Page 49 - 201812

第 35 卷第 12 期 精 细 化 工 Vol.35, No.12
2018 年 12 月 FINE CHEMICALS Dec. 2018

功能材料
PBS-co-Glu 共聚酯与磷酸酯淀粉共混制得

复合材料性能

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张 敏 1,2 ，刘伟平 ，李成涛 ，李月茹
（1. 陕西科技大学 陕西省轻化工助剂重点实验室，陕西 西安 710021；2. 陕西科技大学 环境科学与工
程学院，陕西 西安 710021）

摘要：以 L-谷氨酸(Glu)对聚丁二酸丁二醇酯(PBS)进行亲水改性，制得不同 Glu 含量（以丁二酸的物质的量为
基准，下同）的共聚酯，标记为 PBS-co-Glun%（n=0、1、2、3、4、5），并运用乳液-浇注成型法将 PBS-co-Glun%
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与磷酸酯淀粉(PPS)共混，制备了 PBS-co-Glun%/PPS 复合材料。采用 FTIR、 HNMR 表征了 PBS-co-Glun%共聚
酯的化学结构；采用 XRD、POM、SEM、光透过率和拉伸实验对共聚酯的亲水性、结晶性能及复合材料的表面
形貌、光透过率和力学性能进行了测试，脂肪酶降解实验测试了复合材料的降解性能。结果表明：随 Glu 含量
的增加，PBS-co-Glun%/PPS 复合材料的断裂伸长率和降解率均有所增加；当 Glu 含量为 4%时，PBS-co-
Glu4%/PPS 复 合材料断 裂 伸长率达 到 最大值 98% ；与 PBS/PPS 复 合材料 酶降解率 36.80% 相比，
PBS-co-Glu5%/PPS 复合材料酶降解率提高到 42.79%；所有材料中 PBS-co-Glu2%/PPS 复合材料的光透过率最大。
关键词：PBS 共聚酯；L-谷氨酸；亲水改性；磷酸酯淀粉；酶降解；功能材料
中图分类号：TQ321 文献标识码：A 文章编号：1003-5214 (2018) 12-2017-07

Preparation and Properties of PBS-co-Glu Copolyester and

Phosphate Starch Blended Composites

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ZHANG Min , LIU Wei-ping , LI Cheng-tao , LI Yue-ru
（1. Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science & Technology, Xian
710021, Shaanxi, China; 2. School of Environmental Science and Engineering, Shaanxi University of Science &
Technology, Xian 710021, Shaanxi, China）
Abstract: Hydrophilic modification of poly (butylene succinate) (PBS) by L-glutamic acid (Glu) was
conducted to obtain a series of copolyesters containing different Glu content (based on the amount of
substance of succinic acid, the same below), named as PBS-co-Glun% (n=0, 1, 2, 3, 4, 5). Then, PBS-co-
Glun%/PPS composites were prepared by emulsion casting molding method through blending PBS-co-
Glun% copolyester with phosphate starch (PPS). These PBS-co-Glun% copolyesters were characterized by
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FTIR and HNMR. Their crystallization property and hydrophilicity were investigated by XRD, POM and
water contact angle measurement. The morphologies of these composites were observed by SEM. Their
light transmittance and mechanical properties were studied. The degradability of the composites was
measured by lipase degradation experiment. The results showed that the elongation at break and
degradation rate of PBS-co-Glun%/PPS composites increased with the increase of Glu content. The
elongation at break for PBS-co-Glu4%/PPS composites reached a maximum value (98%). The degradation
rate of PBS/PPS composites was 36.80%, while that of PBS-co-Glu5%/PPS composites increased to
42.79%. The light transmittance of PBS-co-Glu2%/PPS composites was the best among the prepared
composites.
Key words: PBS copolyester; L-glutamic acid; hydrophilic modification; phosphate starch; enzyme

收稿日期：2018-01-12; 定用日期：2018-06-12; DOI: 10.13550/j.jxhg.20180037
基金项目：咸阳市科学技术研究计划项目（2016K02-19）
作者简介：张 敏（1958—），女，教授，博士，E-mail：yanjiushi206@163.com。