聚乳酸/聚(3-羟基丁酸酯-co-3-羟基戊酸酯)共混纤维的结构及其织物染色性能  

Structure of polylactide/poly(3-hydroxybutyrate-co-3-hydroxylvalerate)blend fibers and dyeing properties for their fabrics

作　　者：钱红飞[1,2] KOBIR MD.Foysal 陈龙 李林祥 方帅军[1,2] QIAN Hongfei;KOBIR MDFoysal;CHEN Long;LI Linxiang;FANG Shuaijun(College of Textile and Apparel,Shaoxing University,Shaoxing,Zhejiang 312000,China;Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province,Shaoxing University,Shaoxing,Zhejiang 312000,China)

机构地区：[1]绍兴文理学院纺织服装学院,浙江绍兴312000 [2]绍兴文理学院、浙江省清洁染整技术研究重点实验室,浙江绍兴312000

出　　处：《纺织学报》2023年第3期104-110,共7页Journal of Textile Research

基　　金：国家自然科学基金项目(21376149)。

摘　　要：聚乳酸(PLA)与聚(3-羟基丁酸酯-co-3-羟基戊酸酯)(PHBV)共混纺丝是改善聚乳酸(PLA)纤维的耐热性和柔韧性的方法之一。为了揭示共混纤维结构对其织物染色性能的影响规律,借助热重分析仪、差示扫描量热仪、X射线衍射仪等手段分别对共混纤维和PLA纤维的微结构和热性能进行分析。采用高、中、低温3类分散染料,对2类纤维织物的染色升温速率曲线、提升性和各项染色牢度等性能进行了比较。结果表明:共混纤维中PLA与PHBV两相分离,PLA相具有与PLA纤维相似的晶型结构,其结晶度较高,而PHBV相中形成较低的结晶;与PLA纤维相比,共混纤维的熔点较高,玻璃化温度稍低,因此其能在较低的温度下达到上染平衡;在相同的染色条件下,共混纤维织物的表观染色深度几乎是PLA织物的2倍;2类纤维织物的耐皂洗色牢度性能均不够理想。Objective In order to improve the heat resistance and flexibility of polylactic acid(PLA)fibers,the polylactide(PLA)/3-hydroxybutyrate-co-3-hydroxyl valentate(PHBV)blend fibers is one of the wildly used methods which received increasing attention.The literature for their preparation process,microstructure and mechanical properties were frequently found.But the relationship between the microstructure and dyeing properties lacked systematic investigation.The aim of this work is to explore the effect of structure for PLA/PHBV blend fibers on the dyeing properties of disperse dyes for their fabrics with a comparison to that of PLA fibers.Method By using the thermal weight,differential scanning calorimeter and X-ray diffraction methods,the crystallization and thermal properties including glass transition,melting temperature and thermal stability for the PLA/PHBV blend fibers and PLA fibers were investigated,respectively.The dyeing properties such as dyeing rate,build-up and color fastness of two fabrics were measured with three different types of disperse dyes which corresponded to the grades of low,medium and high energy,respectively.Results The analysis of X-ray diffraction showed that the pattern of peaks(16.74°,19.30°)for the PLA/PHBV blend fibers was similar to that for the PLA fibers(16.68°,18.90°)except a small peak at 13.82°being found(Fig.2).The crystallinity for PLA component(83.16%)was larger than the PLA fibers(77.14%).Based on the results obtained from previous research,it was confirmed that there were microphase separation between PLA and PHBV component,the small diffraction peak was derived from the PHBV component,which formed lower crystallinity.The measurement of the differential scanning calorimeter revealed that the glass transition temperature of the PLA/PHBV blend fibers(72.21℃)was slightly lower than that of the PLA fibers(74.85℃)(Fig.3),while the melting temperature(167.46℃)was slightly higher than that of the PLA fibers(166.35℃).The analysis of thermal weight illustrated that the t

关 键 词：聚乳酸 聚(3-羟基丁酸酯-co-3-羟基戊酸酯) 共混纤维 结构 染色性能 

分 类 号：TS193.1[轻工技术与工程—纺织化学与染整工程]