Isolation and recovery of cellulose from waste nylon/cotton blended fabrics by 1-allyl-3-methylimidazolium chloride.
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.
['Lv|Fangbing|F|', 'Wang|Chaoxia|C|', 'Zhu|Ping|P|', 'Zhang|Chuanjie|C|']
D000498:Allyl Compounds D002482:Cellulose D032561:Cotton Fiber D006860:Hydrogen Bonding D007093:Imidazoles D007220:Industrial Waste D052578:Ionic Liquids D008855:Microscopy, Electron, Scanning D009757:Nylons D017550:Spectroscopy, Fourier Transform Infrared D013696:Temperature
Recovery Cellulose Waste nylon/cotton blended fabrics Separation Ionic liquid