设为首页 联系我们 加入收藏

当前位置: 网站首页 期刊分类目录 2025第1期 正文

生物降解弹性体粒子/氧化石墨烯纳米复合体系改性聚乳酸

作者:时间:2025-03-05点击数:


全文下载: 20250108.pdf


文章编号: 1672-6987(2025)01-0095-07 DOI: 10.16351/j.1672-6987.2025.01.013

焦贵宾, 黎永轩, 杨德敬, 王庆国*(青岛科技大学 高分子科学与工程学院;橡塑材料与工程教育部重点实验室,山东 青岛 266042)

摘要: 首先制备了羧基封端生物降解聚酯弹性体粒子( CBEP)和氧化石墨烯(GO)片层彼此呈隔离依附状态的CBEP/GO纳米复合粉末,然后将CBEP/GO纳米复合粉末与聚乳酸(PLA)熔融共混,借助CBEP粒子在PLA基体中的良好分散性,将吸附在CBEP粒子表面的GO片层均匀分散在PLA基体中,制备出PLA/CBEP/GO三元纳米复合材料。分析结果表明:GO能够良好分散在PLA基体中;与纯PLA相比,PLA/CBEP/GO三元纳米复合材料的断裂伸长率由纯PLA的4.6%提高至71.0%,且PLA/CBEP/GO三元纳米复合材料的缺口冲击强度提高到纯PLA的1.64倍,同时提高了PLA的热稳定性能和PLA的导电与导热性能。CBEP/GO纳米复合粉末在PLA基体中起到异相成核剂的作用,提高PLA的结晶性能,缩短了PLA的结晶时间。


关键词: 聚乳酸; 纳米复合材料; 氧化石墨烯; 生物降解性


中图分类号: TB 332; TQ 323.4        文献标志码: A


引用格式: 焦贵宾, 黎永轩, 杨德敬, .生物降解弹性体粒子/氧化石墨烯纳米复合体系改性聚乳酸[J].青岛科技大学学报(自然科学版), 2025, 46(1): -.


JIAO Guibin,LI Yongxuan,YANG Dejing,et al.Poly(lactic acid) nanocomposites modified by biodegradable elastomer particles/graphene oxide nanocompound[J].Journal of Qingdao University of Science and Technology(Natural Science Edition), 2025, 46(1): -.

Poly(lactic acid)Nanocomposites Modified by Biodegradable Elastomer Particles/Graphene Oxide Nanocompound

JIAO Guibin, LI Yongxuan, YANG Dejing, WANG Qingguo(College of Polymer Science and Engineering; Key Laboratory of Rubber-Plastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao 266042, China)

Abstract: In this paper, carboxyl-terminated biodegradable polyester elastomer particles (CBEP)/graphene oxide (GO) nanocomposite powders in which CBEP particles and GO sheet layers were isolated from each other was prepared, then the CBEP/GO nanocomposite powder was melted and blended with polylactic acid (PLA).With the help of the good dispersion of CBEP particles in the PLA matrix, the GO sheet layer adsorbed on the surface of the CBEP particles was uniformly dispersed in the PLA matrix, and the PLA/CBEP/GO ternary nanocomposites was fabricated. The results show that GO can be well dispersed in the PLA matrix. Elongation at break of PLA/CBEP/GO ternary nanocomposites is increased from 4.6% of pure PLA to 71.0%, and the notched impact strength of PLA/CBEP/GO ternary nanocomposites is 1.64 times that of pure PLA. Meanwhile,thermal stability, conductivity and thermal conductivity of PLA/CBEP/GO ternary nanocomposites are improved compared with those of pure PLA. The CBEP/GO nanocomposite powder also plays the role of heterogeneous nucleating agent in the PLA matrix, improving the crystallization performance of PLA, and shortening the crystallization time of PLA. Research of the PLA/CBEP/GO ternary nanocomposites is expected to broaden the application of PLA in biomedicine, environmental protection materials, electronic appliances and related special fields.


Key words: polylactic acid; nanocomposite; graphene oxide; biodegradation


收稿日期: 2023-12-31

基金项目: 国家自然科学基金项目(51773104;51373085);山东省重点研发项目(2017GGX20138).

作者简介: 焦贵宾(1996—),男,硕士研究生.     * 通信联系人.


Copyright © 2011-2017 青岛科技大学学报 (自然科学版)