Interfacial compatibilization via in-situ polymerization of epoxidized soybean oil for bamboo fibers reinforced poly(lactic acid) biocomposites
Interfacial compatibilization via in-situ polymerization of epoxidized soybean oil for bamboo fibers reinforced poly(lactic acid) biocomposites
复制标题
通过环氧化大豆油原位聚合实现竹纤维增强聚乳酸生物复合材料的界面相容性
DOI：
10.1016/j.compositesa.2020.106066
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发表时间：
2020-11-01
影响因子：
8.7
通讯作者：
Liu, Wendi
中科院分区：
文献类型：
--
作者：
Chen, Tingting;Wu, Yuchao;Liu, Wendi
提出了一种简单、有效、环境友好的方法来改善竹纤维增强聚乳酸生物复合材料的界面粘结性能。生物基单体，即，采用环氧大豆油（ESO）原位聚合法在BF/PLA基体界面形成ESO聚合界面层。FTIR和XPS分析证实，聚（ESO）层与BF和PLA基体共价键合，导致BF/PLA生物复合材料的界面粘合增强。柔性聚（ESO）层有助于同时增强和增韧效果的生物复合材料，因此显着增加的拉伸强度，拉伸模量，断裂伸长率，和储能模量的生物复合材料。然而，由于ESO的掺入，生物复合材料的玻璃化转变温度、熔融温度和冷却结晶温度略有降低。
A simple, efficient and eco-friendly method was developed for improving the interfacial adhesion of bamboo fibers (BFs) reinforced poly(lactic acid) (PLA) biocomposites. A biobased monomer, i.e., epoxidized soybean oil (ESO), was used to in-situ polymerize at the interface between BFs and PLA matrix for forming a polymerized ESO interfacial layer. FTIR and XPS analyses confirmed that the poly(ESO) layer was covalently bonded with both BFs and PLA matrix, resulting in an enhanced interfacial adhesion of the BF/PLA biocomposites. The flexible poly(ESO) layer contributed to a simultaneous strengthening and toughening effect on the biocomposites, hence significantly increased the tensile strength, tensile modulus, fracture elongation, and storage modulus of the biocomposites. However, the glass transition temperatures, melting temperatures, and cooling crystallization temperatures of the biocomposites were slightly decreased due to the incorporation of ESO.