聚酯纤维乙二醇醇解法(Ⅱ):醇解产物表征

纺织学报 ›› 2007, Vol. 28 ›› Issue (12): 12-15.

聚酯纤维乙二醇醇解法(Ⅱ):醇解产物表征

李永贵;佴友兵;李准准;葛明桥

江南大学生态纺织教育部重点实验室江苏无锡214122

收稿日期:2007-01-23 修回日期:2007-05-01 出版日期:2007-12-15 发布日期:2007-12-15

Glycolysis of recycled polyester fibers using ethylene glycol (Ⅱ):characterization of glycolysis products

LI Yonggui;NAI Youbing;LI Zhunzhun;GE Mingqiao

Key Laboratory of Science and Technology of Eco?-Textile;Ministry of Education;Jiangnan University;Wuxi;Jiangsu 214122;China

Received:2007-01-23 Revised:2007-05-01 Online:2007-12-15 Published:2007-12-15

摘要/Abstract

摘要： 为减少废弃聚酯(PET)纤维环境污染,促进资源循环利用,使用乙二醇,以Zn(AC)2.2H2O为催化剂,对回收的PET纤维进行解聚,并分离提纯醇解产物,采用羟值、酸值、差示扫描量热法、红外光谱及高效液相色谱对醇解产物进行表征。研究结果:醇解产物主要是对苯二甲酸乙二酯(BHET)单体,还包括少量二聚物、三聚物,提纯的BHET单体纯度可达96.378%。

Abstract: In order to reduce the pollution produced by polyester wastes and promote resource recycling,the recycled polyester was depolymerized through glycolysis using excessive ethylene glycol in the presence of metal acetate as a catalyst.The glycolysis products were purified and analyzed for hydroxyl and acid values and identified by different techniques,such as differential scanning calorimetry(DSC),infrared absorption spectroscopy(IR) and high performance liquid chromatography(HPLC).It was found that the glycolysis products consist mainly of bis-2-hydroxyethyl terephthalate(BHET) monomer,little dimmer and trimer.The content of purified BHET is 96.378%.

李永贵;佴友兵;李准准;葛明桥. 聚酯纤维乙二醇醇解法(Ⅱ):醇解产物表征[J]. 纺织学报, 2007, 28(12): 12-15.

LI Yonggui;NAI Youbing;LI Zhunzhun;GE Mingqiao. Glycolysis of recycled polyester fibers using ethylene glycol (Ⅱ):characterization of glycolysis products[J]. JOURNAL OF TEXTILE RESEARCH, 2007, 28(12): 12-15.

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