Abstract: Based on the study of the basic dyeing properties of PLA fiber and PLA/PHBV blend fiber, two kinds of chenille yarns containing biodegradable polyester fiber (chenille yarn I and chenille yarn II) were trial-produced by the authors. The research explored the effects of dyeing temperature, time, and pH value on their dyeing performance. The results show that Disperse Red 60, Disperse Yellow SA-GL and Disperse Blue 56 are suitable for dyeing PLA fiber and PLA/PHBV fiber. After dyeing at 100℃ and 110℃, the breaking strength of PLA fiber decreases by 4.0% and 5.2%, respectively while that of the PLA/PHBVblend fibers decreases by 10.1% and 18.9%, respectively.The suitable dyeing condition for chenille yarn I with disperse dyes is at the pH value of 4～5, dyeing temperature of 100～110℃, and a duration of 40min; the suitable dyeing condition for chenille yarn II with disperse dyesis at the pH value of 4～5, dyeing temperature of 110℃, and a duration of 30～40min.Under the above dyeing process conditions, the color fastness to rubbing and colorfastness to washing of chenille yarn I and chenille yarn II are both at or above 3～4. It proves that products meeting application requirements can be obtained after the chenille yarns produced with PLA fiber and PLA/PHBVblend fibers are dyed through suitable dyeing process.

Key words: PLA fiber, PLA/PHBV blend fiber, biodegradation, chenille yarn, dyeing performance

摘要： 在对PLA纤维和PLA/PHBV共混纤维基本染色性能研究的基础上,试制了两种含生物可降解聚酯纤维的雪尼尔纱(雪尼尔纱I和雪尼尔纱II),研究探讨了染色温度、时间、pH值对其染色性能的影响。结果表明:分散红60、分散黄SA-GL和分散蓝56适用于PLA纤维和PLA/PHBV纤维染色,经100 ℃和 110 ℃ 染色后PLA纤维断裂强力分别下降了4.0%和5.2%,PLA/PHBV共混纤维断裂强力分别下降了 10.1% 和18.9%;分散染料对雪尼尔纱I的适宜染色工艺为:pH值 4～5,染色温度100～110 ℃,时间 40 min;雪尼尔纱II的适宜染色工艺为pH值4～5,染色温度110 ℃,时间30～40 min;在上述染色工艺条件下,雪尼尔纱I和雪尼尔纱II的耐摩擦色牢度和耐皂洗色牢度均达到3～4级及以上。证明PLA纤维和PLA/PHBV共混纤维在被用于制备雪尼尔纱后,经过适宜染色工艺染色,可获得符合应用要求的产品。

关键词: PLA纤维, PLA/PHBV纤维, 生物降解, 雪尼尔纱, 染色性能