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

作　　者：武莉 徐鹏武 杨伟军 马丕明 WU Li;XU Pengwu;YANG Weijun;MA Piming(School of Chemical Materials Engineering,Jiangnan University,Wuxi 214100,China)

机构地区：[1]江南大学化学与材料工程学院,江苏无锡214100

出　　处：《中国塑料》2024年第7期15-19,共5页China Plastics

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。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 incorporated,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 elongation 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 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]