海岛纤维结构形态与染色性能的研究  

Study of Sea-island Fibers Structure and Their Dyeing Properties

作　　者：俞小春[1] 陈少鹏[1] 林金平[1] 张超[1] 陈建岁[1] 林国良[1] 

机构地区：[1]厦门大学化学化工学院材料科学与工程系,福建厦门361005

出　　处：《厦门大学学报（自然科学版）》2007年第1期67-71,共5页Journal of Xiamen University：Natural Science

摘　　要：通过色差仪、DSC、结晶速度测量、显微图像分析以及动态机械热分析研究了四种海岛纤维的结晶度、结晶速度、晶粒大小、玻璃化温度与染色性能的关系.结果表明:结晶度小,结晶速度慢,晶粒尺寸大,玻璃化温度低等等均有利于纤维染色性能的提高.Dyeing is one of the biggest problems of sea-island fibers. It is well known that dyeing quality of industrial poly ethylene terephthalate （PET） yarns can be greatly influenced by the physical and structural properties of the yarns. In order to evaluate the effect of physical and structural properties on dyeing performance of sea-island fibers,this article dealt with four commercially available sea-island super micro fibers,whose main component were PET and the specifications were 105/48 ＊ 37i, 105/48 ＊25i, 105/36 ＊37i,and 105/36 ＊ 37i^＊ ;their chromatic differences were characterized and compared using a color difference meter; and subsequently the different physical and structural factors that may affect the dyeing performance,such as the glass-transition temperature,the degree of crystallinity, the crystallization rate, and the grain size of these fibers, were investigated. The relationship between dyeing performance and these factors was studied. Differential scanning calorimetry （DSC） revealed that low degree of crystallinity exerted favorable influence on dyeing. Crystallization detector suggested that dyeing quality was improved as crystallization rate decreased. When these fibers were observed under polarizing microscope, it showed that good dyeing quality was related to big grain size. The resuits of the dynamic mechanical thermo analysis （DMTA） showed that fibers with low glass-transition temperature tended to yield good dyeing quality because of the molecular motion.

关 键 词：海岛纤维 染色性能 结构形态 

分 类 号：TQ317[化学工程—高聚物工业]