Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Yu.I. Mitchenko"'
Publikováno v:
Endocrinology: News, Opinions, Training. 9:74-76
Publikováno v:
Polymer Science U.S.S.R.. 32:6-11
The results of the study of ultrahigh molecular mass polyethylene gel fibres are discussed. Mercury porometry was used to determine the total volume of the pores. Contraction phenomena on evaporation of occluded liquids appreciably influence the stru
Autor:
V. G. Kulichikhin, E.M. Antipov, S. A. Kuptsov, E.V. Popova, V.I. Kuzub, M.Kh. Mirdzhanov, Yu.I. Mitchenko
Publikováno v:
Polymer Science U.S.S.R.. 32:76-82
The behaviour of semi-dilute solutions of superhigh molecular polyethylene under shear flow conditions and the stretching of the xerogels obtained from them are studied. The solutions have a high degree of structuring, which results in viscoplastic b
Publikováno v:
Polymer Science U.S.S.R.. 22:2605-2614
NMR study was made of molecular interactions of LiCl in solutions of polyamidohydrazides in aprotonic amide solvents. It was noted that the salt introduced interacts with a polymer molecule. It was established that for polymer solutions in establishi
Publikováno v:
Polymer Science U.S.S.R.. 31:406-412
IR spectroscopic methods have been used to study structural-chemical transformations in the surface of PETP and PP under the effect of a gas discharge. It is shown that the improvement in wetability is caused, in the first instance, by a structural-c
Publikováno v:
Polymer Science U.S.S.R.. 25:861-869
Spectroscopic methods have shown that molecular contacts with various degrees of complexity occur in solutions of poly- m -phenylene isophthalamide: these range from the formation of single hydrogen bonds to aggregative contacts of various forms. Str
Publikováno v:
Polymer Science U.S.S.R.. 17:2841-2847
Calorimetry, dilatometry, IR, NMR and ESR spectroscopy, and optical polarization microscopy have been used in the study of the mechanism of PETP transition from the amorphous to the orientated state during stretching. A small deformation stress has b
Publikováno v:
Polymer Science U.S.S.R.. 26:2848-2855
Nuclear magnetic resonance, IR spectroscopy and solution calorimetry have been used to investigate solutions of poly- m -phenylene isophthalamide in aprotonic solvents in the presence of various salts. It has been shown that salts capable of existing
Autor:
L.M. Bronshtein, Yu.I. Mitchenko, A.S. Chegolya, Alexander L. Rusanov, B.I. Zhizdyuk, V.V. Korshak
Publikováno v:
Polymer Science U.S.S.R.. 22:1185-1191
A study has been made of the molecular influence of solvents on electron densities of reactive groups of p-aminobenzoic acids hydrazide in the synthesis of poly-amido hydrazides. Interactions of the latter with various solvents have been investigated
Publikováno v:
Polymer Science U.S.S.R.. 30:1988-1992
Mass-spectrometry was used to analyse the process of liberation of volatile products in PA degradation in gas discharge. The energy transmitted by gas particles to the macromolecules migrates in the polymer chain and is localized on the weakest chemi