Synthesis and some properties of polyurethane cationomers with side chain azoaromatic chromophores

被引：14

作者：

Buruiana, EC

Buruiana, T

Airinei, A

Robila, G

Grecu, I

机构：

[1] Petru Poni Inst Macromol Chem, R-6600 Iasi, Romania

[2] Tech Univ Gh Asachi, Dept Phys, Iasi, Romania

来源：

POLYMER JOURNAL | 1999年 / 31卷 / 06期

关键词：

azo polyurethane; cationomers; photochromic behavior;

D O I：

10.1295/polymj.31.510

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

New polyurethane cationomers baring side chain azoaromatic chromophores on non-ionic fragment of hard segments were synthesized and characterized. Their photobehavior in solutions and polymeric films was investigated by electronic absorption spectroscopy and was evaluated comparatively with a non-ionic azourethane model and polyurethane precursor. Under UV irradiation only the polymer solutions showed a typical photochromism. while in film slate, the reversible process was impeded even at higher temperatures. By exposure at iodine vapors for 1-2 min, the cis-trans isomerization in irradiated polymer films is possible too.

引用

页码：510 / 515

页数：6

共 18 条

[1]

BESTIUC I, 1994, Patent No. 104788

[2] PHOTOCHROMISM OF POLYURETHANE CATIONOMERS WITH PENDENT AZO GROUPS [J].