GLYCERYL POLYPHOSPHAZENES - SYNTHESIS, PROPERTIES, AND HYDROLYSIS

被引：50

作者：

ALLCOCK, HR

KWON, S

机构：

[1] Pennsylvania State Univ, University, Park, PA, USA, Pennsylvania State Univ, University Park, PA, USA

来源：

MACROMOLECULES | 1988年 / 21卷 / 07期

关键词：

GELS; -; Forming; GLYCEROL; PLASTICS; Hydrolysis;

D O I：

10.1021/ma00185a015

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Methylene-, isopropylidene-, and methoxymethylene-protected glyceryl units have been linked to cyclic and high polymeric phosphazenes. The structures and physical properties of these protected glyceryl-substituted phosphazenes were investigated by **3**1P NMR, **1H NMR, and IR spectroscopy and thermal analysis. Hydrolytic deprotection reactions in acidic media yielded the water-soluble cyclic trimeric and high polymeric glycerylphosphazenes. Cross-linking of the protected high polymers was accomplished by gamma irradiation. The deprotected polymer cross-linked in the presence of adipoyl chloride or hexamethylene diisocyanate to yield systems that absorbed water to form hydrogels. Slow hydrolysis of poly(diglycerophosphazene) occurred in neutral aqueous media at 37 degree C to yield glycerol, phosphoric acid, and ammonia.

引用

页码：1980 / 1985

页数：6

共 35 条

[1] SYNTHESIS OF SUGAR-SUBSTITUTED CYCLIC AND POLYMERIC PHOSPHAZENES AND THEIR OXIDATION, REDUCTION, AND ACETYLATION REACTIONS [J].