| MAH改性方法对淀粉/聚乳酸界面相容性的影响 |
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| 引用本文： | 左迎峰,吴义强,顾继友,佘佳荣,郭鑫,江萍.MAH改性方法对淀粉/聚乳酸界面相容性的影响[J].材料导报,2017,31(16):41-45. |
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| 作者姓名： | 左迎峰 吴义强 顾继友 佘佳荣 郭鑫 江萍 |
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| 作者单位： | 1. 中南林业科技大学材料科学与工程学院,长沙,410004;2. 东北林业大学生物质材料科学与技术教育部重点实验室,哈尔滨,150040 |
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| 基金项目： | 生物质材料科学与技术教育部重点实验室(东北林业大学)开放基金(SWZCL2016-04)；湖南省教育厅科学研究项目(15C1428)； 湖南省科技创新平台与人才计划项目(2016RS2010；2016TP1013) 左迎峰:1986年生,博士,博士后,讲师,主要从事生物质复合材料及胶黏剂改性研究 E-mail:zuoyf1986@163.com 吴义强:通讯作者,1967年生,教授,博士研究生导师,主要从事木材科学、竹材工业化利用与生物质材料研究 E-mail:wuyq0506@126.com |
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| 摘 要： | 以玉米淀粉和聚乳酸(PLA)为原料,马来酸酐(MAH)为改性剂,通过熔融挤出法制备淀粉/PLA复合材料。研究了MAH分别作为增容剂和淀粉酯化剂这两种改性方法对淀粉/PLA相容性的影响,并对复合材料的熔融加工性能、力学性能和耐水性能进行了测试。X射线衍射(XRD)、扫描电子显微镜(SEM)和热重分析(TGA)结果都证明,MAH与原淀粉先进行干法酯化改性再与PLA复配制得酯化淀粉/PLA复合材料,比MAH作为增容剂直接添加制得原淀粉/MAH/PLA复合材料具有更好的界面相容性。受界面相容性提高程度的影响,酯化淀粉/PLA复合材料的熔融加工性能、拉伸强度、弯曲强度、断裂伸长率和耐水性能都优于原淀粉/MAH/PLA复合材料。
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| 关 键 词： | 干法酯化淀粉 马来酸酐 聚乳酸 界面相容性 |
Effect of MAH Modifying Method on the Interfacial Compatibility of Starch/Polylactic Acid |
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| ZUO Yingfeng,WU Yiqiang,GU Jiyou,SHE Jiarong,GUO Xin and JIANG Ping.Effect of MAH Modifying Method on the Interfacial Compatibility of Starch/Polylactic Acid[J].Materials Review,2017,31(16):41-45. |
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| Authors: | ZUO Yingfeng WU Yiqiang GU Jiyou SHE Jiarong GUO Xin and JIANG Ping |
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| Affiliation: | College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004,College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004,Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education,Northeast Forestry University, Harbin 150040,College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004,College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004 and College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004 |
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| Abstract: | Starch/PLA composites were prepared by melt extrusion, in which corn starch and poly (lactic acid) (PLA) served as raw materials, maleic anhydride (MAH) as modifier. The effects of the two modifying methods by MAH, i.e. MAH as compatibilizing agent and MAH as esterifying agent of starch, on the compatibility of starch/PLA were studied. The melt processing property, mechanical properties and water resistance of composites were also tested. X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermal gravimetric analysis (TGA) results showed that the esterified starch/PLA composite prepared by native starch dry-esterification modified with MAH and then blending with PLA had the better interface compatibility than native starch/MAH/PLA composite prepared with MAH as compatibilizer agent. Due to the influence of interfacial compatibility, the melt processing property, tensile strength, bending strength, elongation at break and water resistance of the esterified starch/PLA compo-sites were better than those of the native starch/MAH/PLA composites. |
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| Keywords: | dry-esterified starch maleic anhydride polylactic acid interfacial compatibility |
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