文献类型：期刊文献

中文题名：聚乳酸纤维的结构及其对分散染料的吸附性能

英文题名：Polylactic acid fiber structure and absorption properties of disperse dyes

作者：钱红飞[1]

机构：[1]绍兴文理学院纺织服装学院

年份：2012

卷号：33

期号：3

起止页码：63

中文期刊名：纺织学报

外文期刊名：Journal of Textile Research

收录：CSTPCD、、北大核心2011、Scopus、CSCD2011_2012、北大核心、CSCD

基金：先进纺织材料与制备技术教育部重点实验室(浙江理工大学)开放基金项目(200906)

语种：中文

中文关键词：聚乳酸纤维;微结构;分散染料;吸附;影响

外文关键词：polylactic acid fiber; microstructure; disperse dye; adsorption

中文摘要：利用热综合分析和X衍射技术对聚乳酸短纤维与长丝进行热稳定性与微结构的分析,结果表明,短纤维与长丝具有相同的晶型结构和热稳定性,但短纤维比长丝纤维具有较高的结晶度和熔点。进一步测定分散红145和分散橙61这2种分散染料对纤维染色的吸附等温线,其吸附模型均为Nernst型。长丝纤维对分散染料具有更强的吸附能力,尤其对于分散橙61而言,其吸附分配系数和吸附饱和值均高出短纤维的1倍。由此得出,聚乳酸纤维微结构所致的分散染料吸附差异会因染料结构而异。纤维分子晶型相同的情况下,除了结晶度这一主要因素外,晶体尺寸、晶体的完整性均会对分散染料的吸附有影响。

外文摘要：Comprehensive thermal analysis and X-ray diffraction were used to analyze the thermal stability and microstructure of the staple and filament of polylactic acid fibers.The results showed that these two types of fiber have the same crystalline structure and stability,but the staple has higher crystallinity and melting point than the filament.The paper further measured the adsorption isotherm of C.I.disperse red 145 and C.I.disperse orange 61 on the two types of fiber,respectively.It was found that the adsorption followed the Nernst model.The filament exhibits a stronger ability to adsorb disperse dyes,particularly for C.I.disperse orange 64,its partition coefficient and saturation value were higher than those of the staple by one time.It can be concluded that the difference in adsorption caused by the microstructure varied with the type of disperse dye.In the case of same crystalline pattern of fiber molecules,the crystal size and crystal perfection have impacts on adsorption of disperse dyes besides the main factor of the crystallinity in fiber molecules.