环氧大豆油化学接枝聚乳酸的制备及其性能

doi:10.11901/1005.3093.2020.490

材料研究学报

2022, Vol. 36

Issue (1): 73-80 DOI: 10.11901/1005.3093.2020.490

研究论文

本期目录 | 过刊浏览

环氧大豆油化学接枝聚乳酸的制备及其性能

蔡垚¹, 吴红枚¹(

), 刘武², 李端¹, 范诗易¹, 王洋洋¹

^1.南华大学化学化工学院衡阳 421000
^2.东莞市汇林新材料科技有限公司东莞 523000

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

引用本文:

蔡垚, 吴红枚, 刘武, 李端, 范诗易, 王洋洋. 环氧大豆油化学接枝聚乳酸的制备及其性能[J]. 材料研究学报, 2022, 36(1): 73-80.
Yao CAI, Hongmei WU, Wu LIU, Duan LI, Shiyi FAN, Yangyang WANG. Preparation and Properties of Polylactic Acid Chemically Grafted with Epoxidized Soybean Oil[J]. Chinese Journal of Materials Research, 2022, 36(1): 73-80.

全文: PDF(3391 KB) HTML

摘要:

用化学改性方式将环氧大豆油(ESO)与用马来酸酐(MAH)改性过的PLA接枝(MPLA)，制备了反应性增容剂ECP并提出其可能的接枝机理。用FT-IR、DSC、SEM等手段表征ECP，研究了制备ECP时4种加料方式和ESO与MAH基团的摩尔比对其接枝率和酸值的影响。结果表明：在MPLA阶段先加入1/3配方比的ESO，在化学接枝阶段加入剩余的ESO和全部的三乙胺，制备出的ECP接枝率最高达4.1514%；ESO与MAH基团的摩尔比为1时产物的接枝效果最好。ECP改性的PLA材料其综合性能优于ESO改性的PLA材料，ECP的加入使PLA的疏水性能提高。

关键词 ：复合材料, 化学接枝, 改性, 环氧大豆油

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.

Key words： composite chemical grafting modification epoxidized soybean oil

收稿日期: 2020-11-17

ZTFLH:

TQ317

基金资助:国家自然科学基金(21104031);湖南省2020年度教育厅科学研究项目(20C1589)

作者简介: 蔡垚，女，1996年生，硕士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2020.490 或 https://www.cjmr.org/CN/Y2022/V36/I1/73

表1 MPLA母料配方表

表2 ECP产品配方表

图1 样品的红外光谱

表3 样品的热性能

图2 样品的DSC曲线

表4 样品的酸值和接枝率

图3 各样品的扫描电镜图

图4 Neat PLA、PLA/ESO和PLA/ECP的综合性能

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