摘要
利用X-射线光电子能谱(XPS)研究了双酚A型聚碳酸酯经自然老化后的表面化学组成与结构变化。结果表明,表面光降解反应可以分成两个主要阶段:在老化前期,主要是碳酸酯基的分解;之后主要是偕二甲基基团和芳环的氧化。而前期碳酸酯基的分解对其力学性能的影响最为显著。
The X-ray photoelectron spectroscopy (XPS) has been used to monitor the changes of thesurface composition and structure of bisphenol A polycarbonate during natural weathering. It isshown that photo-oxidation mechanism is the predominant process in the surface region. Thesurface photo-oxidation involves the gem dimethyl groups and aromatic ring system.
出处
《分析测试学报》
CAS
CSCD
1993年第5期89-92,共4页
Journal of Instrumental Analysis
关键词
X-射线
光电子能谱
聚碳酸酯
氧化
X-ray photoelectron spectrosccopy
Polycatbonate
Oxidation
