第 48 卷第 3 期 Vol. 48 No. 3 2018 年 6 月 Jun 2018

所属栏目：功能材料 碱木质素对EVA复合材料力学性能的影响

汪巧蕾1，2，3，郑 艳3，丁纪恒3，OBAID Ur Rahman3，余海斌3，吕 瑾2，苏胜培2* （1. 河源市正德中学，广东 河源 517000；2. 湖南师范大学 化学化工学院，湖南 长沙 410081；3. 中国科学院宁波材料技术与工程研究所，浙江 宁波 315201）

摘　要：将两种不同的碱木质素（Lignin A和Lignin B）分别与乙烯-乙酸乙烯酯共聚物（EVA）在转矩流变仪中共混后，经平板硫化仪热压成片制得Lignin／EVA复合材料。探究了两种碱木质素的理化性质及其对Lignin／EVA复合材料力学性能的影响。傅里叶红外光谱分析（FT-IR）表明Lignin A以紫丁香基基本结构单元为主，Lignin B则以愈创木基、紫丁香基基本结构单元为主；Lignin／EVA复合材料的力学性能测试结果表明Lignin A／EVA复合材料的力学性能比Lignin B／EVA复合材料的力学性能好；扫描电子显微镜（SEM）测试结果表明Lignin A与EVA的共混相容性较Lignin B与EVA的共混相容性好。

关键词：碱木质素；乙烯-乙酸乙烯酯共聚物；复合材料；力学性能

中图分类号：TQ322.4　　文献标识码：A　　文章编号：1009-9212（2018）03-0055-06

Effect of Alkaline Lignins on the Mechanical Properties of Lignin/EVA Composites

WANG Qiao-lei1,2,3, ZHENG Yan3,DING Ji-heng3,OBAID Ur Rahman3,YU Hai-bin3, L?譈 Jin2,SU Sheng-pei2* (1. Heyuan Zhengde Middle School, Heyuan 517000, China; 2. College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China; 3. Ningbo Institute of Materials Technologies and Engineering, Chinese Academy of Sciences, Ningbo 315201, China)

Abstract：Alkali lignin (Lignin A or Lignin B) was mixed with ethylene vinyl acetate copolymer (EVA) in a torque rheometer, and the obtained Lignin/EVA composites samples were prepared by hot pressing. The physicochemical properties of two alkali lignins and their effects on the mechanical properties of Lignin/EVA composites were evaluated. Data from Fourier transform infrared spectroscopy (FT-IR) showed that Lignin A was dominated by the basic structural unit of syringa, however, Lignin B was mainly composed of basic units of guaiacyl and syringa; the mechanical properties of Lignin A/EVA composites were better than that of Lignin B/EVA composites; the results of SEM indicated that the compatibility between Lignin A and EVA was better than that between Lignin B and EVA.

Key words：alkali lignin; ethylene vinyl acetate copolymer; composite; mechanical properties

基金项目：生化木质素资源化应用开发研究项目（化531220）。

作者简介：汪巧蕾（1993-），女，湖南益阳人，硕士研究生，研究方向：高分子复合材料（E-mail：758321116@qq.com）。

联 系 人：苏胜培，教授，博士研究生导师（E-mail：sushengpei@yahoo.com）。

收稿日期：2018-06-05