Zobrazeno 1 - 10
of 95
pro vyhledávání: '"G.P. Andrianova"'
Publikováno v:
Polymer Science U.S.S.R.. 32:1169-1174
The character of the microporous structure of systems based on linear polyethylene, obtained by successive high temperature treatment in m-xylene and DMFA with subsequent crystallization of the system at room temperature is studied by small-angle X-r
Publikováno v:
Polymer Science U.S.S.R.. 26:1840-1847
The article describes the formation of porous systems based on linear PE and isotactic PP by treating the initial monolithic films with solvent at raised temperature without deformation. It is shown that the non-oriented porous films obtained are cha
Publikováno v:
Polymer Science U.S.S.R.. 20:3114-3121
Melt viscosity t/0 was measured at 463°K, glass temperature Tg, specific volume Ve and compressibility P0 were determined in the temperature range of 385 –470°K for narrow and broad fractions of initial polystyrene samples and samples obtained by
Publikováno v:
Polymer Science U.S.S.R.. 26:2491-2495
A new method is described, which is used for determining kinetics of water vapour permeability and water vapour diffusion through porous and monolithic polymer materials and membranes. A report is given of methods of measuring and calculating water v
Publikováno v:
Polymer Science U.S.S.R.. 24:613-619
The solubility of polybutamide (PBA), the viscosities of its dilute solutions in sulphuric and formic acids, in aqueous solutions of zinc chloride, m -cresol, and its stability in these solvents have been studied. Compounds having a pK a ⩽10–12 a
Autor:
D.A. Topchiev, G.P. Andrianova
Publikováno v:
Polymer Science U.S.S.R.. 16:2779-2795
Publikováno v:
Polymer Science U.S.S.R.. 19:1418-1426
The orientational crystallization of PETPh has been investigated by calorimetry and X-ray structural analysis for the stretching of the polymer at various temperatures and rates of extension. The temperature boundaries of the region in which crystall
Autor:
S.I. Pakhomov, V.V. Shilov, Ye.I. Oranskaya, Yu.P. Gomza, M.G. Felin, Yu.S. Lipatov, G.P. Andrianova
Publikováno v:
Polymer Science U.S.S.R.. 29:19-26
Wide and small angle X-ray scatter in the systems porous polyethylene-low molecular weight liquid has been used to investigate the features of supramolecular organization of the matrix of porous polyethylene and establish the character of the micropo
Publikováno v:
Polymer Science U.S.S.R.. 18:2644-2652
The heat of neck formation was studied by calorimetry during the stretching of the amorphous and crystallizing PETP under various conditions. Most of the attention was given to cold-stretching and to the heats associated with the spontaneous vibratio
Publikováno v:
Polymer Science U.S.S.R.. 16:811-820
It is shown that addition of polyethylsiloxane fluid to polypropylene brings about change in both the mechanical properties and the mechanism of deformation of spherulitic films of the polymer. Elongations of the order of 300% can be attained at room