| POSS纳米复合物链运动的固体NMR研究 |
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| 引用本文： | 邹琴,申万岭,高秀枝,邓风.POSS纳米复合物链运动的固体NMR研究[J].波谱学杂志,2012,29(2):248-257. |
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| 作者姓名： | 邹琴 申万岭 高秀枝 邓风 |
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| 作者单位： | 1. 波谱与原子分子物理国家重点实验室，武汉磁共振中心(中国科学院 武汉物理与数学研究所)，湖北 武汉 430071；
2. 中国科学院 研究生院，北京 100049 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 利用固体NMR技术、并结合TEM技术研究了POSS掺杂到不同聚合物体系后POSS复合物的链段运动及结构特点，其中聚合物包括聚甲基丙烯酸正丁酯（PBMA）和聚甲基丙烯酸甲酯（PMMA）. 实验结果表明：POSS能很好的分散在这2种聚合物中，形成纳米结构的复合物；其中POSS在PBMA中形成的复合物表现出较强的链段运动性，而在PMMA中则表现出较低的运动性；同时，2D HETCOR的结果表明这2种聚合物本身结构特点不同，POSS/PBMA复合物中聚合物部分与POSS部分间的距离较近，而在POSS/PMMA中则较远.
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| 关 键 词： | 固体核磁共振(solid-state NMR) 链运动 弛豫时间 POSS纳米复合物 |
| 收稿时间： | 2011-05-19 |
A Solid-State NMR Study on the Segmental Motion of Polyhedral Oligomeric Silsequi-Oxane(POSS) Nanocomposites |
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| ZOU Qin
,
SHEN Wan-ling
,
GAO Xiu-zhi
,
DENG Feng.A Solid-State NMR Study on the Segmental Motion of Polyhedral Oligomeric Silsequi-Oxane(POSS) Nanocomposites[J].Chinese Journal of Magnetic Resonance,2012,29(2):248-257. |
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| Authors: | ZOU Qin SHEN Wan-ling GAO Xiu-zhi DENG Feng |
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| Institution: | 1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Center for Magnetic Resonance (Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences), Wuhan 430071, China;;
2. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | The segmental motions of two nanocomposites,in which polyhedral oligomeric silsequi-oxane(POSS) is respectively copolymerized with n-butyl methacrylate(BMA) and methyl methacrylate(MMA),were investigated by solid-state NMR techniques in combination with transmission electron microscopy(TEM).The results indicated that the POSS molecules are thoroughly dispersed in the two polymer matrix.The POSS/PMMA and POSS/PBMA nanocomposites showed a homogenous structure with almost one component,and the segmental motions more constrained in the POSS/PMMA nanocomposite than the POSS/PBMA nanocomposite.The 2D HETCOR results indicated the distance between the polymer and POSS unit is shorter in the POSS/PBMA nanocomposite than in the POSS/PMMA nanocomposite. |
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| Keywords: | solid-state NMR segmental motion relaxation time POSS nanocomposite |
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