluated by impact and flexural testing. Environmental stress cracking resistance (ESCR) of polyester-kenaf composite in acid and base medium was also studied. It was found that the addition of LNR increased impact strength by about 66% and flexural strength by 70%. Measurement of ESCR shows that the composite has the fastest diffusion rate in acid medium, followed by that in base medium and then without medium. Bonding mechanisms were assessed by scanning electron microscope and FTIR analysis.

Original languageEnglish
Pages (from-to)55-61
Number of pages7
JournalExpress Polymer Letters
Volume4
Issue number2
DOIs
Publication statusPublished - Feb 2010

Fingerprint

Polyesters
Rubber
polyesters
rubber
Kenaf fibers
mechanical properties
Mechanical properties
composite materials
Composite materials
organic peroxides
polyester resins
impact strength
acids
Polyester resins
Acids
fiber composites
flexural strength
Toughening
Liquids
Impact strength

Keywords

  • Kenaf
  • Liquid natural rubber (LNR)
  • Polyester
  • Polymer composites
  • Toughened

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry
  • Chemical Engineering(all)
  • Organic Chemistry
  • Physical and Theoretical Chemistry

Cite this

Mechanical properties and environmental stress cracking resistance of rubber toughened polyester/kenaf composite. / Bonnia, N. N.; Ahmad, Sahrim; Zainol, I.; Mamun, A. A.; Beg, M. D H; Bledzki, A. K.

In: Express Polymer Letters, Vol. 4, No. 2, 02.2010, p. 55-61.

Research output: Contribution to journalArticle

Bonnia, N. N. ; Ahmad, Sahrim ; Zainol, I. ; Mamun, A. A. ; Beg, M. D H ; Bledzki, A. K. / Mechanical properties and environmental stress cracking resistance of rubber toughened polyester/kenaf composite. In: Express Polymer Letters. 2010 ; Vol. 4, No. 2. pp. 55-61.
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