解聚
对苯二甲酸
聚对苯二甲酸乙二醇酯
聚酯纤维
纤维素
产量(工程)
原材料
角质酶
纤维素酶
水解
酶水解
化学
有机化学
结晶度
材料科学
制浆造纸工业
废物管理
复合材料
工程类
作者
Sandra Kaabel,Jane Arciszewski,Tristan H. Borchers,J. P. Daniel Therien,Tomislav Friščić,Karine Auclair
出处
期刊:Chemsuschem
[Wiley]
日期:2022-11-03
卷期号:16 (1)
被引量:23
标识
DOI:10.1002/cssc.202201613
摘要
Abstract Waste polyester textiles are not recycled due to separation challenges and partial structural degradation during use and recycling. Chemical recycling of polyethylene terephthalate (PET) textiles through depolymerization can provide a feedstock of recycled monomers to make “as‐new” polymers. While enzymatic PET recycling is a more selective and more sustainable approach, methods in development, however, have thus far been limited to clean, high‐quality PET feedstocks, and require an energy‐intensive melt‐amorphization step ahead of enzymatic treatment. Here, high‐crystallinity PET in mixed PET/cotton textiles could be directly and selectively depolymerized to terephthalic acid (TPA) by using a commercial cutinase from Humicola insolens under moist‐solid reaction conditions, affording up to 30±2 % yield of TPA. The process was readily combined with cotton depolymerization through simultaneous or sequential application of the cellulase enzymes CTec2®, providing up to 83±4 % yield of glucose without any negative influence on the TPA yield.
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