文献类型：期刊文献

英文题名：Insight into in situ enzymatic transesterification modification of polyethylene terephthalate fibers with polyethylene glycol

作者：Liu, Wenjing[1]; Qiang, Kexin[2]; Ye, Peipei[1]; Li, Xin[1]; Zhao, Xiaoman[1,3,4]; Hong, Jianhan[1,3,4]; Duan, Yafeng[5]

机构：[1] School of Textile Science and Engineering, Shaoxing University, Shaoxing, 312000, China; [2] Hangzhou Meigao Huayi Chemical Industry Co., Ltd, Hangzhou, 311200, China; [3] Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province, Shaoxing, 312000, China; [4] Shaoxing Key Laboratory of High Performance Fibers & Products, Shaoxing University, Shaoxing, 312000, China; [5] Shaoxing [Keqiao] Printing and Dyeing Industry Engineer Collaborative Innovation Center, Shaoxing, 312030, China

年份：2024

卷号：146

起止页码：140

外文期刊名：Process Biochemistry

收录：EI(收录号：20243016738013)、Scopus(收录号：2-s2.0-85198992318)

语种：英文

外文关键词：Aspergillus - Contact angle - Differential scanning calorimetry - Fourier transform infrared spectroscopy - Infrared reflection - Moisture - Plastic bottles - Polyethylene glycols - Polyethylenes - Scanning electron microscopy - Thermogravimetric analysis - Water absorption - Wetting

外文摘要：Polyethylene terephthalate (PET) fabric was enzymatically modified with polyethylene glycol (PEG). Lipase from Aspergillus oryzae was used as a catalyst. The wetting behavior of the modified PET fabric was characterized by the water contact angle, water adsorption dynamics and moisture regain. The initial water contact angle of the modified fabric decreased from 129.3° to 74.9°. The water absorption dynamics results indicated that the equilibrium water absorption amount of the modified fabric was approximately 10 times greater than that of the untreated sample. The initial absorption rate (Vinit) of the modified fabric was almost 30 times higher than that of the untreated fabric. The moisture regain reached 3.52 % after modification. Scanning electron microscopy revealed granular and sheet coatings on the surface of the modified fabric. Chemical linkage of PEG onto the PET fibers was confirmed by attenuated total reflection–Fourier transform infrared spectroscopy. The modification had no significant effect on the thermal properties of the PET fabrics according to the thermogravimetric curve and differential scanning calorimetry results. The mechanical properties of the modified fabric were slightly improved. Therefore, in situ enzymatic transesterification between PET and PEG could be a potential novel modification approach for adding value to PET fiber textiles. ? 2024 Elsevier Ltd