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Studies on hyperbranched polyurethane by multidetector size exclusion chromatography

机译:多检测器尺寸排阻色谱法研究超支化聚氨酯

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Hyperbranched polyurethane (HP) and its linear analog (LPU) were studied by size exclusion chromatography (SEC), utilizing a combination of refractive index (RI), right angle light scattering (RALLS), and differential viscosity (DV) detectors. The relationships between retention volume (V-e), intrinsic viscosity (eta), radius of gyration (R.), and the molecular structure were investigated. It was shown that the hyper-branched polyurethane had lower V-e, eta, and R-g than its linear analog when they had the same molecular weight. The branching parameter g and g' were calculated. (C) 2002 Wiley Periodicals, Inc. [References: 11]
机译:通过尺寸排阻色谱(SEC),结合使用折射率(RI),直角光散射(RALLS)和差示粘度(DV)检测器,研究了超支化聚氨酯(HP)及其线性类似物(LPU)。研究了保留体积(V-e),特性粘度(η),回转半径(R.)和分子结构之间的关系。结果表明,当它们具有相同的分子量时,超支化聚氨酯的V-e,eta和R-g比其线性类似物低。计算了分支参数g和g'。 (C)2002 Wiley Periodicals,Inc. [参考:11]

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