Polymer FractionationManfred J. R. Cantow |
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Page 109
... gradient actually harms it , to the opposite view that the temperature gradient is essential in order to achieve efficient fractionation . This section will attempt to present equitably the pertinent references and viewpoints from ...
... gradient actually harms it , to the opposite view that the temperature gradient is essential in order to achieve efficient fractionation . This section will attempt to present equitably the pertinent references and viewpoints from ...
Page 114
... GRADIENT COMPARISON OF THE CHROMATOGRAPHIC METHOD WITH OTHER FRACTIONATION TECHNIQUES Flowers et al . [ 3 ] have developed a stepwise continuous solvent gradient for use with elution chromatography . This is essentially a procedure for ...
... GRADIENT COMPARISON OF THE CHROMATOGRAPHIC METHOD WITH OTHER FRACTIONATION TECHNIQUES Flowers et al . [ 3 ] have developed a stepwise continuous solvent gradient for use with elution chromatography . This is essentially a procedure for ...
Page 116
... gradient . This is in accord with the conclusions of others [ 23 ] . However , because of the large variations in solvent gradient and flow rate employed , a direct comparison of the two methods is not con- clusive . Variations in the ...
... gradient . This is in accord with the conclusions of others [ 23 ] . However , because of the large variations in solvent gradient and flow rate employed , a direct comparison of the two methods is not con- clusive . Variations in the ...
Contents
Polydispersity of High Polymers | 3 |
Fractionation Theory | 10 |
Fractionation Efficiency | 27 |
Copyright | |
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acetone acid Acta applied average molecular weight Benzene Biochem calculated Cantow cell cellulose centrifugal Chem chemical inhomogeneity Chim chloride chromatography Claesson column components composition constant copolymers cross-linked crystalline cyclohexane density dependence Desreux determined diffusion dilute distribution curve distribution function effect elution equation equilibrium experimental Extraction Flory flow curve Giesekus gradient graft copolymer heterogeneity high polymers increasing integral distribution investigated linear liquid low molecular weight Makromol measurements Methanol methyl methacrylate mixture molecular weight distribution molecules monomer nonsolvent obtained optical parameters particles phase Phys plot polydispersity polyethylene polymer concentration Polymer Sci polymer solution polymerization polypropylene polystyrene polyvinyl acetate polyvinyl alcohol procedure ratio refractive index report of Farbenfabriken sample Section sedimentation coefficient separation shear shown in Fig solubility solvent solvent-nonsolvent species Styrene technique temperature theoretical tion titration Toluene turbidity turbidity curves ultracentrifuge values vinyl acetate viscosity volume weight fraction