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Epoxidized natural rubber toughened polylactic acid/talc composites: mechanical, thermal, and morphological properties

The aim of present study is to develop a toughened polylactic acid/talc composite. Talc and epoxidized natural rubber (ENR-50) were compounded with polylactic acid using counter-rotating twin-screw extruder followed by preparation of samples through injection molding. The effect of silane-treated ta...

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Main Authors: Akbari, Abozar, Jawaid, M., Hassan, Azman, Balakrishnan, Harintharavimal
Format: Article
Published: Sage Journals 2014
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/52726/
http://dx.doi.org/10.1177/0021998313477461
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spelling my.utm.527262018-06-30T00:24:04Z http://eprints.utm.my/id/eprint/52726/ Epoxidized natural rubber toughened polylactic acid/talc composites: mechanical, thermal, and morphological properties Akbari, Abozar Jawaid, M. Hassan, Azman Balakrishnan, Harintharavimal TP Chemical technology The aim of present study is to develop a toughened polylactic acid/talc composite. Talc and epoxidized natural rubber (ENR-50) were compounded with polylactic acid using counter-rotating twin-screw extruder followed by preparation of samples through injection molding. The effect of silane-treated talc and epoxidized natural rubber on mechanical, thermal, and morphological properties of polylactic acid was investigated. The Young′s and flexural modulus of polylactic acid improved while the impact strength values dropped with increasing talc content (20–30 wt%) indicating that talc increased the stiffness of polylactic acid with a sacrifice in toughness. Subsequently, the blending of epoxidized natural rubber (20 wt%) to polylactic acid/talc (30 wt%) revealed that the impact strength of polylactic acid/talc composites improved 448% with considerable drop in Young’s and flexural modulus. Polylactic acid/talc/epoxidized natural rubber composite contains 60% polylactic acid, 30 wt% talc, and 10 wt% ENR display optimum stiffness and impact strength. Scanning electron micrographs demonstrates that talc agglomerates at higher loadings. Thermogravimetric anlaysis indicated that thermal stability of polylactic acid/talc composite was reduced by the addition of epoxidized natural rubber due to increasing talc agglomeration. Sage Journals 2014 Article PeerReviewed Akbari, Abozar and Jawaid, M. and Hassan, Azman and Balakrishnan, Harintharavimal (2014) Epoxidized natural rubber toughened polylactic acid/talc composites: mechanical, thermal, and morphological properties. Journal of Composite Materials, 48 (7). pp. 769-781. ISSN 1530-793X http://dx.doi.org/10.1177/0021998313477461 DOI: 10.1177/0021998313477461
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Akbari, Abozar
Jawaid, M.
Hassan, Azman
Balakrishnan, Harintharavimal
Epoxidized natural rubber toughened polylactic acid/talc composites: mechanical, thermal, and morphological properties
description The aim of present study is to develop a toughened polylactic acid/talc composite. Talc and epoxidized natural rubber (ENR-50) were compounded with polylactic acid using counter-rotating twin-screw extruder followed by preparation of samples through injection molding. The effect of silane-treated talc and epoxidized natural rubber on mechanical, thermal, and morphological properties of polylactic acid was investigated. The Young′s and flexural modulus of polylactic acid improved while the impact strength values dropped with increasing talc content (20–30 wt%) indicating that talc increased the stiffness of polylactic acid with a sacrifice in toughness. Subsequently, the blending of epoxidized natural rubber (20 wt%) to polylactic acid/talc (30 wt%) revealed that the impact strength of polylactic acid/talc composites improved 448% with considerable drop in Young’s and flexural modulus. Polylactic acid/talc/epoxidized natural rubber composite contains 60% polylactic acid, 30 wt% talc, and 10 wt% ENR display optimum stiffness and impact strength. Scanning electron micrographs demonstrates that talc agglomerates at higher loadings. Thermogravimetric anlaysis indicated that thermal stability of polylactic acid/talc composite was reduced by the addition of epoxidized natural rubber due to increasing talc agglomeration.
format Article
author Akbari, Abozar
Jawaid, M.
Hassan, Azman
Balakrishnan, Harintharavimal
author_facet Akbari, Abozar
Jawaid, M.
Hassan, Azman
Balakrishnan, Harintharavimal
author_sort Akbari, Abozar
title Epoxidized natural rubber toughened polylactic acid/talc composites: mechanical, thermal, and morphological properties
title_short Epoxidized natural rubber toughened polylactic acid/talc composites: mechanical, thermal, and morphological properties
title_full Epoxidized natural rubber toughened polylactic acid/talc composites: mechanical, thermal, and morphological properties
title_fullStr Epoxidized natural rubber toughened polylactic acid/talc composites: mechanical, thermal, and morphological properties
title_full_unstemmed Epoxidized natural rubber toughened polylactic acid/talc composites: mechanical, thermal, and morphological properties
title_sort epoxidized natural rubber toughened polylactic acid/talc composites: mechanical, thermal, and morphological properties
publisher Sage Journals
publishDate 2014
url http://eprints.utm.my/id/eprint/52726/
http://dx.doi.org/10.1177/0021998313477461
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score 13.211869

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