Polymer FractionationManfred J. R. Cantow |
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Page 72
... polypropylene deposited on sand by cooling from 126 ° C to room temperature in one hour ( O ) and in six hours ( ○ ) [ 4 ] . curves obtained on a sample of isotactic polypropylene when 1 hour and 6 hours were taken for deposition by ...
... polypropylene deposited on sand by cooling from 126 ° C to room temperature in one hour ( O ) and in six hours ( ○ ) [ 4 ] . curves obtained on a sample of isotactic polypropylene when 1 hour and 6 hours were taken for deposition by ...
Page 75
... polypropylene , separa- ting the boiling - ether - soluble and boiling - heptane - soluble portions . The latter fraction , with the heptane insoluble residue , was further fractionated for a subsequent study of physical and mechanical ...
... polypropylene , separa- ting the boiling - ether - soluble and boiling - heptane - soluble portions . The latter fraction , with the heptane insoluble residue , was further fractionated for a subsequent study of physical and mechanical ...
Page 86
... polypropylene on the support from a solvent - nonsolvent mixture rather than from a good solvent [ 4 ] . Mendelson [ 50 ] found unsatisfactory fractionation of crystal- line polypropylene when it was deposited from a good solvent and ...
... polypropylene on the support from a solvent - nonsolvent mixture rather than from a good solvent [ 4 ] . Mendelson [ 50 ] found unsatisfactory fractionation of crystal- line polypropylene when it was deposited from a good solvent and ...
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