Fractionation of Synthetic Polymers: Principles and PracticesLu-ho Tung |
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Page 299
... cyclohexane was poured directly into a temperature gradient column . Selective precipitation did take place . Another study reports [ 15 ] the fractionation of polystyrene with a single solvent , cyclohexane , using successively ...
... cyclohexane was poured directly into a temperature gradient column . Selective precipitation did take place . Another study reports [ 15 ] the fractionation of polystyrene with a single solvent , cyclohexane , using successively ...
Page 300
... Cyclohexane Cyclohexane M range 1.8 x 104- 1.0 x 106 SS 5 → 35 Cyclohexane 50-400 ml / hr 2.6 cm i.d. 12 g Glass wool A 5.46 x 105 2.6 BW 47 - 20 B 2.85 x 105 2.4 and C 4.74 x 105 3.3 GE 30 MEK MeOH 30-370 ml / hr 1 g 0.1 mm 2.82 cm ...
... Cyclohexane Cyclohexane M range 1.8 x 104- 1.0 x 106 SS 5 → 35 Cyclohexane 50-400 ml / hr 2.6 cm i.d. 12 g Glass wool A 5.46 x 105 2.6 BW 47 - 20 B 2.85 x 105 2.4 and C 4.74 x 105 3.3 GE 30 MEK MeOH 30-370 ml / hr 1 g 0.1 mm 2.82 cm ...
Page 429
... Cyclohexane Methanol ( ? ) 52 Cyclohexanol 9 , 227 Dioxane Methanol 52 Methyl- 188 cyclohexane Toluene Methanol 5 , 178 Polysulfones Chloroform Methanol Poly ( vinyl Acetone Water acetate ) Poly ( N - vinyl- ? ? 145 carbazol ) Poly ...
... Cyclohexane Methanol ( ? ) 52 Cyclohexanol 9 , 227 Dioxane Methanol 52 Methyl- 188 cyclohexane Toluene Methanol 5 , 178 Polysulfones Chloroform Methanol Poly ( vinyl Acetone Water acetate ) Poly ( N - vinyl- ? ? 145 carbazol ) Poly ...
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