Polymer FractionationManfred J. R. Cantow |
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Page 258
... versus time and ( b ) an expansion plot of In r - In r ' versus time for the sedimentation of a 0.25 gm 100 ml solution of polystyrene S105 in cyclohexane at 59.780 rpm and 35 ° C . In r ' 1.79218 + 2.10927 × 105t ; ( d In r / dt ) , o ...
... versus time and ( b ) an expansion plot of In r - In r ' versus time for the sedimentation of a 0.25 gm 100 ml solution of polystyrene S105 in cyclohexane at 59.780 rpm and 35 ° C . In r ' 1.79218 + 2.10927 × 105t ; ( d In r / dt ) , o ...
Page 321
... versus om , or n ' versus D , or n ' versus am . As it is necessary to plot several orders of magnitude in both D and am to ascertain the initial as well as the final Newtonian range no and 7 , in most cases plots of log D versus log σ ...
... versus om , or n ' versus D , or n ' versus am . As it is necessary to plot several orders of magnitude in both D and am to ascertain the initial as well as the final Newtonian range no and 7 , in most cases plots of log D versus log σ ...
Page 394
... versus M on a log - log graph paper will then give a straight line . From the slope and position of the straight line the parameters y and z can be determined . Figure 11 shows 10 8 6 2 I LOG I - C ( M ) 0.8 0.6 0.4 0.25 0.1 0.08 0.06 ...
... versus M on a log - log graph paper will then give a straight line . From the slope and position of the straight line the parameters y and z can be determined . Figure 11 shows 10 8 6 2 I LOG I - C ( M ) 0.8 0.6 0.4 0.25 0.1 0.08 0.06 ...
Contents
PREFACE | 3 |
Fractionation Theory | 10 |
Fractionation Efficiency | 27 |
Copyright | |
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according acetate addition amount applied approximation average average molecular weight calculated cell Chem chemical chromatography coefficient column components composition concentration constant containing copolymers curve dependence described determined diffusion discussed distribution curve effect efficiency elution equation equilibrium example experimental experiments Extraction flow fractionation function give given gradient higher increasing inhomogeneity initial integral light limited liquid lower Makromol material means measurements methacrylate method MICHIGAN mixture molecular weight distribution molecules Nature nonsolvent observed obtained operating parameters particles phase Phys plot polydispersity polyethylene Polymer Sci polymerization polystyrene polyvinyl possible precipitation prepared present procedure range ratio Reference relation respect sample sedimentation separation shown shows solubility solution solvent structure Styrene Table technique temperature theoretical theory tion titration turbidimetric turbidity usually values viscosity volume