Eco-friendly, Expeditious Depolymerization of PET in the Blend Fabrics by Using a Bio-based Deep Eutectic Solvent under Microwave Irradiation for Composition Identification

被引:11
|
作者
Choi, Samuel [1 ]
Choi, Hyung-Min [1 ,2 ]
机构
[1] Soongsil Univ, Dept Organ Mat & Fiber Engn, Seoul 06978, South Korea
[2] Soongsil Univ, Dept Informat Commun Mat & Chem Convergence Techn, Seoul 06978, South Korea
关键词
Depolymerization; Polyethylene terephthalate (PET); Cotton; Bio-based deep eutectic solvent; Glycerol-choline chloride; CHOLINE CHLORIDE; COTTON; POLYESTER; SURFACE; DESS;
D O I
10.1007/s12221-019-8931-y
中图分类号
TB3 [工程材料学]; TS1 [纺织工业、染整工业];
学科分类号
0805 ; 080502 ; 0821 ;
摘要
An eco-friendly, expeditious technique was developed for depolymerization of polyethylene terephthalate (PET) in blend fabric. A completely bio-based deep eutectic solvent (DES), glycerol-choline chloride (GC), could replace conventional toxic solvents commonly used in PET depolymerization. Microwave irradiation was used to facilitate the process with high energy efficiency. The PET portion in 65/35 and 50/50 PET/cotton blends was removed by GC containing 5% NaOH in less than 100 seconds of microwave irradiation. Various instrumental techniques such as FTIR, TGA, SEM, and XRD substantiated the removal of PET from the blend fabrics. The depolymerization mechanism was investigated by analyzing its dissolved residues by HPLC. Finally, a commercial sample with 45/55 PET/cotton was also examined to confirm that the test method developed could have practical application.
引用
收藏
页码:752 / 759
页数:8
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