Polymer FractionationManfred J. R. Cantow |
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Page 44
... PROCEDURE The usual procedure for fractional precipitation is as follows . The polymer sample is dissolved in a suitable solvent ( concentration ranges are discussed in Section 1 , B , 3 ) and an appropriate nonsolvent is added ...
... PROCEDURE The usual procedure for fractional precipitation is as follows . The polymer sample is dissolved in a suitable solvent ( concentration ranges are discussed in Section 1 , B , 3 ) and an appropriate nonsolvent is added ...
Page 106
... procedure Baker and Williams [ 1 ] added 300 mg of polymer dissolved in 10 ml of methyl ethyl ketone , the good solvent in the fractionation , to 30 gm of glass beads and evaporated the solvent using a stream of hot air . The beads were ...
... procedure Baker and Williams [ 1 ] added 300 mg of polymer dissolved in 10 ml of methyl ethyl ketone , the good solvent in the fractionation , to 30 gm of glass beads and evaporated the solvent using a stream of hot air . The beads were ...
Page 309
... procedure is a long and tedious one when low concentrations of solute are used , however . Golub [ 7 ] pursued Spencer's [ 5 ] summative procedure based on cumula- tive precipitates , using GR - S as their polymer system . These data ...
... procedure is a long and tedious one when low concentrations of solute are used , however . Golub [ 7 ] pursued Spencer's [ 5 ] summative procedure based on cumula- tive precipitates , using GR - S as their polymer system . These data ...
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