Now showing items 21-30 of 37
Zone fractionation of cyclohexane-rich polystyrene–cyclohexane solid solutions This investigation was supported by a National Science Foundation Grant. Presented before the International Symposium on Macromolecular Chemistry; I.U.P.A.C., Montreal, Canada, July 1961.
(Wiley Subscription Services, Inc., A Wiley Company, 1964-03)
Experimental results on the application of zone melting techniques to dilute solutions of polystyrene in cyclohexane under various operating conditions are reported together with observations on static solidification tests ...
Heterophase polymerization of 4- vinylpyridine with butyllithium
(John Wiley & Sons, Inc., 1964-05)
The butyllithium-initiated polymerization of 4-vinylpyridine in hydrocarbon media proceeded by an anionic addition mechanism. The colorless, soluble reactants rapidly formed a granular, intensely colored, polymer precipitate ...
Polymerization of styrene with TiCl 3 –Al(C 2 H 5 ) 3 and VCl 3 –Al(C 2 H 5 ) 3 catalysts
(John Wiley & Sons, Inc., 1964-12)
The polymerization of styrene was studied in benzene solution with two catalyst systems: TiCl 3 –Al(C 2 H 5 ) 3 and VCl 3 –Al(C 2 H 5 ) 3 . The reaction was carried out at atmospheric pressure, temperatures of 40–70°C., ...
Solution and bulk properties of branched polyvinyl acetates part III--Intrinsic viscosity and light scattering measurements
(Elsevier, 1964)
Light scattering and intrinsic viscosity measurements have been made on three different series of vinyl acetate polymers, one linear and two branched. One of the branched series was obtained by fractionation of a high ...
Solution and bulk properties of branched polyvinyl acetates part II--Synthesis of some branched polyvinyl acetates
(Elsevier, 1964)
A series of comb-shaped branched polyvinyl acetates has been prepared by a graft polymerization technique. Branches of a specified average chain length have been grafted to a linear backbone polymer with a narrow molecular ...
Solution and bulk properties of branched polyvinyl acetates IV--Melt viscosity
(Elsevier, 1964)
The melt viscosities of some randomly branched and some comb shaped branched polyvinyl acetate fractions were compared to the viscosities of linear polymer over a range of molecular weights. The melt viscosity of the ...
Spectroscopic studies of Lewis acid-base complexes--I : Vibrational spectra and assignments for trimethylymine complexes of boron halides
(Elsevier, 1964-10)
Infrared and Raman spectra of 1:1 complexes of trimethylamine with boron trifluoride, boron trichloride and boron tribromide have been obtained in the solid state. Samples studied included those isotopically enriched in ...
Purification of rat-liver [gamma]-hydroxyglutamate transminase and its probable identity with glutamate-aspartate transminase
(Elsevier, 1964-03-09)
1. 1. An enzyme which catalyzes the transamination of [gamma]-hydroxyglutamate has been purified over 300-fold from rat-liver homogenates.2. 2. The following observations strongly suggest that [gamma]-hydroxyglutamate ...
The adsorption of nitrogen-methane on molecular sieves
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1964-01)
No Abstract.
Glutamine synthetase V. Dependence of its sulfhydryl requirement on organic ligands and metal ions
(Elsevier, 1964-07-08)
A partially purified preparation of glutamine synthetase (-glutamate: ammonia ligase (ADP), EC 6.3.1.2) has been obtained from rat liver. The enzyme preparation showed no activity in the absence of Mg2+; Mn2+ could not ...