Effect Of Fiber Surface Treatment On Mechanical And Thermal Properties Of Polylactic Acid-Kenaf Fiber Composite

In the present study, the effect of fiber surface treatment on mechanical and thermal properties of Polylactic acid/kenaf fiber composite manufactured by single screw extruder followed by injection moulding were investigated. The alkali treatment was done by treating the kenaf fiber with 5 % NaOH so...

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Main Author: Chai, Poi Seng
Format: Monograph
Language:English
Published: Universiti Sains Malaysia 2017
Subjects:
Online Access:http://eprints.usm.my/52447/1/Effect%20Of%20Fiber%20Surface%20Treatment%20On%20Mechanical%20And%20Thermal%20Properties%20Of%20Polylactic%20Acid-Kenaf%20Fiber%20Composite_Chai%20Poi%20Seng_B1_2017.pdf
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author Chai, Poi Seng
author_facet Chai, Poi Seng
author_sort Chai, Poi Seng
collection USM
description In the present study, the effect of fiber surface treatment on mechanical and thermal properties of Polylactic acid/kenaf fiber composite manufactured by single screw extruder followed by injection moulding were investigated. The alkali treatment was done by treating the kenaf fiber with 5 % NaOH solution for 2 h while silane treatment was done by soaking fiber in 5 wt% of silane coupling agent which was dissolved in a mixture of water – ethanol (40:60 w/w) for 3 h. The influence of fiber treatment on chemical and morphological properties of kenaf fiber was investigated with Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscope (SEM). It was found that alkali treatment effectively removed surface impurities and non-cellulosic materials such as hemicellulose and lignin while silane treatment did not show a significant effect on these properties. Mechanical properties of PLA/kenaf fiber composite were investigated with tensile and impact test, while the thermal properties measurement was carried out using Thermogravimetric Analysis (TGA), and Differential Scanning Calorimetry (DSC). The alkali treatment was found to improve both mechanical and thermal properties of PLA/kenaf fiber composite as compared to untreated fiber composite which appears to be due to the removal of hemicellulose and lignin roughen the fiber surface, led to increase in interfacial adhesion via mechanical interlocking. The mechanical and thermal properties of silane treated fiber composite were increased further due to enhanced interfacial adhesion by chemical bonding which is stronger than mechanical interlocking.
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spelling usm.eprints-524472022-04-29T03:33:54Z http://eprints.usm.my/52447/ Effect Of Fiber Surface Treatment On Mechanical And Thermal Properties Of Polylactic Acid-Kenaf Fiber Composite Chai, Poi Seng T Technology TA401-492 Materials of engineering and construction. Mechanics of materials In the present study, the effect of fiber surface treatment on mechanical and thermal properties of Polylactic acid/kenaf fiber composite manufactured by single screw extruder followed by injection moulding were investigated. The alkali treatment was done by treating the kenaf fiber with 5 % NaOH solution for 2 h while silane treatment was done by soaking fiber in 5 wt% of silane coupling agent which was dissolved in a mixture of water – ethanol (40:60 w/w) for 3 h. The influence of fiber treatment on chemical and morphological properties of kenaf fiber was investigated with Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscope (SEM). It was found that alkali treatment effectively removed surface impurities and non-cellulosic materials such as hemicellulose and lignin while silane treatment did not show a significant effect on these properties. Mechanical properties of PLA/kenaf fiber composite were investigated with tensile and impact test, while the thermal properties measurement was carried out using Thermogravimetric Analysis (TGA), and Differential Scanning Calorimetry (DSC). The alkali treatment was found to improve both mechanical and thermal properties of PLA/kenaf fiber composite as compared to untreated fiber composite which appears to be due to the removal of hemicellulose and lignin roughen the fiber surface, led to increase in interfacial adhesion via mechanical interlocking. The mechanical and thermal properties of silane treated fiber composite were increased further due to enhanced interfacial adhesion by chemical bonding which is stronger than mechanical interlocking. Universiti Sains Malaysia 2017-06-01 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/52447/1/Effect%20Of%20Fiber%20Surface%20Treatment%20On%20Mechanical%20And%20Thermal%20Properties%20Of%20Polylactic%20Acid-Kenaf%20Fiber%20Composite_Chai%20Poi%20Seng_B1_2017.pdf Chai, Poi Seng (2017) Effect Of Fiber Surface Treatment On Mechanical And Thermal Properties Of Polylactic Acid-Kenaf Fiber Composite. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Bahan Sumber Mineral. (Submitted)
spellingShingle T Technology
TA401-492 Materials of engineering and construction. Mechanics of materials
Chai, Poi Seng
Effect Of Fiber Surface Treatment On Mechanical And Thermal Properties Of Polylactic Acid-Kenaf Fiber Composite
title Effect Of Fiber Surface Treatment On Mechanical And Thermal Properties Of Polylactic Acid-Kenaf Fiber Composite
title_full Effect Of Fiber Surface Treatment On Mechanical And Thermal Properties Of Polylactic Acid-Kenaf Fiber Composite
title_fullStr Effect Of Fiber Surface Treatment On Mechanical And Thermal Properties Of Polylactic Acid-Kenaf Fiber Composite
title_full_unstemmed Effect Of Fiber Surface Treatment On Mechanical And Thermal Properties Of Polylactic Acid-Kenaf Fiber Composite
title_short Effect Of Fiber Surface Treatment On Mechanical And Thermal Properties Of Polylactic Acid-Kenaf Fiber Composite
title_sort effect of fiber surface treatment on mechanical and thermal properties of polylactic acid kenaf fiber composite
topic T Technology
TA401-492 Materials of engineering and construction. Mechanics of materials
url http://eprints.usm.my/52447/1/Effect%20Of%20Fiber%20Surface%20Treatment%20On%20Mechanical%20And%20Thermal%20Properties%20Of%20Polylactic%20Acid-Kenaf%20Fiber%20Composite_Chai%20Poi%20Seng_B1_2017.pdf
work_keys_str_mv AT chaipoiseng effectoffibersurfacetreatmentonmechanicalandthermalpropertiesofpolylacticacidkenaffibercomposite