Mass spectral characterization of the thermal degradation of poly(propylene oxide) by electrospray and matrix-assisted laser desorption ionization

被引：35

作者：

Barton, Z ^{[1
]}

Kemp, TJ ^{[1
]}

Buzy, A ^{[1
]}

Jennings, KR ^{[1
]}

机构：

[1] UNIV WARWICK,DEPT CHEM,COVENTRY CV4 7AL,W MIDLANDS,ENGLAND

来源：

POLYMER | 1995年 / 36卷 / 26期

基金：

英国工程与自然科学研究理事会;

关键词：

poly(propylene oxide); electrospray; laser desorption;

D O I：

10.1016/0032-3861(96)81617-X

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The thermal degradation of poly(propylene oxide) (PPO), M(n) = 2000, can be characterized by electrospray (ESI) and matrix-assisted laser desorption ionization (MALDI). ESI and MALDI spectra of partially degraded PPO provide strong support for the thermal degradation pathway previously suggested by Griffiths el al. and Lemaire el al. Although these pathways differ in detail, it is not possible to distinguish between them from the masses of the resultant degradation species. Gel permeation chromatography data indicate that both mass spectrometric methods emphasize the presence of low-mass material, particularly in the degraded samples. This is attributed to the different sensitivities of the two techniques and some in situ fragmentation during mass spectrometric analysis.

引用

页码：4927 / 4933

页数：7