Polymer FractionationManfred J. R. Cantow |
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Page 258
... plot of ln r versus t is a straight line with a slope of sw2 . Such a plot , shown in Fig . 3 ( a ) for the sedimentation of a polystyrene JUI 1.88 ( a ) 1.84 1 1.80- 0.002 0.001 ( b ) O d ( in r - In r ' ) / dt = 0.150x10 2 3 1 x 103 ...
... plot of ln r versus t is a straight line with a slope of sw2 . Such a plot , shown in Fig . 3 ( a ) for the sedimentation of a polystyrene JUI 1.88 ( a ) 1.84 1 1.80- 0.002 0.001 ( b ) O d ( in r - In r ' ) / dt = 0.150x10 2 3 1 x 103 ...
Page 325
... plot must be a measure of the polydispersity of the sample among many other things , of course . It has been shown , that for moderately concentrated solutions , a plot of log n ' versus σm yields straight lines over a range of several ...
... plot must be a measure of the polydispersity of the sample among many other things , of course . It has been shown , that for moderately concentrated solutions , a plot of log n ' versus σm yields straight lines over a range of several ...
Page 394
Manfred J. R. Cantow. + A plot of [ n ] versus M / M thus should assume a straight line on a log - log graph paper if the proper value of b is selected . The slope of such a plot should be identical to a in the Mark - Houwink equation ...
Manfred J. R. Cantow. + A plot of [ n ] versus M / M thus should assume a straight line on a log - log graph paper if the proper value of b is selected . The slope of such a plot should be identical to a in the Mark - Houwink equation ...
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