Fractionation of Synthetic Polymers: Principles and PracticesLu-ho Tung |
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Page 214
... polymer , e.g. , the Wesslau - type polymer with X / X5 ( not shown ) . In SSF , XX of the fractions decreases rapidly with increases W W n W = in X for the initial stages of fractionation and the absolute magnitude of the initial slope ...
... polymer , e.g. , the Wesslau - type polymer with X / X5 ( not shown ) . In SSF , XX of the fractions decreases rapidly with increases W W n W = in X for the initial stages of fractionation and the absolute magnitude of the initial slope ...
Page 217
Principles and Practices Lu-ho Tung. W W x = 300 and a Wesslau - type polymer with X / X = 5 , X = 300 were fractionated by means of SSF and SPF into 5-50 equal fractions W ( i.e. , nt = W n W 5-50 ) from their 1 and 5 % solutions ...
Principles and Practices Lu-ho Tung. W W x = 300 and a Wesslau - type polymer with X / X = 5 , X = 300 were fractionated by means of SSF and SPF into 5-50 equal fractions W ( i.e. , nt = W n W 5-50 ) from their 1 and 5 % solutions ...
Page 222
... Wesslau - type distributions . For the Wesslau - type polymer , the value of X / X of the polymer in the precipitate is not always less than that in the supernatant . It is found that p is 0.50 ± 0.01 for the Schulz - Zimm - type polymers ...
... Wesslau - type distributions . For the Wesslau - type polymer , the value of X / X of the polymer in the precipitate is not always less than that in the supernatant . It is found that p is 0.50 ± 0.01 for the Schulz - Zimm - type polymers ...
Common terms and phrases
adsorption average molecular weight Benzene binary binodals Butanone calculated chain Chem chemical potential chromatogram chromatography cloud-point curve coefficient column component constant critical point cyclohexane decreases dependence determined effect elution equation equilibrium experimental Flory Flory-Huggins Flory-Huggins theory fractionation order fractions obtained free energy function given gradient graft copolymers heterogeneous homopolymers increases interaction parameter intrinsic viscosity Kamide LCST linear Makromol methacrylate Methanol method mixture molecular weight distribution molecules nonsolvent obtained by SPF original polymer phase diagrams phase separation plot poly polydispersity polymer concentration polymer solutions polymer-lean phase polymer-rich phase polymerization polystyrene precipitation ratio refractionation sample Schulz Schulz method Schulz-Zimm distribution shown in Fig solubility solvent SPF and SSF spinodal styrene technique theoretical theory thermodynamic titrations turbidity titrations virial virial coefficient viscosity volume fraction weight fraction Wesslau distribution Wesslau-type polymer XOXO zone spreading