Zobrazeno 1 - 10
of 71
pro vyhledávání: '"G.L. Berestneva"'
Publikováno v:
Journal of Polymer Science: Polymer Symposia. 47:25-34
This paper presents the results of investigations on thermal polycyclocondensation of polyhydrazides to corresponding poly-1,3,4-oxadiazoles. A limiting character of conversion is associated with the mobility of polymeric chains due to the fact that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5940a33b12b2c2909c195010d9eb3ef
https://doi.org/10.1002/polc.5070470106
https://doi.org/10.1002/polc.5070470106
Autor:
Alexander L. Rusanov, V.V. Korshak, G.L. Berestneva, A.M. Berlin, Pavel V. Petrovskii, P.Sh. Ormotsadze, F.I. Adyrkhayeva
Publikováno v:
Polymer Science U.S.S.R.. 23:1902-1908
An identification method for the prepolymer of polynaphthoylenebenzimidazole (PNBI) has been worked out on the basis of 13C—{1H} spectroscopy; a quantitative evaluation of the amino-amide and naphthoylenebenzimidazole fragment contents in the polym
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e74cc4a3fc66732265f09ebef416fa8c
https://doi.org/10.1016/0032-3950(81)90069-1
https://doi.org/10.1016/0032-3950(81)90069-1
Publikováno v:
Polymer Science U.S.S.R.. 21:1030-1037
A study was made of the mechanism of formation of poly[benzdi(pyrimidobenzimidazole)]—a new heat resistant polymer of “black ladder type”, obtained by solid phase, thermal cyclization of macromolecules, polyamides with benzimidazol-2-yl groups
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f85397d79cd942f9a6ff8d6b8348a39a
https://doi.org/10.1016/0032-3950(79)90210-7
https://doi.org/10.1016/0032-3950(79)90210-7
Autor:
B.I. Zhizdyuk, V.V. Korshak, L. P. Myasnikova, L.M. Bronshtein, Alexander L. Rusanov, A.S. Chegolya, G.L. Berestneva, V.A. Marikhin
Publikováno v:
Polymer Science U.S.S.R.. 26:35-39
The formation of the crystalline structure in oriented samples of the polyamidohydrazides and polyamido-1, 3, 4-oxadiazoles has been studied by the method of wide angle X-ray diffraction.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a64961836f20b33f3068edadd7bb0d3b
https://doi.org/10.1016/0032-3950(84)90278-8
https://doi.org/10.1016/0032-3950(84)90278-8
Publikováno v:
Polymer Science U.S.S.R.. 21:20-27
The heat capacites of the dihydrazide of 4′,4″-diphenylenephtalidocarboxyclic acid (DH) and of terephthalyl chloride (TC) at 60–300°K, as well as of the two polymers: poly-(p,p′-diphenylenephthalido)-hydrazide (PH) and poly-(p,p′-diphenyle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83033d119352580d9c24d38fa3152993
https://doi.org/10.1016/0032-3950(79)90311-3
https://doi.org/10.1016/0032-3950(79)90311-3
Publikováno v:
Polymer Science U.S.S.R.. 17:2200-2207
Results are presented of an investigation of aromatic, rigid chain poly-1,3,4-oxadiazoles containing cardic groupings in the form of phthalide-ring side groups. It is shown that solution of these polymers occurs because the energy of interaction betw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6602d15a7843d5f383d6d2aa48d40d28
https://doi.org/10.1016/0032-3950(75)90455-4
https://doi.org/10.1016/0032-3950(75)90455-4
Autor:
N. Lekishvili, A.M. Berlin, G.L. Berestneva, M.P. Razmerova, Alexander L. Rusanov, A.Ye. Chesnokova, N.Sh. Ormotsadze, V.V. Korshak
Publikováno v:
Polymer Science U.S.S.R.. 25:735-741
A comparative study was made of regularities of intramolecular thermal polycyclodehydration of poly-N-(o-aminophenyl)-naphthalimide and its low-molecular weight analogue—N-(o-aminophenyl)-naphthalimide. An analysis was carried out of causes hinderi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23423216fc943208987c695fc6d0cae9
https://doi.org/10.1016/0032-3950(83)90259-9
https://doi.org/10.1016/0032-3950(83)90259-9
Autor:
A. V. Volokhina, I.V. Zhuravleva, V.V. Korshak, A.B Raskina, G.L. Berestneva, D.V Bibileishvili, L. I. Komarova
Publikováno v:
Polymer Science U.S.S.R.. 27:2054-2060
The authors have studied the pattern of the chemical conversions occurring in poly-p-p′terephthaloyl-N-methylhydrazide-1,3,4-oxadiazoles in response on heating over a wide temperature range. It has been established that the N-methylhydrazide fragme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95c449c254f6ac78ca0cf01a92e60a9b
https://doi.org/10.1016/0032-3950(85)90485-x
https://doi.org/10.1016/0032-3950(85)90485-x
Autor:
Korshak Vasilij, A.N. Mochalov, G.L. Berestneva, G.P. Kamelova, I.B. Rabinovich, S.A. Astaf'ev, N.V. Karyakin
Publikováno v:
Polymer Science U.S.S.R.. 17:2174-2181
The enthalpy, entropy and Gibbs free energy of thermal cyclization of poly(p,p′-diphenyleneoxido)hydrazide (PA) to poly-(p,p′-diphenylenoxido)-1,3,4-oxadiazole (POD), have been determined. For this purpose the heat capacity of PH and POD was stud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a548ce1c597238b7a11caaa1a704d2b0
https://doi.org/10.1016/0032-3950(75)90451-7
https://doi.org/10.1016/0032-3950(75)90451-7
Autor:
G.L. Berestneva, Yu.Ye. Doroshenko, Yu. B. Zimin, A.N. Lomteva, V.V. Korshak, L. V. Postnikova
Publikováno v:
Polymer Science U.S.S.R.. 20:806-810
Gas chromatography was used to examine kinetic relations of thermal solid phase ring formation of heterochain polymers. It was found possible to use this method for the study of single stage and two stage reactions of ring formation when producing he
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66ae65c1cd653f0d4ad83b737df38e5f
https://doi.org/10.1016/0032-3950(78)90173-9
https://doi.org/10.1016/0032-3950(78)90173-9