Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Natural Rubber Blends

In this work, we report a melt blend of poly(lactic acid)(PLA)/epoxidized natural rubber (ENR) with liquid natural rubber (LNR). The LNR was synthesized by a photochemical degradation technique and used as a compatibilizer in the PLA/rubber binary blending systems. The PLA/ENR/LNR blends were melt-b...

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Main Authors:	Akhtar, Muhammad Nadeem, Sahrim, Ahmad, Rozaidi, Rasid
Format:	Article
Published:	SAGE Publications 2014
Subjects:	TP Chemical technology QD Chemistry
Online Access:	http://umpir.ump.edu.my/id/eprint/8034/ http://umpir.ump.edu.my/id/eprint/8034/ http://umpir.ump.edu.my/id/eprint/8034/

id	ump-8034
recordtype	eprints
spelling	ump-80342018-04-18T04:10:10Z http://umpir.ump.edu.my/id/eprint/8034/ Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Natural Rubber Blends Akhtar, Muhammad Nadeem Sahrim, Ahmad Rozaidi, Rasid TP Chemical technology QD Chemistry In this work, we report a melt blend of poly(lactic acid)(PLA)/epoxidized natural rubber (ENR) with liquid natural rubber (LNR). The LNR was synthesized by a photochemical degradation technique and used as a compatibilizer in the PLA/rubber binary blending systems. The PLA/ENR/LNR blends were melt-blended in a Haake internal mixer at 180C and mixing speed of 50 r. min 1 for 15 min. It was found that the addition of LNR compatibilizer has improved the tensile strength and elongation at break for the compositions of the 40PLA/55ENR/5LNR blend system when compared with a noncompatibilized system (40PLA/55ENR/5NR). The elongation at break for the blend with 5% LNR compatibilizer showed a twofold increment compared with the blend without LNR. The increase in tensile strength and elongation at break were associated with the ability of LNR to promote the uniform dispersion between the natural rubber (NR) and PLA phases as observed in the scanning electron microscopic analysis. Moreover, the differential scanning calorimetric results indicated that the 40PLA/55ENR/5LNR showed the highest degree of crystallinity and thus contributed to improve their mechanical properties. Thermogravimetric analysis showed that two degradation transitions for both compatibilized and noncompatibilized blend systems due to higher degradation temperatures of ENR50 and NR parts. Fourier transform infrared spectroscopic analysis revealed that the PLA/ENR/NR and PLA/ENR/LNR blends were not miscible. SAGE Publications 2014 Article PeerReviewed Akhtar, Muhammad Nadeem and Sahrim, Ahmad and Rozaidi, Rasid (2014) Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Natural Rubber Blends. Journal of Elastomers & Plastics, 46 (4). pp. 338-354. ISSN 0095-2443 (print); 1530-8006 (online) http://dx.doi.org/10.1177/0095244312468442 DOI: 10.1177/0095244312468442
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
topic	TP Chemical technology QD Chemistry
spellingShingle	TP Chemical technology QD Chemistry Akhtar, Muhammad Nadeem Sahrim, Ahmad Rozaidi, Rasid Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Natural Rubber Blends
description	In this work, we report a melt blend of poly(lactic acid)(PLA)/epoxidized natural rubber (ENR) with liquid natural rubber (LNR). The LNR was synthesized by a photochemical degradation technique and used as a compatibilizer in the PLA/rubber binary blending systems. The PLA/ENR/LNR blends were melt-blended in a Haake internal mixer at 180C and mixing speed of 50 r. min 1 for 15 min. It was found that the addition of LNR compatibilizer has improved the tensile strength and elongation at break for the compositions of the 40PLA/55ENR/5LNR blend system when compared with a noncompatibilized system (40PLA/55ENR/5NR). The elongation at break for the blend with 5% LNR compatibilizer showed a twofold increment compared with the blend without LNR. The increase in tensile strength and elongation at break were associated with the ability of LNR to promote the uniform dispersion between the natural rubber (NR) and PLA phases as observed in the scanning electron microscopic analysis. Moreover, the differential scanning calorimetric results indicated that the 40PLA/55ENR/5LNR showed the highest degree of crystallinity and thus contributed to improve their mechanical properties. Thermogravimetric analysis showed that two degradation transitions for both compatibilized and noncompatibilized blend systems due to higher degradation temperatures of ENR50 and NR parts. Fourier transform infrared spectroscopic analysis revealed that the PLA/ENR/NR and PLA/ENR/LNR blends were not miscible.
format	Article
author	Akhtar, Muhammad Nadeem Sahrim, Ahmad Rozaidi, Rasid
author_facet	Akhtar, Muhammad Nadeem Sahrim, Ahmad Rozaidi, Rasid
author_sort	Akhtar, Muhammad Nadeem
title	Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Natural Rubber Blends
title_short	Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Natural Rubber Blends
title_full	Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Natural Rubber Blends
title_fullStr	Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Natural Rubber Blends
title_full_unstemmed	Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Natural Rubber Blends
title_sort	mechanical, thermal and morphological properties of poly(lactic acid)/epoxidized natural rubber blends
publisher	SAGE Publications
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/8034/ http://umpir.ump.edu.my/id/eprint/8034/ http://umpir.ump.edu.my/id/eprint/8034/
first_indexed	2023-09-18T22:05:17Z
last_indexed	2023-09-18T22:05:17Z
_version_	1777414667121983488

Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Natural Rubber Blends

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