Effect of chemical surface treatment on the mechanical properties of reinforced plasticized poly(lactic acid) biodegradable composites

Biodegradable composites were prepared by melt-blending technique using 30 wt% kenaf bast fiber (KBF) to reinforce 70 wt% plasticized poly(lactic acid) (PLA). The KBF was treated with various percentages of sodium hydroxide (NaOH), whereas 5% triacetin was used as plasticizer. The effects of the K...

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Main Authors:	Ibrahim, Nor Azowa, Wan Yunus, Wan Md Zin, Othman, Maizatulnisa, Abdan, Khalina
Format:	Article
Language:	English English English
Published:	SAGE Publications 2011
Subjects:	TP1080 Polymers, plastics and their manufacture
Online Access:	http://irep.iium.edu.my/52070/ http://irep.iium.edu.my/52070/ http://irep.iium.edu.my/52070/ http://irep.iium.edu.my/52070/1/15.pdf http://irep.iium.edu.my/52070/7/52070-Effect%20of%20chemical%20surface%20treatment%20on%20the%20mechanical%20properties%20of%20reinforced%20plasticized%20poly-SCOPUS.pdf http://irep.iium.edu.my/52070/8/52070-Effect%20of%20chemical%20surface%20treatment%20on%20the%20mechanical%20properties%20of%20reinforced%20plasticized%20poly-WOS.pdf

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spelling	iium-520702016-10-04T02:01:01Z http://irep.iium.edu.my/52070/ Effect of chemical surface treatment on the mechanical properties of reinforced plasticized poly(lactic acid) biodegradable composites Ibrahim, Nor Azowa Wan Yunus, Wan Md Zin Othman, Maizatulnisa Abdan, Khalina TP1080 Polymers, plastics and their manufacture Biodegradable composites were prepared by melt-blending technique using 30 wt% kenaf bast fiber (KBF) to reinforce 70 wt% plasticized poly(lactic acid) (PLA). The KBF was treated with various percentages of sodium hydroxide (NaOH), whereas 5% triacetin was used as plasticizer. The effects of the KBF surface treatments on the tensile, flexural, impact strength, and DMA of the biocomposites were investigated. Tensile, flexural, and impact testing results reveal that 4% of NaOH-treated KBF produced composites with optimum tensile strength (62 MPa), flexural strength (67 MPa), and the impact strength (42 kJ/m2 ). The removal of the lignin from the fiber during the surface treatment caused the increment in the modulus result. This finding is also supported by the dynamic mechanical analysis. The storage modulus of plasticized PLA/treated KBF is higher than the storage modulus of plasticized PLA/untreated KBF which is attributed to the enhancement of the fiber–matrix adhesion. The loss modulus results showed that the Tg of the plasticized composites was shifting to higher temperature, from 55°C for plasticized PLA/untreated KBF to 65°C for plasticized PLA/treated KBF. The increase in Tg shows that the plasticized PLA has low chain mobility when reinforced with treated KBF, indicating better interaction. SAGE Publications 2011-03 Article PeerReviewed application/pdf en http://irep.iium.edu.my/52070/1/15.pdf application/pdf en http://irep.iium.edu.my/52070/7/52070-Effect%20of%20chemical%20surface%20treatment%20on%20the%20mechanical%20properties%20of%20reinforced%20plasticized%20poly-SCOPUS.pdf application/pdf en http://irep.iium.edu.my/52070/8/52070-Effect%20of%20chemical%20surface%20treatment%20on%20the%20mechanical%20properties%20of%20reinforced%20plasticized%20poly-WOS.pdf Ibrahim, Nor Azowa and Wan Yunus, Wan Md Zin and Othman, Maizatulnisa and Abdan, Khalina (2011) Effect of chemical surface treatment on the mechanical properties of reinforced plasticized poly(lactic acid) biodegradable composites. Journal of Reinforced Plastics & Composite, 30 (5). pp. 381-388. ISSN 0731-6844 E-ISSN 1530-7964 http://jrp.sagepub.com/content/30/5/381.abstract 10.1177/0731684410396595
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English English
topic	TP1080 Polymers, plastics and their manufacture
spellingShingle	TP1080 Polymers, plastics and their manufacture Ibrahim, Nor Azowa Wan Yunus, Wan Md Zin Othman, Maizatulnisa Abdan, Khalina Effect of chemical surface treatment on the mechanical properties of reinforced plasticized poly(lactic acid) biodegradable composites
description	Biodegradable composites were prepared by melt-blending technique using 30 wt% kenaf bast fiber (KBF) to reinforce 70 wt% plasticized poly(lactic acid) (PLA). The KBF was treated with various percentages of sodium hydroxide (NaOH), whereas 5% triacetin was used as plasticizer. The effects of the KBF surface treatments on the tensile, flexural, impact strength, and DMA of the biocomposites were investigated. Tensile, flexural, and impact testing results reveal that 4% of NaOH-treated KBF produced composites with optimum tensile strength (62 MPa), flexural strength (67 MPa), and the impact strength (42 kJ/m2 ). The removal of the lignin from the fiber during the surface treatment caused the increment in the modulus result. This finding is also supported by the dynamic mechanical analysis. The storage modulus of plasticized PLA/treated KBF is higher than the storage modulus of plasticized PLA/untreated KBF which is attributed to the enhancement of the fiber–matrix adhesion. The loss modulus results showed that the Tg of the plasticized composites was shifting to higher temperature, from 55°C for plasticized PLA/untreated KBF to 65°C for plasticized PLA/treated KBF. The increase in Tg shows that the plasticized PLA has low chain mobility when reinforced with treated KBF, indicating better interaction.
format	Article
author	Ibrahim, Nor Azowa Wan Yunus, Wan Md Zin Othman, Maizatulnisa Abdan, Khalina
author_facet	Ibrahim, Nor Azowa Wan Yunus, Wan Md Zin Othman, Maizatulnisa Abdan, Khalina
author_sort	Ibrahim, Nor Azowa
title	Effect of chemical surface treatment on the mechanical properties of reinforced plasticized poly(lactic acid) biodegradable composites
title_short	Effect of chemical surface treatment on the mechanical properties of reinforced plasticized poly(lactic acid) biodegradable composites
title_full	Effect of chemical surface treatment on the mechanical properties of reinforced plasticized poly(lactic acid) biodegradable composites
title_fullStr	Effect of chemical surface treatment on the mechanical properties of reinforced plasticized poly(lactic acid) biodegradable composites
title_full_unstemmed	Effect of chemical surface treatment on the mechanical properties of reinforced plasticized poly(lactic acid) biodegradable composites
title_sort	effect of chemical surface treatment on the mechanical properties of reinforced plasticized poly(lactic acid) biodegradable composites
publisher	SAGE Publications
publishDate	2011
url	http://irep.iium.edu.my/52070/ http://irep.iium.edu.my/52070/ http://irep.iium.edu.my/52070/ http://irep.iium.edu.my/52070/1/15.pdf http://irep.iium.edu.my/52070/7/52070-Effect%20of%20chemical%20surface%20treatment%20on%20the%20mechanical%20properties%20of%20reinforced%20plasticized%20poly-SCOPUS.pdf http://irep.iium.edu.my/52070/8/52070-Effect%20of%20chemical%20surface%20treatment%20on%20the%20mechanical%20properties%20of%20reinforced%20plasticized%20poly-WOS.pdf
first_indexed	2023-09-18T21:13:50Z
last_indexed	2023-09-18T21:13:50Z
_version_	1777411430445744128

Effect of chemical surface treatment on the mechanical properties of reinforced plasticized poly(lactic acid) biodegradable composites

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