详细信息
二聚脂肪酸增韧改性聚乳酸/橡实淀粉共混体系的研究
Study on Toughening Modification of Poly(lactic acid)/Acorn Starch Blends Using Dimer Fatty Acid
文献类型:期刊文献
中文题名:二聚脂肪酸增韧改性聚乳酸/橡实淀粉共混体系的研究
英文题名:Study on Toughening Modification of Poly(lactic acid)/Acorn Starch Blends Using Dimer Fatty Acid
作者:李守海[1,2] 王春鹏[1,2] 杨雪娟[1] 夏建陵[1,2] 许玉芝[1,2]
第一作者:李守海
机构:[1]中国林业科学研究院林产化学工业研究所,江苏省生物质能源与材料重点实验室,国家林业局林产化学工程重点开放性实验室,生物质化学利用国家工程实验室,江苏南京210042;[2]中国林业科学研究院林业新技术研究所,北京100091
年份:2015
卷号:0
期号:1
起止页码:29-34
中文期刊名:中国塑料
外文期刊名:China Plastics
收录:CSTPCD;;Scopus;北大核心:【北大核心2014】;CSCD:【CSCD2015_2016】;
基金:国家"十二五"科技支撑子课题(2012BAD32B01)
语种:中文
中文关键词:聚乳酸;二聚脂肪酸;橡实淀粉;改性;共混体系
外文关键词:poly(1actic acid);;dimer fatty acid;;acorn starch;;modification;;blend
分类号:TQ321
摘要:通过熔融挤出法制备了二聚脂肪酸(DA)改性聚乳酸(PLA)/橡实淀粉(AS)共混体系,并在保持PLA和AS质量比不变(60/40),仅DA含量变化的情况下,通过扫描电子显微镜、动态热机械分析仪和同步热分析仪等测试手段对共混体系的力学性能、疏水性能、热性能和熔体流动性进行了测试分析。结果表明,随着DA含量的增加,共混体系的疏水性和熔体流动性能逐渐增强,而共混体系的拉伸、弯曲强度则呈逐渐降低的趋势;DA的加入显著提高了PLA基体材料的韧性,并在一定程度上降低了共混体系的玻璃化转变温度和初始热稳定性。
Composites of poly(lactic acid)(PLA),acorn starch(AS),and dimer fatty acid(DA)were prepared by melt extrusion.Keeping the mass ratio of PLA to AS at 60/40,the effect of DA content on the mechanical,hydrophobic,thermal properties and melt flowability of the composites was studied by tensile test,flexural test,melt index analysis,contact angle analysis,scanning electron microscope,dynamic thermomechanical analysis and thermogravimetric analysis.It showed that the hydrophobic property and melt flowability of the composites increased,while the tensile and flexural strength decreased with increasing DA content.DA could not only improved the toughness of PLA matrix,but also reduced the glass transition temperature and the early thermal stability of composites.
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