聚丙烯酸作用下皮胶原纤维不同尺度结构的变化研究  

Effects of polyacrylic acid on different scales of leather collagen fibers

作　　者：邹祥龙[1] 柴玉叶[1] 许晓红[1] 兰云军[1] 

机构地区：[1]温州大学浙江省皮革工程重点实验室,浙江温州325027

出　　处：《中国皮革》2017年第8期41-42,共2页China Leather

基　　金：温州大学浙江省重中之重学科开放基金(100061200147)

摘　　要：采用透射电子显微镜、扫描电子显微镜和应力-应变分析对湿态和干态聚丙烯酸(PAA)复鞣革不同尺度结构进行了表征。结果表明:PAA主要在介孔和大孔结构层次与胶原纤维作用,在充水状态下,PAA对胶原纤维的聚集结构无明显影响,但在湿-干态转变过程中显著影响胶原纤维的聚集行为,使胶原纤维间的作用力及胶原纤维聚集的有序程度降低。The different scales structure of leather retanned with polyacrylic acid （PAA） under dry and wet state was characterized by transmission electron microscopy （TEM）, scanning electron microscope （SEM） and stress- strain analysis. The results show that PAA mainly interacts with collagen fibers at the level of mesoporous and macro- porous structure and has little influence on the aggregation structure of collagen fibers before drying. During the wet- dry state transition PAA has significant effect on the collagen fibers aggregation with making the interaction force and the aggregation degree of collagen decreasing.

关 键 词：聚丙烯酸 胶原纤维 聚集结构 湿-干态转变 取向程度 

分 类 号：TS512[轻工技术与工程—皮革化学与工程]