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| Preparation and Properties of Polylactic Acid Chemically Grafted with Epoxidized Soybean Oil |
CAI Yao1, WU Hongmei1( ), LIU Wu2, LI Duan1, FAN Shiyi1, WANG Yangyang1 |
1.College of Chemistry and Chemical Engineering, University of South China, Hengyang 421000, China
2.Dongguan Huilin New Material Technology Co. Ltd. , Dongguan 523000, China |
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Cite this article:
CAI Yao, WU Hongmei, LIU Wu, LI Duan, FAN Shiyi, WANG Yangyang. Preparation and Properties of Polylactic Acid Chemically Grafted with Epoxidized Soybean Oil. Chinese Journal of Materials Research, 2022, 36(1): 73-80.
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Abstract Maleic anhydride (MAH) grafted polylactic acid (PLA), namely MPLA was made via melting reaction method. Then reactive compatilizer ESO-G-(MAH-co-PLA) (ECP) was further prepared via chemical graft of epoxidized soybean oil (ESO) and MPLA.The prepared ECP was characterized by FT-IR, DSC and SEM. The influence of four different feeding methods and mole ratio between ESO and MAH on graft rate and acid value of ECP was investigated. The results show that during the MPLA preparation stage, 1/3 of the desired amount ESO was added first, and subsequently the remaining 2/3 of ESO and all triethylamine were added at the chemical graft stage, as a result the grafting rate of ECP was up to 4.1514%；When the mole ratio of ESO to MAH group is 1, the grafting effect of products is the best. The PLA material modified with ECP has better comprehensive performance than the one with ESO. The addition of ECP can improve the hydrophobic performance of PLA.
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Received: 17 November 2020
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| Fund: National Natural Science Foundation of China(21104031);Education Department of Hunan Province in 2020(20C1589) |
About author: WU Hongmei, Tel: 13875636309, E-mail: wuhongmei2016@163.com
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