ORGANOBISMUTH POLYMERS AS X-RAY CONTRAST MATERIALS - SYNTHESIS, CHARACTERIZATION AND PROPERTIES

被引：13

作者：

IGNATIOUS, F ^{[1
]}

SEIN, A ^{[1
]}

DELAVIZ, Y ^{[1
]}

CABASSO, I ^{[1
]}

SMID, J ^{[1
]}

机构：

[1] SUNY SYRACUSE,COLL ENVIRONM SCI & FORESTRY,FAC CHEM,POLYM RES INST,SYRACUSE,NY 13210

来源：

POLYMER | 1992年 / 33卷 / 08期

基金：

美国国家科学基金会;

关键词：

TRIPHENYLBISMUTH MONOMERS; ORGANOBISMUTH POLYMERS; RADIOPACITY;

D O I：

10.1016/0032-3861(92)91073-B

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Organobismuth monomers containing the Ph3Bi moiety were synthesized and polymerized to obtain homogeneous X-ray constrast polymers. Styryldiphenylbismuth (I), alpha-methylstyryldiphenylbismuth (II), tris(alpha-methylstyryl)bismuth (III) and (p-diphenylbismuthphenyl)vinyldimethylsilane (IV) were prepared via a Grignard reaction with BiPh2Cl. Monomers I and II are contaminated with significant amounts of Ph3Bi and divinyl compounds. Monomer I can be homo- and copolymerized radically and anionically, II can only be copolymerized, while IV did not polymerize at all. In anionic polymerization the carbanion also attacks the Ph-Bi bond of I and II. Glass transition temperatures were determined as a function of bismuth comonomer content for styrene and acrylate copolymers, and the thermal decomposition was also studied. Radiopacities in millimetres of aluminium per millimetre of polymer were found to be proportional to the molar bismuth content of the transparent copolymer specimens.

引用

页码：1724 / 1730

页数：7

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