Magic Angle Spinning 13C NMR Studies of Filled Vulcanizates
Magic Angle Spinning 13C NMR Studies of Filled Vulcanizates
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填充硫化橡胶的魔角旋转 13C NMR 研究
DOI：
10.5254/1.3538175
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发表时间：
1983
影响因子：
1.5
通讯作者：
R. Komoroski
中科院分区：
文献类型：
--
作者：
R. Komoroski
本文研究了魔角旋转（MAS）~（13）C NMR作为溶液NMR红外光谱的替代方法，用于填充硫化胶弹性体组分的表征。可从标准品中获得良好的高分辨率光谱。Bloch衰变（即，没有交叉极化），使用魔角旋转和高功率去耦。尽管峰分辨率不如可比较的溶解或热解材料的13 C光谱，但MAS光谱在大多数情况下具有足够的质量用于简单填充硫化橡胶中的聚合物鉴定。MAS光谱可用于聚合物组分的直接定量分析，而无需预先样品处理。检查了范围为0至100%SBR的已知系列的填充的顺式BR/SBR硫化橡胶。直接分析得到的结果与预期值的平均绝对偏差为1.2%。本文还研究了一系列已知的NR cis-BR-SBR胶料，这些胶料已用IR进行了表征。直接N…
Abstract Magic angle spinning (MAS) 13C NMR is investigated as an alternative method to IR spectroscopy of solution state NMR for the characterization of the elastomeric conmponents of filled vulcanizates. Good high resolution spectra can be obtained from standard. Bloch decays (i.e., without cross polarization) using magic angle spinning and high power decoupling. Although the peak resolution is not as good as in 13C spectra of comparable solubilized or pyrolyzed materials, the MAS spectra are of sufficient quality for polymer identification in simple filled vulcanizates in most cases. The MAS spectra are usable for direct quantitative analysis of the polymeric components without priot sample workup. A known series of filled cis-BR/SBR vulcanizates ranging from 0 to 100% SBR was examined. Direct analysis yielded results with an average absolute deviation of 1.2% from the expected values. A known series of NR cis-BR-SBR compounds which had been characterized previously by IR was also studied. The direct N...