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In relation to this article, we declare that there is no conflict of interest.
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Received September 8, 2021
Accepted November 10, 2021
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Thermal and mechanical properties of poly(latic acid) reinforced with silanized basalt scales

Department of Polymer Materials, Jilin Institute of Chemical Technology, Jilin City 132022, P. R. China 1Jilin Jinshi New Material Technology Co., Ltd., No.67 Jianxin Road, Jilin Economic and Technological Development Zone, Jilin City 132101, P. R. China, Korea 2Department of Chemistry, Inha University, Michuhol-gu, Incheon 22212, Korea
jinfanlong@163.com
Korean Journal of Chemical Engineering, July 2022, 39(7), 1952-1958(7), 10.1007/s11814-021-1014-y
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Abstract

Biodegradable poly(lactic acid) (PLA)-based composites were prepared using PLA and basalt scale (BS) via a solution-blending method. BS surfaces were treated using a silane coupling agent, and their surface properties were characterized by high-resolution scanning electron microscopy, energy-dispersive X-ray spectrometry, and X-ray photoelectron spectrometry. Moreover, the influence of BS content on the thermal properties, flexural properties, impact strength, and morphology of the PLA/silane-coupling-agent-treated BS (KH-BS) composites was analyzed. The thermal stability of the composites significantly increased due to the addition of KH-BS. Impact strength tests showed that the impact strength of the PLA/KH-BS composite with 4 wt% KH-BS was 3.14 kJ/m2, which is 51% higher than that of pristine PLA (2.07 kJ/m2). The analysis of the fracture surfaces of the composites after the impact strength tests revealed a rough morphology with numerous river-like micro-cracks. The study results demonstrate that the addition of KH-BS significantly improves the thermal stability and impact strength of PLA/KH-BS composites.

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