SYNTHESIS AND CHARACTERIZATION OF POLYMER-SUPPORTED POLYTHIOETHERS - MOBILITY STUDY BY SOLID-STATE H-NMR OF GRAFTED DI-THIOETHERS, TRI-THIOETHERS AND TETRATHIOETHERS MONO-THIOL OR BISTHIOL ON MACROPOROUS POLYSTYRENE MATRICES

被引：4

作者：

LAUTH, M ^{[1
]}

FRERE, Y ^{[1
]}

MEURER, B ^{[1
]}

GRAMAIN, P ^{[1
]}

机构：

[1] INST CHARLES SADRON,ECOLE APPLICAT HAUTS POLYMERES,CTR RECH MACROMOLEC,CNRS,ULP,F-67083 STRASBOURG,FRANCE

来源：

REACTIVE POLYMERS | 1990年 / 13卷 / 1-2期

关键词：

D O I：

10.1016/0923-1137(90)90041-2

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Mono- and bisthiol-ended oligoethylenesulfides with two, three or four sulfur atoms in the chains have been synthesized, characterized and grafted onto a macroporous styrenedivinylbenzene copolymer. It has been shown that high sulfur contents are obtained and that the length of the ligand is the limiting factor in the grafting reaction. 1H NMR experiments, using the free induction decay technique on resins, indicated that hydrogens of the pendant ligands are mobile contrary to those of the grafted difunctional ligands. It is concluded that, when using a difunctional polythioether, the reaction of both ends leading to pseudo-cyclic structures is preferentially achieved. Comparison of the thermal degradation properties of the resins indicated better stability for short ligands and pseudo-cyclic structures. © 1990.

引用

页码：63 / 71

页数：9

共 13 条

[1] PREPARATION OF OXATHIAPENTADECANES [J].