Chemical bonding analysis of electron-sensitive polymers by EELS

被引：30

作者：

Varlot, K

Martin, JM

Gonbeau, D

Quet, C

机构：

[1] Ecole Cent Lyon, Lab Tribol & Dynam Syst, UMR 5513, F-69131 Ecully, France

[2] Univ Pau & Pays Adour, Lab Physicochim Mol, UMR 5624, F-64000 Pau, France

[3] Elf Atochem, Grp Rech Lacq, F-64170 Artix, France

来源：

POLYMER | 1999年 / 40卷 / 20期

关键词：

EELS; polymer; molecular orbital;

D O I：

10.1016/S0032-3861(98)00782-4

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We have performed EELS analysis of poly(methyl metacrylate) (PMMA) in the analytical TEM in order to evaluate the possibility to obtain chemical information on electron sensitive polymers. In the acquired spectra, we propose an identification to the different chemical bondings in agreement with molecular orbital calculations and with previous XANES experiments. Moreover, main results confirm that PMMA is very sensitive to electrons with a critical dose of about 10(2) C m(-2). The evolution of the EELS spectra of PMMA during irradiation damage is found to be slightly dependant on the molecular weight of the polymer. Finally, a degradation process in agreement with EELS data is proposed. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：5691 / 5697

页数：7