Depth-profile of photo-oxidation of polyoctenamer

被引：9

作者：

Kumar, A

Commereuc, S ^{[1
]}

Gonon, L

Verney, V

机构：

[1] Univ Clermont Ferrand, Photochim Mol & Macromol Lab, UMR CNRS 6505, F-63177 Clermont Ferrand, France

[2] ENS Chim Clermont Ferrand, F-63177 Clermont Ferrand, France

来源：

POLYMER DEGRADATION AND STABILITY | 2002年 / 75卷 / 03期

关键词：

D O I：

10.1016/S0141-3910(01)00254-3

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 non-uniformity of photo-oxidation across polyoctenamer films has been investigated by bulk and surface analysis. Standard transmission FTIR (TIR), photoacoustic (PAS), internal reflection spectroscopy (ATR) and hydroperoxide titration give a detailed picture of the spatial distribution of photo-products to characterise the depth profile of degradation. Our finding is that the chemical oxidation profile develops from the very beginning of irradiation of polyoctenamer at lambda > 300 nm. We assume that the distribution of by-products is uniform in the superficial layer in the range 3-15 Win. Nevertheless a strong depth profiling of by-products is detected in bulk layers (> 20 pm) and no photo-products are revealed by FTIR spectroscopy in the core of oxidised samples (> 50 mum). (C) 2002 Published by Elsevier Science Ltd.

引用

页码：509 / 516

页数：8

共 33 条

[1] PHOTO-OXIDATION OF ELASTOMERIC MATERIALS .1. PHOTOOXIDATION OF POLYBUTADIENES [J].