title: Isolation and recovery of cellulose from waste nylon/cotton blended fabrics by 1-allyl-3-methylimidazolium chloride.
abstract: 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.
authors.affiliation: Key Laboratory of Eco-Textile, Ministry of Education, School of Textiles and Clothing, Jiangnan University, Wuxi 214122, China; Key Laboratory of Biomass Fiber and Ecological Dyeing of Hubei Province, Wuhan Textile University, Wuhan 430073, China.
authors.forename: Fangbing
authors.initials: F
authors.lastname: Lv
authors.affiliation: Key Laboratory of Eco-Textile, Ministry of Education, School of Textiles and Clothing, Jiangnan University, Wuxi 214122, China. Electronic address: wangchaoxia@sohu.com.
authors.forename: Chaoxia
authors.initials: C
authors.lastname: Wang
authors.affiliation: State Key Laboratory of New Fiber Materials and Modern Textiles, Qingdao University, Qingdao 266071, China; Key Laboratory of Biomass Fiber and Ecological Dyeing of Hubei Province, Wuhan Textile University, Wuhan 430073, China. Electronic address: pzhu99@163.com.
authors.forename: Ping
authors.initials: P
authors.lastname: Zhu
authors.affiliation: Key Laboratory of Biomass Fiber and Ecological Dyeing of Hubei Province, Wuhan Textile University, Wuhan 430073, China.
authors.forename: Chuanjie
authors.initials: C
authors.lastname: Zhang
mesh_terms: D000498:Allyl Compounds / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry* / Q000302:isolation & purification; D032561:Cotton Fiber; D006860:Hydrogen Bonding; D007093:Imidazoles / Q000737:chemistry*; D007220:Industrial Waste; D052578:Ionic Liquids / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D009757:Nylons / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature
chemical_list: C544334:1-allyl-3-methylimidazolium; D000498:Allyl Compounds; D007093:Imidazoles; D007220:Industrial Waste; D052578:Ionic Liquids; D009757:Nylons; D002482:Cellulose
keywords: Cellulose; Ionic liquid; Recovery; Separation; Waste nylon/cotton blended fabrics