Zobrazeno 1 - 10
of 70
pro vyhledávání: '"A.V. Purkina"'
Pecularities of Liquid Crystalline Order Formation in Polyesters with Irregular Chemical Composition
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 299:199-203
Formation of liquid crystalline (LC) order in thermotropic main-chain random copolymers (containing mesogens of one type and spacers of different lengths) were investigated by IR spectroscopy, DSC, X-ray and polarized microscopy methods. It was demon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbec00781f99a8ee479b67feae7cf8be
https://doi.org/10.1080/10587259708041995
https://doi.org/10.1080/10587259708041995
Publikováno v:
Macromolecular Symposia. 113:67-80
Conformational transitions in thermotropic main-chain polymers of complex chemical structure including homopolymers with possibility of conformational transformations in mesogens and random copolymers (CPLs) containing mesogens of the same type and s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e30cacd7e4794ef21e4295f0712972a7
https://doi.org/10.1002/masy.19971130109
https://doi.org/10.1002/masy.19971130109
Autor:
A.V. Purkina, Natalija A. Petukhova, Eugenij F. Panarin, Victor M. Denisov, Michael V. Solovskij
Publikováno v:
Macromolecular Chemistry and Physics. 197:2035-2046
Water-soluble N-vinyl-2-pyrrolidone (VP) copolymers containing phenol (or catechol) groups in the side chains were synthesized by reactions of copolymers of VP and crotonic acid (CA) with p-aminophenol and by reaction of p-nitrophenyl ester groups co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ff31da9a383f242ff1010fc349cb703
https://doi.org/10.1002/macp.1996.021970620
https://doi.org/10.1002/macp.1996.021970620
Autor:
Boris Volchek, A.V. Purkina
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 265:209-224
With object to evaluate the effect of spacer chemical composition on chain conformation of thermotropic polymers in liquid crystalline (LC) state, linear and combined (main chain/side chain) polymers, containing fragment of malonic acid (FMA) in meth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49c3edc7ff1cf6a0f90abe0202cbe3b4
https://doi.org/10.1080/10587259508041693
https://doi.org/10.1080/10587259508041693
Autor:
A.S. Khachaturov, Olga V. Nazarova, A.V. Purkina, E. F. Panarin, A.I. Kol'tsov, Solovskij Mikhail, V.M. Denisov
Publikováno v:
European Polymer Journal. 28:97-100
The copolymerizations of N-vinylpyrrolidone with N-hydroxyphthalimide and N-hydroxysuccinimide esters of acrylic, methacrylic and crotonic acids have been investigated. The reactivity ratios were determined, and kinetic investigations of the copolyme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::029d0ee848b73d0179aa973a537b541c
https://doi.org/10.1016/0014-3057(92)90243-u
https://doi.org/10.1016/0014-3057(92)90243-u
Publikováno v:
Polymer Science U.S.S.R.. 33:1952-1959
The effect of the formation of LC order on the conformational structure of a number of thermotropic polyesters containing mesogenic and flexible fragments in the backbone with conformationally labile units in the mesogenic fragments has been studied.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ad9e0269886b7ea77e8b0e3a0af0ba0
https://doi.org/10.1016/0032-3950(91)90093-6
https://doi.org/10.1016/0032-3950(91)90093-6
Publikováno v:
Polymer Science U.S.S.R.. 32:1462-1467
Features of the orientation of thermotropic polyesters were observed by methods of IR spectroscopy with polarized and non-polarized radiation. Differences in the character of orientation of mesogenic fragments with respect to the shear direction are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8b5f486ded3797151bb0aad91690ec0
https://doi.org/10.1016/0032-3950(90)90117-o
https://doi.org/10.1016/0032-3950(90)90117-o
Publikováno v:
Polymer Science U.S.S.R.. 19:371-377
IR and NMR spectroscopy has been used to show that the liquid-crystalline state of poly-(γ-benzyl-L-glutamate) solutions persists in the presence of the weak chloroacetic acid (CAA) as well as the strong difluorochloro-acetic acid (DFCAA). The unusu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d1d4c61f7e97a86ca1a990e0bdc510d
https://doi.org/10.1016/0032-3950(77)90082-x
https://doi.org/10.1016/0032-3950(77)90082-x
Publikováno v:
Polymer Science U.S.S.R.. 22:930-939
The liquid crystal-isotropic solution phase equilibria have been studied by IR spectroscopy and polarized light microscopy on poly- γ -benzyl- L -glutamate concentrates in various solvents. The conditions under which the polymer exists in a non-aggr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2a8e0829eec90a7e7f808192aab5db3
https://doi.org/10.1016/0032-3950(80)90284-1
https://doi.org/10.1016/0032-3950(80)90284-1
Publikováno v:
Molecular Crystals and Liquid Crystals. 73:283-296
The diagrams of state for concentrated PBG solution in coordinates relating volume fraction-geometric asymmetry and volume fraction-temperature are investigated. The order parameter for macromolecules in the anisortropic phase is dettermined. The exp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58d9bba67f2b688988209ecd827f1558
https://doi.org/10.1080/00268948108072341
https://doi.org/10.1080/00268948108072341