首页> 外文期刊>Journal of Applied Polymer Science >SIZE EXCLUSION CHROMATOGRAPHY WITH MULTIPLE DETECTORS - SOLUTION PROPERTIES OF LINEAR CHAINS OF VARYING FLEXIBILITY IN TETRAHYDROFURAN
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SIZE EXCLUSION CHROMATOGRAPHY WITH MULTIPLE DETECTORS - SOLUTION PROPERTIES OF LINEAR CHAINS OF VARYING FLEXIBILITY IN TETRAHYDROFURAN

机译:具有多种检测器的尺寸排除色谱图-四氢呋喃中线性可变的线性链的溶液性质

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摘要

Narrow molecular weight distribution polyisoprenes (PI), polybutadienes (PBD), poly(isobutylenes) (PIB), poly(methylmethacrylates) (PMMA), polystyrenes (PS), and poly(octadecyl methacrylates) (PODMA) have been studied by size exclusion chromatography (SEC) in tetrahydrofuran (THF) with light scattering and viscometric detectors. The molecular weight (M) dependence of the intrinsic viscosity, [eta], and radius of gyration, R(g), is reported for THF solutions of these polymers, in many instances for the first time. The availability of these data for a series of chains of varying flexibility allows a test of the universal calibration principle in SEC. Furthermore, an apparent dependence of the hydrodynamic parameter in good solvents, Phi, on chain stiffness is observed. All chains appear to exhibit hydrodynamic draining in THF. (C) 1996 John Wiley & Sons, Inc. [References: 24]
机译:通过尺寸排阻法研究了窄分子量分布的聚异戊二烯(PI),聚丁二烯(PBD),聚(异丁烯)(PIB),聚(甲基丙烯酸甲酯)(PMMA),聚苯乙烯(PS)和聚甲基丙烯酸十八烷基酯(PODMA)四氢呋喃(THF)中的色谱(SEC),具有光散射和粘度检测器。在许多情况下,首次报道了这些聚合物的THF溶液的固有粘度η与回转半径R(g)的分子量(M)依赖性。这些数据对于一系列灵活性各异的链的可用性允许测试SEC中的通用校准原理。此外,观察到良好溶剂Phi中流体动力学参数对链刚度的明显依赖性。所有链似乎都表现出在THF中的流体动力排放。 (C)1996 John Wiley&Sons,Inc. [参考:24]

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