纤维素纳米晶对木薯淀粉基复合膜性能的影响

Effect of cellulose nanocrystal on properties of cassava starch-based composite film

为改善提高木薯淀粉基复合膜的性能,以木薯淀粉为原料,附加甘油、壳聚糖,加入纤维素纳米晶,采用流延法制备淀粉基复合膜,研究纤维素纳米晶对木薯淀粉基膜理化性能的影响。实验结果显示纤维素纳米晶含量增加,淀粉基膜的吸水率、透光率及透油率均呈下降趋势,膜的生物降解性提高。纤维素纳米晶添加质量分数为2.5%、降解7 d时,降解率达18.28%。结果证明纤维素纳米晶改善了木薯淀粉基膜的性能,增强了膜的生物降解性。可为用作绿色生物包装材料、减少环境污染提供参考。

This paper has conducted a literature review of the family hoverfly at the beginning of the 21 st century at home and abroad. Due to the rich diversity of species and the different degree of species studies in different regions, species studies is still active for current study. The molecular systematics of the hoverfly has been studied deeply and extensively overseas. Biology, ecological study and other researches mainly focus the study on several beneficial species. At present, domestic studies on hoverfly are still focused on the study of species study, while other studies are obviously insufficient. Therefore, more efforts should be made in the study of hoverfly in China, especially in molecular systematics, in order to shorten the gap between the study of hoverfly and that of the world.