Zobrazeno 1 - 10
of 22
pro vyhledávání: '"N.N. Molotkova"'
Publikováno v:
International Polymer Science and Technology. 31:37-41
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::411f095fe2b8abdd3ff86f95b4923e84
https://doi.org/10.1177/0307174x0403100808
https://doi.org/10.1177/0307174x0403100808
Autor:
V.P. Pshenitsyna, N.N. Molotkova, I.M. Papisov, A.A. Litmanovich, K. I. Bolyachevskaya, S.V. Markov
Publikováno v:
Polymer Science U.S.S.R.. 33:562-567
The chemical reactions occurring during thermolysis of polycomplexes and polycomplex composites obtained from the matrix polycondensation of urea and formaldehyde in the presence of polyacrylic acid have been investigated. Dehydration and decarboxyla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3daa03a5cc9ad75d62d3ef0bff76ccb0
https://doi.org/10.1016/0032-3950(91)90259-s
https://doi.org/10.1016/0032-3950(91)90259-s
Autor:
N.N. Molotkova, A.N. Pukhovitskaya, V.P. Pshenitsyna, E.I. Nikishina, Ye.S. Potekhina, L.N. Smirnova
Publikováno v:
Polymer Science U.S.S.R.. 24:1974-1979
The IR spectra of urea-formaldehyde oligomers synthesized in the presence of hexamethylene tetramine (HMTA) and ammonia have been investigated. Absorption bands relating to the triazinone ring have been identified, and the number of rings in the olig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb0c82bc13fc0d50d19f9bf700f2c087
https://doi.org/10.1016/0032-3950(82)90156-3
https://doi.org/10.1016/0032-3950(82)90156-3
Publikováno v:
Polymer Science U.S.S.R.. 17:154-165
A study was made of kinetic regularities of the evolution of the volatile products CO, CO 2 , water, H 2 , and nitrogen, as well as the absorption of oxygen during the high temperature oxidation of polypyromellitimide. It is shown that the accumulati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1db09bf4ac652cb8dfc469f49cb15754
https://doi.org/10.1016/0032-3950(75)90229-4
https://doi.org/10.1016/0032-3950(75)90229-4
Autor:
B.Ya. Aksel'rod, M.D. Frenkel, I.M. Kochnov, Ye.Ye. Tikhomirova, N.N. Molotkova, I.M. Gurman, Ye.S. Potekhina, V.P. Pshenitsyna, Ye.S. Lagucheva, N.S. Maizel
Publikováno v:
Polymer Science U.S.S.R.. 21:2145-2152
The IR spectra of a number of cured urea-formaldehyde oligomers have been studied. It was found that in curing of samples with urea: formaldehyde ratios of 1 : 2 and 1 : 1·8, in addition to intermolecular condensation of methylol and imine grups, in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2bf9ef03ebdb4e3b86c0afb348709eb
https://doi.org/10.1016/0032-3950(79)90152-7
https://doi.org/10.1016/0032-3950(79)90152-7
Publikováno v:
Journal of Applied Spectroscopy. 29:1098-1101
In the IR spectra of all types of amides there are absorption bands called the Amide I (1650 cm-*), associated with CO stretching vibrations, and Amide II (1550 cm -I) , associated with stretching vibrations of the C--N groups, and deformation vibrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bf8a0ac3502ec8aaf04672628b0171a
https://doi.org/10.1007/bf01124868
https://doi.org/10.1007/bf01124868
Autor:
L.N. Smirnova, A.N. Pukhovitskaya, V.P. Pshenitsyna, N.N. Molotkova, N.D. Eksanova, Ye.S. Potekhina
Publikováno v:
Polymer Science U.S.S.R.. 26:1638-1641
The cure of urea formaldehyde oligomers of cyclic structure has been investigated by infrared spectroscopy. Hydrolytic splitting of some of the triazinone rings containing NH carbamide fragments takes place during curing in the presence of acid catal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1cc621cb0616c24a6bf99fa0bbe417d
https://doi.org/10.1016/s0032-3950(84)80052-0
https://doi.org/10.1016/s0032-3950(84)80052-0
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