Isolation and recovery of cellulose from waste nylon/cotton blended fabrics by 1-allyl-3-methylimidazolium chloride

被引：40
作者：
Lv, Fangbing [1 ,3 ]
Wang, Chaoxia [1 ]
Zhu, Ping [2 ,3 ]
Zhang, Chuanjie [3 ]
机构：
[1] Jiangnan Univ, Sch Text & Clothing, Minist Educ, Key Lab Ecotext, Wuxi 214122, Peoples R China
[2] Qingdao Univ, State Key Lab New Fiber Mat & Modern Text, Qingdao 266071, Peoples R China
[3] Wuhan Text Univ, Key Lab Biomass Fiber & Ecol Dyeing Hubei Prov, Wuhan 430073, Peoples R China
来源：
CARBOHYDRATE POLYMERS | 2015年 / 123卷
基金：
中国国家自然科学基金;
关键词：
Cellulose; Waste nylon/cotton blended fabrics; Separation; Recovery; Ionic liquid; IONIC LIQUIDS; SOLVENT; COTTON; ACETYLATION; NANOFIBERS; PYROLYSIS; NYLON;
D O I：
10.1016/j.carbpol.2015.01.043
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Development of a simple process for separating cellulose and nylon 6 from their blended fabrics is indispensable for recycling of waste mixed fabrics. An efficient procedure of dissolution of the fabrics in an ionic liquid 1-allyl-3-methylimidazolium chloride ([AMIM]Cl) and subsequent filtration separation has been demonstrated. Effects of treatment temperature, time and waste fabrics ratio on the recovery rates were investigated. SEM images showed that the cotton cellulose dissolved in [AMIM]Cl while the nylon 6 fibers remained. The FTIR spectrum of regenerated cellulose (RC) was similar with that of virgin cotton fibers, which verified that no other chemical reaction occurred besides breakage of hydrogen bonds during the processes of dissolution and separation. TGA curves indicated that the regenerated cellulose possessed a reduced thermal stability and was effectively removed from waste nylon/cotton blended fabrics (WNCFs). WNCFs were sufficiently reclaimed with high recovery rate of both regenerated cellulose films and nylon 6 fibers. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：424 / 431
页数：8
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