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Fabrication of PLA/COW dung-based biocomposite

Various environmental drawbacks such as reduction in land fill space and nonbiodegradability lead to systematically investigate the replacing of synthetic composites by using biocomposites. Biocomposites possess suitable characterizations such as light weight, combustible, nontoxic, and biodegradabi...

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Main Author: Yusefi, Mostafa
Format: Thesis
Language:English
Published: 2015
Subjects:
Composite materials - Testing
Green technology
Animal waste - Management
Online Access:http://psasir.upm.edu.my/id/eprint/56661/1/FK%202015%2033.pdf
http://psasir.upm.edu.my/id/eprint/56661/
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spelling my.upm.eprints.566612024-10-21T08:07:38Z http://psasir.upm.edu.my/id/eprint/56661/ Fabrication of PLA/COW dung-based biocomposite Yusefi, Mostafa Various environmental drawbacks such as reduction in land fill space and nonbiodegradability lead to systematically investigate the replacing of synthetic composites by using biocomposites. Biocomposites possess suitable characterizations such as light weight, combustible, nontoxic, and biodegradability behavior. However, the final product of the biocomposites carries certain drawbacks in terms of mechanical, physical and thermal properties. In order to determine their characteristic, this research aided to figure out the possibility of applying cow dung (CD) as filler to prepare polylactic acid (PLA) biocomposite. The main objective of this research is to obtain a suitable composition ratio based on the filler and the hosting polymer. The CD of two different sizes, namely 4.00 mm and 0.5 mm were blended with PLA. PLA/CD biocomposites with different CD ratios (0-60 wt.%) were fabricated using an internal Brabender mixer (W50EHT-3zones) followed by a 40 tones hydraulic compression moulding. The results showed that the addition of CD led to improve flexural properties compared to tensile and impact strength. Biocomposites with 4.00 mm CD (bigger filler) mainly showed higher mechanical properties than those of 0.5 mm CD (smaller filler). Scanning electron microscopy (SEM) of tensile and impact fractured surfaces indicated that the bigger fillers had stronger adhesion and bonding with the matrix. Moreover, the cavities and rough surface of biocomposites increased with the filler content addition. This led to lower mechanical and physical properties of the biocomposites and increased water uptake during water absorption test accordingly. Dynamic mechanical analysis (DMA) technique was also followed to determine both storage and loss modulus of the samples. Neat PLA indicted the lowest storage modulus, while the filler content addition generally improved the storage modulus. Results of hermogravimetric analysis (TGA) indicated that the addition of the filler content prolonged the major degradation temperature. This was due to the higher resistance of the CD filler to the degradation temperature, which induced higher thermal stability of CD compared to the neat PLA. 2015-12 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/56661/1/FK%202015%2033.pdf Yusefi, Mostafa (2015) Fabrication of PLA/COW dung-based biocomposite. Masters thesis, Universiti Putra Malaysia. Composite materials - Testing Green technology Animal waste - Management
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
topic Composite materials - Testing
Green technology
Animal waste - Management
spellingShingle Composite materials - Testing
Green technology
Animal waste - Management
Yusefi, Mostafa
Fabrication of PLA/COW dung-based biocomposite
description Various environmental drawbacks such as reduction in land fill space and nonbiodegradability lead to systematically investigate the replacing of synthetic composites by using biocomposites. Biocomposites possess suitable characterizations such as light weight, combustible, nontoxic, and biodegradability behavior. However, the final product of the biocomposites carries certain drawbacks in terms of mechanical, physical and thermal properties. In order to determine their characteristic, this research aided to figure out the possibility of applying cow dung (CD) as filler to prepare polylactic acid (PLA) biocomposite. The main objective of this research is to obtain a suitable composition ratio based on the filler and the hosting polymer. The CD of two different sizes, namely 4.00 mm and 0.5 mm were blended with PLA. PLA/CD biocomposites with different CD ratios (0-60 wt.%) were fabricated using an internal Brabender mixer (W50EHT-3zones) followed by a 40 tones hydraulic compression moulding. The results showed that the addition of CD led to improve flexural properties compared to tensile and impact strength. Biocomposites with 4.00 mm CD (bigger filler) mainly showed higher mechanical properties than those of 0.5 mm CD (smaller filler). Scanning electron microscopy (SEM) of tensile and impact fractured surfaces indicated that the bigger fillers had stronger adhesion and bonding with the matrix. Moreover, the cavities and rough surface of biocomposites increased with the filler content addition. This led to lower mechanical and physical properties of the biocomposites and increased water uptake during water absorption test accordingly. Dynamic mechanical analysis (DMA) technique was also followed to determine both storage and loss modulus of the samples. Neat PLA indicted the lowest storage modulus, while the filler content addition generally improved the storage modulus. Results of hermogravimetric analysis (TGA) indicated that the addition of the filler content prolonged the major degradation temperature. This was due to the higher resistance of the CD filler to the degradation temperature, which induced higher thermal stability of CD compared to the neat PLA.
format Thesis
author Yusefi, Mostafa
author_facet Yusefi, Mostafa
author_sort Yusefi, Mostafa
title Fabrication of PLA/COW dung-based biocomposite
title_short Fabrication of PLA/COW dung-based biocomposite
title_full Fabrication of PLA/COW dung-based biocomposite
title_fullStr Fabrication of PLA/COW dung-based biocomposite
title_full_unstemmed Fabrication of PLA/COW dung-based biocomposite
title_sort fabrication of pla/cow dung-based biocomposite
publishDate 2015
url http://psasir.upm.edu.my/id/eprint/56661/1/FK%202015%2033.pdf
http://psasir.upm.edu.my/id/eprint/56661/
_version_ 1814054582784884736
score 13.211869

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