纺织学报 ›› 2012, Vol. 33 ›› Issue (1): 11-14.

• 纤维材料 • 上一篇    下一篇

丙三醇醇解聚酯产物的测试与表征

余天石1,俞捷2,葛明桥2   

  1. 生态纺织教育部重点实验室(江南大学)
  • 收稿日期:2011-01-14 修回日期:2011-03-28 出版日期:2012-01-15 发布日期:2012-01-10
  • 通讯作者: 余天石 E-mail:yutsh@126.com
  • 基金资助:

    校级

The mechanism of polyester PET degradationed by glycerol

  • Received:2011-01-14 Revised:2011-03-28 Online:2012-01-15 Published:2012-01-10

摘要: 本文采用醇解法,研究了废弃聚酯纤维(PET)在丙三醇中的醇解机理,并利用红外光谱(FT-IR)、紫外光谱(UV)、质谱(MS)、高效液相色谱(HPLC)、热重(TGA)五种表征方法对醇解产物进行分析。首先通过红外光谱和紫外光谱初步判定降解产物结构;其次应用质谱分析得到降解产物的分子结构和相对分子质量;再次由高效液相色谱对降解产物进行定量分析,并结合热重分析判断产物纯度,最后应用盐酸-丙酮法测定降解产物的环氧值。综合五种表征,得到了丙三醇醇解PET聚酯的机理,并测定降解产物的环氧值为0.259。

Abstract: In this paper, we studied the degradation mechanism of the waste polyester (PET) degradated in glycerol. We used Infrared Spectroscopy (FT-IR) ,Ultraviolet(UV), Mass (MS) , High Performance Liquid Chromatography (HPLC) and (TGA) to analyze the characterization of the degradated product. Firstly, the structures of the degradated product wase got by FT-IR and UV; then we got the molecular structure and molecular weight through Mass; what’s more, we analyzed the degradation product quantitatively with HPLC, at the same time, we combined the TGA analysis to determine the pure of the alcoholysis product, finally, we got the epoxy value through the method of hydrochloric acid-acetone. Synthesize the five analysis, we got the degradation mechanism, and the epoxy value was 0.259.

中图分类号: 

  • TQ340
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