FORMATION OF ALDEHYDE GROUPS DURING THE PHOTOLYSIS OF POLY(METHYL METHACRYLATE)

被引：5
|
作者：
FRITZ, PM [1 ]
ZHU, QQ [1 ]
SCHNABEL, W [1 ]
机构：
[1] HAHN MEITNER INST BERLIN GMBH,BEREICH C,D-14109 BERLIN,GERMANY
来源：
EUROPEAN POLYMER JOURNAL | 1994年 / 30卷 / 11期
关键词：
D O I：
10.1016/0014-3057(94)90147-3
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Upon u.v. irradiation at lambda(inc) = 253.7 nm poly(alkyl acrylates) and poly(alkyl methacrylates) form a new absorption band around 280 nm. This band is assigned at least partly to aldehyde groups attached to the main-chain. Aldehyde groups formed upon irradiation of poly(methyl methacrylate) were converted to 2,4-dinitrophenylhydrazone groups and detected by absorption spectroscopy performed in conjunction with gel permeation chromatography. Quantum yields of carbonyl groups capable of reacting with 2,4-dinitrophenylhydrazine were determined: phi (CO) = 4.4 x 10(-4) (argon) and phi (CO) = 8.0 x 10(-4) (air).
引用
收藏
页码：1335 / 1338
页数：4
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