聚对苯二甲酸-己二酸丁二醇酯/聚乳酸可降解复合材料的制备及其性能研究
Study on preparation of poly(butylene adipate-co-terephthalate)/polylactic acid degradable composites and their performance
喻咏 1滕明才 1程前 1郭轩萌 1袁建平 1孟继承 2周罗挺2
作者信息
- 1. 浙江长鸿生物材料有限公司,浙江嵊州 312400
- 2. 绍兴文理学院,浙江绍兴 312000;纤维基复合材料国家工程研究中心绍兴分中心,浙江绍兴 312000
- 折叠
摘要
以聚对苯二甲酸-己二酸丁二醇酯(PBAT)为原料,添加不同量的聚乳酸(PLA),通过双螺杆熔融共混制备了 PBAT/PLA复合材料.采用傅里叶变换红外光谱仪、差示扫描量热仪和热重分析仪分别对材料复合前后的化学官能团、熔融和结晶性进行了分析研究.不同原料配比的复合材料最终通过注塑成型制备成长条状样条,在额定拉伸应变条件下分别进行了拉伸强度试验.结果表明:纯PBAT结晶性较差,当添加PLA和相容剂ADR4370S后,PBAT/PLA复合材料结晶性得到改善,在降温时出现了明显的结晶峰;PBAT/PLA复合材料的拉伸强度随PLA添加量的增加而显著增大,纯PBAT样条的拉伸强度仅为11.456 MPa,当m(PLA):m(PBAT+PLA)为20％时,PBAT/PLA复合材料的拉伸强度可达15.491 MPa,较纯 PBAT 样品提高了 35％.
Abstract
PBAT/PLA composites were prepared by twin-screw melt blending using poly(butylene adipate-co-terephthalate)(PBAT)as the raw material with the addition of different amounts of polylactic acid(PLA).The chemical functional groups,melting and crystallinity of the material before and after compositing were analyzed and investigated by Fourier transform infrared spectrometer,differential scanning calorimeter and thermogravimetric analyzer,respectively.The composites with different raw material ratios were ultimately made into long strip shaped splines by injection molding,and the tensile strength tests were carried out under rated tensile strain conditions.The results showed that the crystallinity of pure PBAT was poor,after adding PLA and compatibilizer ADR4370S,the crystallinity of PBAT/PLA composites was improved,and a clear crystallization peak appeared at reduced temperature;the tensile strength of PBAT/PLA composites increased significantly with the increase of the addition of PLA,the tensile strength of pure PBAT splines was only 11.456 MPa,and when m(PLA):m(PBAT+PLA)was 20％,the tensile strength of PBAT/PLA composites could achieve 15.491 MPa,which was 35％higher than that of pure PBAT splines.
关键词
聚对苯二甲酸-己二酸丁二醇酯/聚乳酸/熔融共混/复合材料Key words
poly(butylene adipate-co-terephthalate)/polylactic acid/melt blending/composite引用本文复制引用
基金项目
绍兴市科技计划项目(2022B41019)
出版年
2024
NETL
NSTL
万方数据