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Effect of core–shell rubber toughening on mechanical, thermal, and morphological properties of poly(lactic acid)/multiwalled carbon nanotubes nanocomposites

Mat Desa, Mohd. Shaiful Zaidi and Hassan, Azman and Arsad, Agus and Arjmandi, Reza (2019) Effect of core–shell rubber toughening on mechanical, thermal, and morphological properties of poly(lactic acid)/multiwalled carbon nanotubes nanocomposites. Journal of Applied Polymer Science, 136 (28). p. 47756. ISSN 0021-8995

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Official URL: http://dx.doi.org/10.1002/app.47756

Abstract

The effect of core–shell rubber (CSR) toughening on mechanical and thermal properties of poly(lactic acid)/multiwalled carbon nanotubes (PLA/CNT) nanocomposites were investigated. The nanocomposites were prepared by direct melt blending method in a counter-rotating twin-screw extruder. The contents of CSR were varied between 5 and 20 wt % while the content of CNT was kept at 5 phr. The extruded samples were injection molded into the desired test specimens for mechanical and thermal properties analysis. The impact strength of PLA/CNT increased with increasing CSR content with concomitant decrease in tensile strength and modulus. Interestingly, the flexural strength increased at low CSR content before decreasing at 15 and 20% content. Differential scanning calorimetry analysis on the second heating cycle shows no crystallinity content for PLA/CNT and all CSR toughened PLA/CNT nanocomposites, while thermogravimetric analysis shows lower thermal degradation of all CSR toughened PLA/CNT as compared to PLA/CNT nanocomposite. This study reveals significant correlation between CSR loading with the mechanical and thermal properties of the nanocomposites.

Item Type:Article
Uncontrolled Keywords:morphology, nanotubes
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:88258
Deposited By: Widya Wahid
Deposited On:15 Dec 2020 08:19
Last Modified:15 Dec 2020 08:19

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