Aging effects on vulcanized natural rubber studied by high resolution solid state 13C-NMR

被引：28

作者：

Buzaré, JY

Silly, G

Emery, J

Boccaccio, G

Rouault, E

机构：

[1] Univ Maine, Lab Phys Etat Condense, CNRS, UPRES A6087, F-72085 Le Mans 9, France

[2] CTTM, Dept Mat, IRAP, F-72000 Le Mans, France

来源：

EUROPEAN POLYMER JOURNAL | 2001年 / 37卷 / 01期

关键词：

natural rubber; vulcanization; aging; solid state C-13-NMR;

D O I：

10.1016/S0014-3057(00)00081-1

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The vulcanization chemistry, network formation and thermal oxidative aging effects of unfilled and carbon-black filled natural rubber vulcanized with organic peroxide, efficient vulcanization (EV) system and conventional sulfur system are studied by solid state C-13-NMR spectroscopy. Cis-trans isomerization and different sulfide structures are detected and identified through the chemical shift values of the extra NMR lines, which are observed in the various vulcanizates. It is shown that the kinetics of crosslink formation map be followed by this technique. A destruction of the polysulfidic crosslinks is clearly related to the aging process in the conventional system of cured unfilled or filled vulcanizates, whereas no significant modification is observed in the peroxide and the EV cured ones. (C) 2000 Elsevier Science Ltd. All lights reserved.

引用

页码：85 / 91

页数：7

共 18 条

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