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Nuclear magnetic resonance study of commercial poly(vinyl acetate)

机译:商用聚醋酸乙烯酯的核磁共振研究

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The commercial poly(vinyl acetate) bulk was studied by nuclear magnetic resonance (NMR) at solution and solid state to understand much better the behavior of this polymer to obtain information on structure, sample molecular mobility, and heterogeneity. To analyze the behavior of this polymer, we have chosen NMR techniques, such as carbon-13 solution, magic angle spinning, cross-polarization/magic angle spinning, proton spin-relaxation time in the rotating frame parameter (T(1)rho), and dipolar dephasing experiment. Therefore, from the NMR response, poly(vinyl acetate) presents a random monomer sequence distribution along the macromolecule chains, and this provides microdomains with different mobilities. (C) 1998 John Wiley & Sons, Inc. [References: 13]
机译:通过在溶液和固态下的核磁共振(NMR)研究了商用聚醋酸乙烯酯本体,以更好地了解这种聚合物的行为,以获得有关结构,样品分子迁移率和异质性的信息。为了分析这种聚合物的行为,我们在旋转框架参数(T(1)rho)中选择了NMR技术,例如碳13溶液,魔角纺丝,交叉极化/魔角纺丝,质子自旋弛豫时间。 ,以及偶极移相实验。因此,从NMR响应来看,聚乙酸乙烯酯沿着大分子链呈现出随机的单体序列分布,这提供了具有不同迁移率的微区。 (C)1998 John Wiley&Sons,Inc. [参考:13]

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