Now showing items 31-40 of 53
Configurational characteristics of ethylene-vinyl chloride copolymers
(Elsevier, 1973-11)
Rotational isomeric state theory has been used to calculate mean-square unperturbed dimensions r2> and dipole moments 2> of ethylene-vinyl chloride copolymers as a function of chemical composition, chemical sequence ...
Fatigue craze initiation in polycarbonate: study by small-angle X-ray scattering
(Elsevier, 1994-09)
The structural changes that occur during the incubation stage of tensile fatigue failure of glassy polycarbonate are investigated by means of small-angle X-ray scattering. The results are interpreted as the formation of ...
Dimensions of poly(trimethylene oxide) chains in a theta-solvent
(Elsevier, 1976-08)
Fractions of poly(trimethylene oxide) ---CH2)3---]x of relatively high degree of polymerization x were studied in liquid-liquid phase equilibria in the poor solvent cyclohexane. The results thus obtained indicate that the ...
Preparation and characterization of maleimide-terminated poly(arylene ether sulfone) oligomers of various molecular weights
(Wiley Subscription Services, Inc., A Wiley Company, 1991-11-20)
A new variation in the bismaleimide (BMI) resin family, maleimide-terminated poly(oxy-1,4-phenylene sulfonyl-1,4-phenylene) oligomers, has been synthesized. The preparation of oligomers ( n = 1–12) is described in this ...
Characterization of the compaction and sintering of hydroxyapatite powders by mercury porosimetry
(Elsevier, 1974-04)
Mercury porosimetry was used to measure the bulk and real densities, pore volumes and pore size distributions of compacts of hydroxyapatite before and after sintering. The hydroxyapatites were prepared by two different ...
A computer program for pore volume and pore area distribution calculations from mercury porosimeter data on particulate or porous materials
(Elsevier, 1972-07)
A computer program in Fortran IV is described for rapidly determining pore size and pore area distribution calculations from the high pressure mercury porosimeter data. The listing of the program is reproduced as well as ...
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 ...
Synthesis and homopolymerization studies of vinylimidazolium salts
(Elsevier, 1973-12)
The preparations and characterizations of several monomeric vinylimidazolium salts are presented from the quaternizations of 1-vinylimidazole and 2-methyl-1-vinylimidazole with n-alkyl iodides and with dimethyl sulphate. ...
A quantitative adhesion test for thin polymer films on silicon substrates
(Wiley Subscription Services, Inc., A Wiley Company, 1991-10-05)
The standard 90° peel test was modified in order to apply it to testing adhesion of thin polymer films to surfaces of silicon substrates, such as the silicon nitride passivation layer used in our solid-state chemical ...
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 ...