Optimization of hot pressing process for unidirectional kenaf polypropylene composites by full factorial design

Dulina Tholibon, Abu Bakar Sulong, Norhamidi Muhamad, Nur Farhani Ismail, Izdihar Tharazi, Mohd Khairul Fadzly Md Radzi

Research output: Contribution to journalArticle

Abstract

In recent years, the use of kenaf fibers as a reinforcement agent in the composite preparation has grown rapidly due to increasing requirement for developing sustainable materials. In this research, unidirectional kenaf polypropylene (PP) composites were prepared using the hot pressing method. However, there has been insufficient research in fabricating the unidirectional kenaf/PP composites that focus on optimum parameter's settings for hot pressing process. Therefore, a study of the optimization process emphasizing on temperature, pressure, time and percentage of kenaf fibers on the tensile properties was conducted with a two-level full factorial design. In addition, the effects of the individual factors and their interaction were also observed. The result showed that the main factor that affects the high-performance of tensile strength, and modulus were due to the kenaf percentage with 21.67% contribution. While, the interaction of kenaf percentage and pressing time influenced 13.26% contribution on the composite properties. Concluding that at temperature 190°C, pressure 5MPa, with 5 minutes pressing time and 50% fiber content will enable optimum tensile strength and young modulus which is 163.12 MPa and 11.17 GPa respectively. Therefore, this also ensures an improvement of 486% tensile strength compared to pure PP.

Original languageEnglish
Pages (from-to)23-35
Number of pages13
JournalJournal of Mechanical Engineering
VolumeSI 3
Issue number2
Publication statusPublished - 1 Jan 2017

Fingerprint

Hot pressing
Polypropylenes
Kenaf fibers
Tensile strength
Composite materials
Elastic moduli
Tensile properties
Reinforcement
Temperature
Fibers

Keywords

  • Mechanical properties
  • Natural fiber
  • Optimization process
  • Thermoplastic
  • Unidirectional

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Optimization of hot pressing process for unidirectional kenaf polypropylene composites by full factorial design. / Tholibon, Dulina; Sulong, Abu Bakar; Muhamad, Norhamidi; Ismail, Nur Farhani; Tharazi, Izdihar; Md Radzi, Mohd Khairul Fadzly.

In: Journal of Mechanical Engineering, Vol. SI 3, No. 2, 01.01.2017, p. 23-35.

Research output: Contribution to journalArticle

Tholibon, Dulina ; Sulong, Abu Bakar ; Muhamad, Norhamidi ; Ismail, Nur Farhani ; Tharazi, Izdihar ; Md Radzi, Mohd Khairul Fadzly. / Optimization of hot pressing process for unidirectional kenaf polypropylene composites by full factorial design. In: Journal of Mechanical Engineering. 2017 ; Vol. SI 3, No. 2. pp. 23-35.
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