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

Mohd Shaiful Zaidi, Mat Desa and Azman, Hasan and Agus, Arsad and Reza, Arjmandi (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). pp. 1-7. ISSN 1097-4628

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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
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Biodegradable; Extrusion; Fullerenes; Graphene; Morphology; Nanotubes; Thermal properties
Subjects: Q Science > QD Chemistry
T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 17 Jun 2019 04:59
Last Modified: 17 Jun 2019 04:59
URI: http://umpir.ump.edu.my/id/eprint/25072
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