| 通过宽线固体核磁共振氢谱研究半晶高分子的相结构 |
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| 引用本文： | 吴金泽,辛家祥,付晓彬,姚叶锋. 通过宽线固体核磁共振氢谱研究半晶高分子的相结构[J]. 波谱学杂志, 2019, 36(1): 23-33. DOI: 10.11938/cjmr20182648 |
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| 作者姓名： | 吴金泽 辛家祥 付晓彬 姚叶锋 |
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| 作者单位： | 华东师范大学物理与材料科学学院,上海市磁共振重点实验室,上海200062;华东师范大学物理与材料科学学院,上海市磁共振重点实验室,上海200062;华东师范大学物理与材料科学学院,上海市磁共振重点实验室,上海200062;华东师范大学物理与材料科学学院,上海市磁共振重点实验室,上海200062 |
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| 基金项目： | 国家自然科学基金资助项目（21574043，41572103）；中央高校基本科研业务费专项资金. |
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| 摘 要： | 宽线固体核磁共振氢谱(~1H NMR)是一种研究半晶高分子相结构的经典方法.本文以半晶聚乙烯的宽线固体~1H NMR谱为例,探讨了通过Gaussian/Sinc、Gaussian和Lorentzian函数组合对宽线固体~1H NMR谱图进行拟合的方案,并根据半晶聚乙烯的相结构成分对拟合得到的各信号成分进行归属.并在此基础上探讨了各个相结构中分子链运动与信号线型的相关性,以及利用宽线固体~1H NMR谱测量半晶高分子结晶度存在的困难.
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| 关 键 词： | 宽线固体核磁共振氢谱 半晶高分子 相结构 界面 分子链运动 |
| 收稿时间： | 2018-05-14 |
A Wide-Line Solid-State 1H NMR Study of Phase Structures of Semi-Crystalline Polymers |
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| WU Jin-ze,XIN Jia-xiang,FU Xiao-bin,YAO Ye-feng. A Wide-Line Solid-State 1H NMR Study of Phase Structures of Semi-Crystalline Polymers[J]. Chinese Journal of Magnetic Resonance, 2019, 36(1): 23-33. DOI: 10.11938/cjmr20182648 |
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| Authors: | WU Jin-ze XIN Jia-xiang FU Xiao-bin YAO Ye-feng |
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| Affiliation: | Shanghai Key Laboratory of Magnetic Resonance, College of Physics and Materials Science, East China Normal University, Shanghai 200062, China |
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| Abstract: | Wide-line solid-state proton nuclear magnetic resonance (1H NMR) spectrometry is a classical technique to study the phase structures of semi-crystalline polymers. In this paper, the wide-line solid-state 1H NMR spectrum of semi-crystalline polyethylene was acquired, and fitted with the combination of Gaussian/Sinc, Gaussian and Lorentzian functions. The four signal components decomposed from the wide-line solid-state 1H NMR spectra were assigned to the crystallization phase, crystalline interface phase, amorphous interface phase and amorphous phase, respectively. The chain dynamics in different phase was also studied with the temperature-dependent wide-line solid-state 1H NMR method. The difficulties in determining the crystallinity of semi-crystalline polymers with wide-line solid-state 1H NMR were discussed. |
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| Keywords: | wide-line solid-state 1H NMR semi-crystalline polymer phase structure interphase chain motion |
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