Zobrazeno 1 - 10 of 97 pro vyhledávání: '"V.A. Shevelev"'
1
Proton magnetic relaxation in a monomer-oligomer mixture based on unsaturated esters
Autor: V.A. Shevelev, S. V. Lukasov, Boris Zaitsev, Ye.R. Gasilova
Publikováno v: Polymer Science U.S.S.R.. 32:2270-2275
The spin-lattice and spin-spin proton magnetic relaxation of monomer-oligomer mixtures of unsaturated aromatic esters having methacrylate and/or vinyl end groups are studied as a function of temperature. It is shown that there are two proton sub-syst
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::803aadac574a4d265a8230eb0a4514ec
https://doi.org/10.1016/0032-3950(90)90266-9
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2
Investigation of gelation in poly(hexadecyl acrylate) solutions
Autor: L.L. Burshtein, V.A. Shevelev, T.I. Borisova, A.I. Artyukhov, D.A. Dmitrochenko
Publikováno v: Polymer Science U.S.S.R.. 17:2939-2946
A study was made of characteristic effects of thermally reversible gelation on the dielectric properties, electrical conductivity, proton magnetic relaxation properties and self diffusion in the system polydecadecyl acrylate-n-decane with differing r
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9fd860999df9f2d4b82be9416d18c13f
https://doi.org/10.1016/0032-3950(75)90435-9
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3
On the relationship between molecular structure and proton magnetic relaxation in polyethylene melts
Autor: M.P. Platonov, V.A. Shevelev, Ye.R. Yarda, G.P. Belov
Publikováno v: Polymer Science U.S.S.R.. 18:713-721
A study has been made of relaxation mechanisms of longitudinal and transverse proton magnetization in PE melts. It was found that the transverse relaxation is of a non-exponential character, the mean relaxation time 〈 T 2 〉 depending on molecular
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6d0d744787778387fce95945948e9fc3
https://doi.org/10.1016/0032-3950(76)90272-0
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6
Study of polyethylene by rapid sedimentation and nuclear relaxation
Autor: G.P. Belov, V.A. Shevelev, M.P. Platonov
Publikováno v: Polymer Science U.S.S.R.. 16:2177-2183
High and low density polyethylenes (HDPE and LDPE) were studied by rapid sedimentation and nuclear magnetic relaxation. A correlation was established between results obtained by studies of PE by various methods. It was shown that HDPE specimens of di
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c17902824aa209b9c78296c3e1b05485
https://doi.org/10.1016/0032-3950(74)90292-5
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10
Study of local forms of thermal motion causing spin-lattice relaxation in polymers
Autor: V.A. Shevelev, G.P. Mikhailov
Publikováno v: Polymer Science U.S.S.R.. 9:2762-2771
Nuclear spin-lattice relaxation in polymers in the glassy state is due to the presence of local forms of molecular mobility, i.e. to the mobility of individual groups of atoms in the side- or main chains [1–4]. In a previous paper [5] a study was m
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::25f7a1db807b91603c4436bc83bf74fa
https://doi.org/10.1016/0032-3950(67)90379-6
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