CHARACTERIZATION OF OLIGOMERS IN POLY(ETHYLENE-TEREPHTHALATE) BY MATRIX-ASSISTED LASER-DESORPTION IONIZATION MASS-SPECTROMETRY

被引：39
|
作者：
WEIDNER, S
KUHN, G
JUST, U
机构：
[1] Federal Institute of Materials Research and Testing (BAM), Berlin, 12205
来源：
RAPID COMMUNICATIONS IN MASS SPECTROMETRY | 1995年 / 9卷 / 08期
关键词：
D O I：
10.1002/rcm.1290090813
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
Matrix-assisted laser desorption/ionization mass spectrometry was used for the characterization of extracted and synthesized oligo(ethylene terephthalate)s. Generally, cyclic oligomers [GT](n) could be found in technical yarns and tiles, whereas our synthesized model oligomers mainly consisted of linear chains H-[GT](n)-G. In addition, some other distributions could be identified as H-[GT](n)-OH and H-[GGT](1)-[GT](n-1)-G linear oligomers and H-[GGT](1)-[GT](n-1) cyclic oligomers, where G is an ethylene glycol unit, GG is a diethylene glycol unit, caused by impurities of ethylene glycol, and T is a terephthalic acid unit. NMR and IR investigations were carried out to verify these results.
引用
收藏
页码：697 / 702
页数：6
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