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首页> 外文期刊>Journal of Applied Polymer Science >Light scattering characterization of poly(tetrafluoroethylene-co-perfluromethyl vinyl ether) copolymer
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Light scattering characterization of poly(tetrafluoroethylene-co-perfluromethyl vinyl ether) copolymer

机译：聚四氟乙烯-全氟甲基乙烯基醚共聚物的光散射特性

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摘要

Static and dynamic light scattering experiments were performed to characterize the copolymer of tetrafluoroethylene (TFE) and perfluoromethyl vinyl ether (PMVE). Solvents of perfluoro-2-butyltetrahydrofuran (FC-75) and Flutec PP11 (PP11) were used to dissolve the TFE-PMVE copolymer. By taking advantage of the solvent properties of FC-75 and PP11, homogeneous TFE-PMVE copolymer solutions were specially prepared in a FC-75/PP11 mixed solvent. Such prepared solutions could provide a strong enough scattered intensity for light scattering studies. The molecular weight, molecular weight distribution, chain dimensions, and conformation were determined for the TFE-PMVE copolymer in the FC-75/PP11 mixed solvent. A combination of viscosity and molecular weight measurements enabled the calculation of the k value in the relation of eta(o) = k (M-w)(3.4) and thus the prediction of the molecular weight of a given TFE-PMVE copolymer with the same composition by using only the simpler and more readily available rheological measurements. (C) 2000 John Wiley & Sons, Inc. [References: 15]
机译：进行静态和动态光散射实验以表征四氟乙烯（TFE）和全氟甲基乙烯基醚（PMVE）的共聚物。使用全氟-2-丁基四氢呋喃（FC-75）和Flutec PP11（PP11）的溶剂溶解TFE-PMVE共聚物。通过利用FC-75和PP11的溶剂性能，在FC-75 / PP11混合溶剂中专门制备了均匀的TFE-PMVE共聚物溶液。这样制备的溶液可以为光散射研究提供足够强的散射强度。测定了在FC-75 / PP11混合溶剂中的TFE-PMVE共聚物的分子量，分子量分布，链尺寸和构象。粘度和分子量测量相结合，可以计算eta（o）= k（Mw）（3.4）的关系中的k值，从而可以预测具有相同组成的给定TFE-PMVE共聚物的分子量仅使用更简单，更容易获得的流变测量值。 （C）2000 John Wiley＆Sons，Inc. [参考：15]

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