毛/涤混纺织物的分离降解工艺
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摘要
采用乙二醇与乙二胺对毛/涤混纺织物中的涤纶分离降解工艺进行了研究,在不损伤羊毛纤维的条件下,经分离可使羊毛纤维得以回收。通过对处理温度、处理时间以及溶剂与混纺织物的配比等影响因素的探讨,并对降解产物进行了红外检测、氨基酸成分分析和纤维断裂强度的测定。实验结果表明:采用乙二醇降解毛/涤混纺织物中的涤纶,在95℃条件下,处理50 min时效果最佳,混纺织物的降解率为78%;采用乙二胺在65℃、用量为混纺织物10倍的条件下处理360 min后,混纺织物可降解85%,但该工艺条件成本较高。
The separation and degradation process of polyester in wool/polyester blended fabric was studied by using ethylene glycol and ethylenediamine. Without damage, the wool can be separated and recycled. The influencing factors(reaction temperature, treatment time and the ratio of solvent and blended fabric, etc.) were discussed and the degradation products composition was analyzed, the content of amino acid and the breaking strength of the fiber were determined. The experimental results show that the optimium conditions for degradation of wool/polyester blended fabric is 50 ℃ for 50 min, the degradation rate is 78%. Ethylenediamine was used to treat the blended fabric at 65 ℃, with doseage of 10 times the amount of blended fabrics and treated for 360 min, the degradation rate was 85%.
The separation and degradation process of polyester in wool/polyester blended fabric was studied by using ethylene glycol and ethylenediamine. Without damage, the wool can be separated and recycled. The influencing factors(reaction temperature, treatment time and the ratio of solvent and blended fabric, etc.) were discussed and the degradation products composition was analyzed, the content of amino acid and the breaking strength of the fiber were determined. The experimental results show that the optimium conditions for degradation of wool/polyester blended fabric is 50 ℃ for 50 min, the degradation rate is 78%. Ethylenediamine was used to treat the blended fabric at 65 ℃, with doseage of 10 times the amount of blended fabrics and treated for 360 min, the degradation rate was 85%.
引文
[1] 魏玉娟.纺织化学[M].北京:化学工业出版社,2014.
[2] LV Lihua, ZHAO Yuping,JIANG Zhen. Methods to separate polyester/wool blended fabric[J]. Advanced Materials Research,2012,518-523:3408-3411.
[3] 周文聪,张贤,张铁江,等.废旧纤维回收技术及原理[J].纺织科技进展,2010(6):18-22.
[4] 荣真,陈昀,唐世君,等. 离子液体溶解法分离废弃涤棉混纺织物[J].纺织学报,2012,33(8):24-29.
[5] 李现顺,甘顺华,岳阳,等. 废涤棉纺织品分离回收再生技术研究[J].聚酯工业,2015, 28(6):16-19.
[6] López-Fonseca R,Duque-Ingunza I,de Rivas B,et al.Chemical recycling of post-consumer PET wastes by glycolysis in the presence of metal salts[J].Polymer Degradation and Stability,2010,95:1022-1028.
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[8] 张晓峰,麻文效,孙佳琪.涤纶降解工艺的对比研究[J].毛纺科技,2017,45(5):43-49.
[9] 张美坚,刘百坚.聚合物研究方法[M].北京:中国轻工业出版社,2000.
[10] 孙艳丽.羊毛角蛋白溶液制备的方法研究与应用[D].天津:天津工业大学,2013.
[2] LV Lihua, ZHAO Yuping,JIANG Zhen. Methods to separate polyester/wool blended fabric[J]. Advanced Materials Research,2012,518-523:3408-3411.
[3] 周文聪,张贤,张铁江,等.废旧纤维回收技术及原理[J].纺织科技进展,2010(6):18-22.
[4] 荣真,陈昀,唐世君,等. 离子液体溶解法分离废弃涤棉混纺织物[J].纺织学报,2012,33(8):24-29.
[5] 李现顺,甘顺华,岳阳,等. 废涤棉纺织品分离回收再生技术研究[J].聚酯工业,2015, 28(6):16-19.
[6] López-Fonseca R,Duque-Ingunza I,de Rivas B,et al.Chemical recycling of post-consumer PET wastes by glycolysis in the presence of metal salts[J].Polymer Degradation and Stability,2010,95:1022-1028.
[7] 张子恒.微波法在离子液体制备及催化降解PET聚酯回收对苯二甲酸上的应用研究[D].上海:东华大学,2012.
[8] 张晓峰,麻文效,孙佳琪.涤纶降解工艺的对比研究[J].毛纺科技,2017,45(5):43-49.
[9] 张美坚,刘百坚.聚合物研究方法[M].北京:中国轻工业出版社,2000.
[10] 孙艳丽.羊毛角蛋白溶液制备的方法研究与应用[D].天津:天津工业大学,2013.