Fractionation of Synthetic Polymers: Principles and PracticesLu-ho Tung |
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Page 247
... refractionation , P ( closed circle ) the first four fractions were subdivided into 20 equal subfractions , p 0 , v ° = 1 % , P , = 1/3 [ 21 ] . = p Р P Various refractionation procedures by the precipitational method have been proposed ...
... refractionation , P ( closed circle ) the first four fractions were subdivided into 20 equal subfractions , p 0 , v ° = 1 % , P , = 1/3 [ 21 ] . = p Р P Various refractionation procedures by the precipitational method have been proposed ...
Page 248
... refractionation . For the sake of convenience , the successive refractionation procedure , consisting of a number of primary fractions i and of subfractions j for each fraction , will be termed ( i ~ j ) type refractionation method ...
... refractionation . For the sake of convenience , the successive refractionation procedure , consisting of a number of primary fractions i and of subfractions j for each fraction , will be termed ( i ~ j ) type refractionation method ...
Page 249
... refractionation is considerably lower than that effective during the fractionation process . Thus , the ( i ~ 1 ) type refractionation method is not strictly the same as compared to the methods of Schulz et al . and Flory . The ...
... refractionation is considerably lower than that effective during the fractionation process . Thus , the ( i ~ 1 ) type refractionation method is not strictly the same as compared to the methods of Schulz et al . and Flory . The ...
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