摘要
采用直接铺膜法制备交联多孔淀粉/天然胶乳复合胶膜,并对复合胶膜的结构及性能进行了研究,结果表明:多孔淀粉经交联改性处理后,颗粒表面的粗糙度增加,比表面积增大;复合胶膜的拉伸强度和撕裂强度均随着交联多孔淀粉用量的增加先升后降;交联多孔淀粉的用量为10%时,复合胶膜的力学性能最优;与纯天然胶乳胶膜相比,添加交联多孔淀粉的复合胶膜的玻璃化转变温度(Tg)升高,热稳定性及耐溶剂性能提高,但耐水性能降低。
Composite films were prepared by using latex of natural rubber as the matrix and cross-linked porous starch as the reinforcing phase, and the structure and properties of the composite films were investigated. The reults showed that the roughness of starch particle surface and specific surface area increased when porous starch was crosslinked. With the increase of cross-hnked porous starch loading, the tensile strength and tear strength of the composite films increased first and then decreased. The composite film possesses the best mechanical properties at the cross-linked porous starch content of 10 parts per hundred rubber （phr）. The glass transition temperature （Tg）, thermal stability and solvent resistance of composite film are improved, but the water resistance is lower than that of the pure natural rubber latex film.
出处
《热带生物学报》
2014年第1期57-61,共5页
Journal of Tropical Biology
基金
海南省自然科学基金项目(No:511109)
海南大学青年基金项目(No:qnjj1172)
关键词
交联
多孔淀粉
天然胶乳
胶膜
crosslink
porous starch
natural rubber latex
film
