聚碳酸亚丙酯/乙酰化木质素抗紫外复合材料的制备与性能研究
Preparation and properties of UV-resistant poly(propylene carbonate)/acetylated lignin composites
武莉 1徐鹏武 1杨伟军 1马丕明1
作者信息
- 1. 江南大学化学与材料工程学院,江苏 无锡 214100
- 折叠
摘要
为改善木质素(EL)与生物基聚碳酸亚丙酯(PPC)间的相容性,并赋予PPC抗紫外性,通过乙酰化反应制备得到了乙酰化木质素(ACEL),采用熔融共混法制备了PPC基复合材料.当ACEL的含量达到15%(质量分数,下同)时,复合材料的屈服强度从10 MPa提高至23 MPa,同时断裂伸长率达到725%.同时,ACEL的加入也赋予PPC优异的抗紫外老化性能,紫外光照射96 h后,PPC-ACEL-15复合材料的屈服强度和断裂伸长率的保持率均在80%以上,显著优于纯PPC和PPC-EL-15复合材料的屈服强度和断裂伸长率保持率.
Abstract
To improve the compatibility between enzymatic lignin and bio-based poly(propylene carbonate)(PPC)and to endow PPC with UV resistance,acetylated lignin(ACEL)was prepared through an acetylation reaction and then was melt blended with PPC to obtain PPC-based composites.When 15 wt%(mass fraction,same below)ACEL was incor-porated,the composites showed an increase in the yield tensile properties from 10 to 23 MPa,and their elongation at break reached 725%.Meanwhile,the addition of ACEL also endows PPC with excellent UV resistance.After 96 h UV irradiation,the PPC-ACEL-15 composites showed retention rates of all above 80%in the yield strength and elonga-tion at break.These results are significantly better than those of pure PPC and PPC-EL-15 composites.
关键词
聚碳酸亚丙酯/木质素/抗紫外老化Key words
poly(propylene carbonate)/lignin/UV resistance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