PLA/E-MA-GMA/PBS复合材料力学及生物分解性能研究
Study on Mechanical and Biodegradation Performance of PLA/E-MA-GMA/PBS Composites
刘志刚 1颜祥禹 2陈波 3肖洋 2李俊文 3周魏华 4武丽达2
作者信息
- 1. 吉林中粮生化有限公司玉米深加工国家工程研究中心,吉林长春 130033;南昌大学,江西南昌 330036
- 2. 吉林中粮生化有限公司玉米深加工国家工程研究中心,吉林长春 130033
- 3. 吉林中粮生物材料有限公司,吉林长春 130033
- 4. 南昌大学,江西南昌 330036
- 折叠
摘要
文章通过共混改性的方法提升聚乳酸(PLA)的韧性,获得抗冲击的生物降解材料.在PLA中加入乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯共聚物(E-MA-GMA)和聚丁二酸丁二醇酯(PBS),通过共混熔融反应加工的方法,制备PLA/E-MA-GMA/PBS复合材料,研究了不同E-MA-GMA含量对复合材料的热学性能、流变性能、流动性能、力学性能、相形态、生物分解性能的影响.结果表明:当E-MA-GMA含量为5%～25%时,PLA/E-MA-GMA/PBS复合材料生物分解率均大于60%,符合GB/T 19277.1-2011中生物分解塑料要求.E-MA-GMA可以显著提升PLA/E-MA-GMA/PBS复合材料的韧性和冲击强度,同时进一步说明PLA/E-MA-GMA/PBS复合材料之间存在部分相容性.随着E-MA-GMA含量的增加,PLA/E-MA-GMA/PBS复合材料的复数黏度显著提高,各组分之间发生分子链缠结增强,E-MA-GMA、PLA和PBS之间发生明显的相互作用.
Abstract
The purpose of this paper is to improve the toughness of polylactic acid(PLA)through the method of blending modification to obtain impact resistant biodegradable materials.PLA/EMA-GMA/PBS composites were prepared by adding ethylene-methyl acrylate-glycidyl methacrylate copolymer(EMA-GMA)and polybutylene succinate(PBS)to PLA by the method of blending and melting reaction processing.The influences of different E-MA-GMA content on the thermal properties,rheological properties,flowability,mechanical properties,phase morphology,and biological decomposition properties were studied.The results show that when the E-MA-GMA content is 5%～25%,the biological decomposition rate of PLA/E-MA-GMA/PBS composites is larger than 60%,which meets the requirements of biodegradable plastics in GB/T 19277.1-2011.E-MA-GMA can significantly improve the toughness and impact strength of PLA/E-MA-GMA/PBS composites,and further shows that there is partial compatibility between PLA/E-MA-GMA/PBS composites.With the increase of E-MA-GMA content,the complex viscosity of the PLA/E-MA-GMA/PBS composites increases remarkedly,the molecular chain entanglement of different components.There is a significant interaction between E-MA-GMA,PLA,and PBS.
关键词
聚乳酸/乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯/聚丁二酸丁二醇酯/力学性能/生物分解性能Key words
Polylactic acid/Ethylene-methyl acrylate-glycidyl methacrylate/Polybutylene succinate/Mechanical properties/Biodegradation performance引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据