Effects of epoxidized natural rubber (ENR-50) and processing parameters on the properties of NR/EPDM blends using response surface methodology

Noraiham Mohamad, Juliana Yaakub, Jeefferie Abd Razak, Mohd Yuhazri Yaakob, Mohammed Iqbal Shueb, Andanastuti Muchtar

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The effects of epoxidized natural rubber (ENR-50) and processing parameters on the properties of natural rubber/ethylene-propylene-diene rubber (NR/EPDM; 70: 30 phr) blends were studied. The compounds were prepared by melt compounding method. Using response surface methodology of two-level full factorial, the effects of ENR-50 contents (-1: 5 phr; +1: 10 phr), mixing temperature (-1: 50°C; +1: 110°C), rotor speed (-1: 40 rpm; +1: 80 rpm), and mixing time (-1: 5 min; +1: 9 min) in NR/EPDM blends were evaluated. Cure characteristics and tensile properties were selected as the responses. The significance of factors and its interaction was analyzed using ANOVA and the model's ability to represent the system was confirmed using the constant of determination, R 2 with values above 0.90. It was found that the presence of ENR-50 has the predominant role on the properties of NR/EPDM blends. The addition of ENR-50 significantly improved cure characteristics and tensile strength up to 5.12% and 6.48% compared to neat NR/EPDM blends, respectively. These findings were further supported by swell measurement, differential scanning calorimetry, and scanning electron microscopy. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40713.

Original languageEnglish
Pages (from-to)8777-8784
Number of pages8
JournalJournal of Applied Polymer Science
Volume131
Issue number17
DOIs
Publication statusPublished - 5 Aug 2014

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Rubber
Processing
Analysis of variance (ANOVA)
Tensile properties
Propylene
Differential scanning calorimetry
Ethylene
Tensile strength
Rotors
Scanning electron microscopy
Temperature

Keywords

  • compatibilization
  • crosslinking
  • differential scanning calorimetry
  • elastomers
  • morphology

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Surfaces, Coatings and Films
  • Chemistry(all)

Cite this

Effects of epoxidized natural rubber (ENR-50) and processing parameters on the properties of NR/EPDM blends using response surface methodology. / Mohamad, Noraiham; Yaakub, Juliana; Abd Razak, Jeefferie; Yaakob, Mohd Yuhazri; Shueb, Mohammed Iqbal; Muchtar, Andanastuti.

In: Journal of Applied Polymer Science, Vol. 131, No. 17, 05.08.2014, p. 8777-8784.

Research output: Contribution to journalArticle

Mohamad, Noraiham ; Yaakub, Juliana ; Abd Razak, Jeefferie ; Yaakob, Mohd Yuhazri ; Shueb, Mohammed Iqbal ; Muchtar, Andanastuti. / Effects of epoxidized natural rubber (ENR-50) and processing parameters on the properties of NR/EPDM blends using response surface methodology. In: Journal of Applied Polymer Science. 2014 ; Vol. 131, No. 17. pp. 8777-8784.
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