冷等离子体改性聚乳酸纤维/热塑性淀粉复合材料的研究

doi:10.19936/j.cnki.2096-8000.20230728.006

复合材料科学与工程 ›› 2023, Vol. 0 ›› Issue (7): 44-49.DOI: 10.19936/j.cnki.2096-8000.20230728.006

冷等离子体改性聚乳酸纤维/热塑性淀粉复合材料的研究

陈英烜, 马辉煌, 孙铭, 杨少霞, 陈剑佩, 周晓东^*

华东理工大学上海市多相结构材料化学工程重点实验室, 上海 200237

收稿日期:2022-05-31 发布日期:2023-08-22
通讯作者: 周晓东(1969—),男,博士生导师,教授,主要从事热塑性聚合物复合材料的制备与成型技术、多相多组分聚合物材料界面设计与控制、生物资源高分子材料高性能化和实用化技术等方面的研究,xdzhou@ecust.edu.cn。
作者简介:陈英烜(1995—),男,硕士研究生,主要从事淀粉可降解复合材料方面的研究。

Research on cold plasma modified PLA fiber/TPS composites

CHEN Yingxuan, MA Huihuang, SUN Ming, YANG Shaoxia, CHEN Jianpei, ZHOU Xiaodong^*

Shanghai Key Laboratory of Chemical Engineering for Multiphase Structural Materials, East China University of Science and Technology, Shanghai 200237, China

Received:2022-05-31 Published:2023-08-22

摘要/Abstract

摘要： 为提高聚乳酸纤维(PLAF)与热塑性淀粉(TPS)的界面相容性并以此改善复合材料的力学性能,通过冷等离子体对PLAF进行改性处理。采用转矩流变仪制备TPS,利用模压成型制备了PLAF/TPS复合材料。探究了不同功率冷等离子体、不同纤维长度、不同纤维含量对复合材料力学性能的影响。结果表明:冷等离子体改性处理功率越高,PLAF制备的复合材料拉伸强度、弯曲强度越高,但对复合材料的冲击强度几乎无影响;纤维含量及长度的变化对拉伸性能、弯曲强度、冲击强度变化趋势的影响不同,当纤维长度为10 mm,纤维含量为20%时,纤维的综合力学性能较为良好,此时拉伸强度为16.15 MPa,弯曲强度为56.12 MPa,冲击强度为5.54 kJ/m²。

关键词: 聚乳酸纤维, 可生物降解, 复合材料, 热塑性淀粉, 力学性能

Abstract: To improve the mechanical properties of composites by improving the interfacial compatibility between polylactic acid fibers (PLAF) and thermoplastic starch (TPS), the PLAF was modified by cold plasma. And the TPS was prepared by torque rheometer, and PLAF/TPS composite was prepared by compression molding. The effects of different power cold plasma, different fiber lengths, and different fiber contents on the mechanical properties of composites were explored. The results showed that the higher the power of the cold plasma modification treatment, the higher the tensile strength and flexural strength of the composites prepared by the modified PLA fibers, but had little effect on the impact properties of the composites. When the fiber length was 10 mm, the fiber content was at 20%, the comprehensive mechanical properties of the fiber are relatively good: the tensile strength was 16.15 MPa, the bending strength was 56.12 MPa, and the impact strength was 5.54 kJ/m².

Key words: polylactic acid fiber, biodegradable, composite, thermoplastic starch, mechanical property

中图分类号:

TB332

陈英烜, 马辉煌, 孙铭, 杨少霞, 陈剑佩, 周晓东. 冷等离子体改性聚乳酸纤维/热塑性淀粉复合材料的研究[J]. 复合材料科学与工程, 2023, 0(7): 44-49.

CHEN Yingxuan, MA Huihuang, SUN Ming, YANG Shaoxia, CHEN Jianpei, ZHOU Xiaodong. Research on cold plasma modified PLA fiber/TPS composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(7): 44-49.

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冷等离子体改性聚乳酸纤维/热塑性淀粉复合材料的研究

Research on cold plasma modified PLA fiber/TPS composites

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