Investigation of partially deuterated poly(butadiene) elastomers. Part 1. 1H and 2H nmr transverse relaxation data
Investigation of partially deuterated poly(butadiene) elastomers. Part 1. 1H and 2H nmr transverse relaxation data
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DOI：
10.1016/s0032-3861(99)00457-7
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发表时间：
2000-04
期刊：
影响因子：
4.6
通讯作者：
H. Menge;S. Hotopf;U. Heuert;H. Schneider
中科院分区：
文献类型：
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作者：
H. Menge;S. Hotopf;U. Heuert;H. Schneider
众所周知，氘核磁共振是一种用于研究有序和取向的非常灵敏的工具。本文介绍了具有系统变化弹性特性的部分氘化聚丁二烯弹性体的 1H 和 2H 核磁共振测量。对质子和氘核核磁共振弛豫以及机械变形下的行为进行了综合研究。将 2H 核磁共振横向磁化数据与将弹性体氘横向磁化数据描述为弹性链和自由悬挂链末端贡献的线性叠加的模型的预测进行比较。将结构参数与机械和膨胀测量的结果进行比较。研究了微观结构、前体链长及其摩尔质量分布以及交联密度对横向松弛和变形行为的影响。
It is well known that deuteron nmr is a very sensitive tool for the investigation of order and orientation.1H and2H nmr measurements of partially deuterated poly(butadiene) elastomers with systematically varied elastic properties are presented. A combined study of proton and deuteron nmr relaxation and the behavior under mechanical deformation was performed.2H nmr transverse magnetization data are compared to the predictions of a model describing elastomer deuterium transverse magnetization data as a linear superposition of contributions from elastic chains and free dangling chain ends. The structural parameters are compared with results from mechanical and swelling measurements. The influence of microstructure, precursor chain length and their molar mass distribution as well as of the crosslink density on the transverse relaxation and the deformation behavior were studied.