DUAL PHOTO-CHEMISTRIES IN ALIPHATIC POLYAMIDES, BISPHENOL-A POLYCARBONATE AND AROMATIC POLYURETHANES - A SHORT REVIEW

被引：84

作者：

LEMAIRE, J

GARDETTE, JL

RIVATON, A

ROGER, A

机构：

[1] CNRS, Aubiere, Fr, CNRS, Aubiere, Fr

来源：

POLYMER DEGRADATION AND STABILITY | 1986年 / 15卷 / 01期

关键词：

POLYAMIDES - Aging - POLYCARBONATES - Photochemical Reactions - POLYURETHANES - Degradation - RADIATION EFFECTS - ULTRAVIOLET RADIATION;

D O I：

10.1016/0141-3910(86)90002-9

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Dual photochemistries account for the photo-ageing of aliphatic polyamides, bisphenol A polycarbonate and aromatic polyurethanes. Through the excitation at short wavelength of the chromophores of the polymeric chains (amide, aromatic carbonate and aromatic urethane groups) direct photo-transformations are observed. Phot-scission of the NH-CO groups in polyamides and photo-Fries in polycarbonate and polyurethane are the prevalent primary processes. Through the excitation at long wavelengths of absorbing impurities, defects or additives, a photo-initated oxidation proceeds.

引用

页码：1 / 13

页数：13

共 14 条

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