生物可降解山麻杆韧皮纤维增强PBS复合材料的性能研究  

Performance Investigation of PBS Composites Reinforced with Biodegradable Phloem Fiber from Alchornea Davidii Franch

作　　者：赵磊[1,2] 姜为青[1] 刘华[2] 李桂付[2] 周红涛[1,3] ZHAO Lei;JIANG Weiqing;LIU Hua;LI Guifu;ZHOU Hongtao(Textil&Garment Institute,Yancheng Polytechnic College,Yancheng 224005,China;Jiangsu R&D Center of the Ecological Textile Engineering&Technology,Yancheng Polytechnic College,Yancheng 224005,China;Key Laboratory of Eco-Textile of Ministry of Education,Jiangnan University,Wuxi 214122,China)

机构地区：[1]盐城工业职业技术学院纺织服装学院,江苏盐城224005 [2]盐城工业职业技术学院,江苏省生态纺织工程技术研发中心,江苏盐城224005 [3]江南大学生态纺织教育部重点实验室,江苏无锡214122

出　　处：《中国塑料》2019年第12期73-79,共7页China Plastics

基　　金：2017年江苏高校“青蓝工程”资助项目(苏教师[2017]15号);2017年江苏省高校优秀中青年教师和校长境外研修计划项目(314);2019年盐城工业职业技术学院优秀科技创新团队(YGYKT-03)

摘　　要：以山麻杆韧皮纤维为增强体,其与PBS颗粒按质量比20∶80模压成型制备了4种板材,探讨了表面处理对纤维微观结构与物理性能的影响,分析比较了板材力学性能及生物降解性。结果表明,采用物理化学相结合方法预处理后,表面依然存留一定量的果胶等物质;预处理纤维进一步碱处理后表面出现“S”形凹槽,预处理纤维进一步偶联剂处理后表面凹槽连续性好、深度深;碱处理、偶联剂处理后纤维拉伸强度分别提高5.08%和降低3.58%;相比纯PBS,偶联剂处理后纤维复合材料拉伸强度与弯曲强度各提高48.32%和25.97%,拉伸模量与弯曲模量各提高146.45%和128.30%;3种纤维复合材料生物可降解性变化趋势一致,但偶联剂处理后的材料失重率变化幅度最小。The phloem fiber obtained from alchornea davidii franch(PF-ADF)was prepared by a physicochemical combination method and then treated with alkali and a coupling agent(A-151).Three types of biodegradable PBS composites reinforced with PF-ADF were prepared at the PBS/fiber weight ratio of 80/20.The effect of surface treatment on the microstructure and physical properties of the fibers as well as the mechanical properties of the composites were investigated.The results indicated that most of the non-cellulosic substances like pectin were removed from the surface of PF-ADF after treatment.The surface of PF-ADF exhibited some“S”shape grooves after treated with alkali,and however the grooves on the surface of PF-ADF treated with the coupling agent showed a good continuity and a large depth.The PF-ADF achieved an increase in tensile strength by 5.08% but a decrease by 3.58% after treatment with alkali and coupling agent,respectively.Compared to pure PBS,the composites gained an increase in tensile modulus by 48.32%and in bending strength by 25.97%.Moreover,their tensile and bending moduli were improved by 146.45% and 128.3%,respectively.The three types of the composites exhibited a similar trend in biodegradation,and the composite with the surface-treated PF-ADF showed a smaller weight-loss rate compared to the other two composites.

关 键 词：山麻杆 韧皮纤维 表面处理 力学性能 生物降解性 

分 类 号：TQ321[化学工程—合成树脂塑料工业]