Effects of alkali and simultaneous ultrasound-alkali treatments on the performances of oil pump empty fruit bunch fibers reinforced poly lactic acid composites

Md. Forhad M., . and Abu Kashem M. M .A., . and Mohammad Dalour H. B., . and Rosli M. Y., . (2014) Effects of alkali and simultaneous ultrasound-alkali treatments on the performances of oil pump empty fruit bunch fibers reinforced poly lactic acid composites. [Proceedings Paper]

Biocomposites of raw oil palm empty fruit bunch EFB alkali treated EFB AEFB and simultaneous ultrasound-alkali treated EFB UAEFB fibers with polylactic acid PLA were fabricated by extrusion followed by the injection molding technique. The optimum fiber-treatment parameters such as alkali solution concentration soaking time and treatment temperature were found to be 3 wt 90 min and 80C for UAEFB fibers and 5 wt 60 min and 100C for AEFB fibers respectively. Then the performances of raw EFB fibers PLA optimized AEFB fibers-PLA and optimized UAEFB fibers-PLA composites REPC OAEPC and OUAEPC were characterized and compared. Tensile strength TS and tensile modulus TM of OUAEPC increase by 20 and 30 and TS and TM of OAEPC increase by 24 and 39 from those of REPC showing a significant enhancement of mechanical properties by the simultaneous ultrasound-alkali treatment as compared to the only alkali treatment of the fibers. Crystallization in PLA has been enhanced by UAEFB fibers more than AEFB fibers. Improved interaction between fiber and matrix accompanied by treated fibers has been demonstrated by Fourier transform infrared spectroscopy. Activation energy as analyzed from the TGA data indicates more thermal stability of OUAEPC than OAEPC and REPC.

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Abstract

Biocomposites of raw oil palm empty fruit bunch EFB alkali treated EFB AEFB and simultaneous ultrasound-alkali treated EFB UAEFB fibers with polylactic acid PLA were fabricated by extrusion followed by the injection molding technique. The optimum fiber-treatment parameters such as alkali solution concentration soaking time and treatment temperature were found to be 3 wt 90 min and 80C for UAEFB fibers and 5 wt 60 min and 100C for AEFB fibers respectively. Then the performances of raw EFB fibers PLA optimized AEFB fibers-PLA and optimized UAEFB fibers-PLA composites REPC OAEPC and OUAEPC were characterized and compared. Tensile strength TS and tensile modulus TM of OUAEPC increase by 20 and 30 and TS and TM of OAEPC increase by 24 and 39 from those of REPC showing a significant enhancement of mechanical properties by the simultaneous ultrasound-alkali treatment as compared to the only alkali treatment of the fibers. Crystallization in PLA has been enhanced by UAEFB fibers more than AEFB fibers. Improved interaction between fiber and matrix accompanied by treated fibers has been demonstrated by Fourier transform infrared spectroscopy. Activation energy as analyzed from the TGA data indicates more thermal stability of OUAEPC than OAEPC and REPC.

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. TP339 B615 Call Number
AGROVOC Term:	Oil palm
AGROVOC Term:	Alkali soils
AGROVOC Term:	Lactic acid
AGROVOC Term:	Fibers
AGROVOC Term:	Mechanical properties
AGROVOC Term:	Crystallization
AGROVOC Term:	Wastes
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/12120

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