Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Yozo Chatani"'
Publikováno v:
Polymer Journal. 28:916-921
For isotactic poly(methyl methacrylate), molecular mechanics energy calculations were carried out on several double-stranded helix oligomer models for analyzing the energetical stability of the polymer double-stranded helix determined by X-ray analys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abcc4ff40926c47cfcab6d37e48875af
https://doi.org/10.1295/polymj.28.916
https://doi.org/10.1295/polymj.28.916
Publikováno v:
Polymer. 35:2028-2039
The X-ray structure analysis of isotactic poly(methyl methacrylate) was performed by adopting the 10 1 double-stranded helix model as the molecular model, and the crystal structure analysis, which has remained as an unsettled problem for a long time,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::421a19ffb2e29d82212cf694672c355e
https://doi.org/10.1016/0032-3861(94)90224-0
https://doi.org/10.1016/0032-3861(94)90224-0
Publikováno v:
Polymer. 35:18-22
The crystal structure of poly[oxy-1,3-(2-cyanophenylene)-oxy-1,3-phenylene] was determined by X-ray diffraction. The structure belongs to the monoclinic system with the space group P 2 1 a , and has unit cell constants of a = 8.62 A , b = 13.07 A , c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::037941d2da19a977e733971a9fe4f428
https://doi.org/10.1016/0032-3861(94)90043-4
https://doi.org/10.1016/0032-3861(94)90043-4
Publikováno v:
Polymer. 34:1625-1629
The crystal structure of a planar zigzag form of syndiotactic polystyrene (planar form I) obtained by annealing as-cast samples from solutions (molecular compounds with the solvents) was studied by X-rays. Crystal data are as follows: orthorhombic sy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d00e2b7da87ceb135d590c239e2ba4f
https://doi.org/10.1016/0032-3861(93)90319-6
https://doi.org/10.1016/0032-3861(93)90319-6
Autor:
Yukio Shimane, Haruo Shikuma, Toshimitsu Yukinari, Toshikazu Ijitsu, Tomoko Inagaki, Yozo Chatani
Publikováno v:
Polymer. 34:1620-1624
The crystal structure of the syndiotactic polystyrene-toluene molecular compound was studied by X-ray diffraction. The crystal data are as follows: monoclinic system, space group P21/a (no. 14), a = 17.58, b = 13.26 , c(chain axis) = 7.71 A, γ = 121
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45220500e24a816a86e8bc533ea64c01
https://doi.org/10.1016/0032-3861(93)90318-5
https://doi.org/10.1016/0032-3861(93)90318-5
Autor:
Norio Nakamura, Yozo Chatani
Publikováno v:
Polymer. 34:1644-1648
To explain the characteristics of X-ray scattering by isotactic polystyrene dry gels, a coiled-coil molecular model is proposed instead of the previously reported almost fully extended 12/1 helix having sixfold helical symmetry (per dimer). The coile
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74846cc9a52b58c9ef83226a18bb2ad5
https://doi.org/10.1016/0032-3861(93)90322-2
https://doi.org/10.1016/0032-3861(93)90322-2
Publikováno v:
Polymer. 34:4841-4845
Syndiotactic polystyrene was found to form a molecular compound with iodine as well as with a variety of organic compounds. The iodine molecular compound with uniaxial orientation was obtained by immersing amorphous polystyrene (obtained by quenching
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb5df2384451946db25653b312d1e997
https://doi.org/10.1016/0032-3861(93)90007-w
https://doi.org/10.1016/0032-3861(93)90007-w
Autor:
Tsutomu Ishioka, Tomoko Inagaki, Toshimitsu Yukinari, Toshikazu Ijitsu, Yozo Chatani, Yukio Shimane, Yuko Inoue
Publikováno v:
Polymer. 33:488-492
The features of the crystallization of syndiotactic polystyrene were investigated by X-ray diffraction, differential thermal analysis, thermogravimetry and density measurements. This polymer exhibits polymorphism: there are principally four distinct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b47a2b880483bf9cae8f7430550880c7
https://doi.org/10.1016/0032-3861(92)90723-a
https://doi.org/10.1016/0032-3861(92)90723-a
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 29:1649-1652
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45ebe1066fc06600021bb1044cc7f20f
https://doi.org/10.1002/polb.1991.090291310
https://doi.org/10.1002/polb.1991.090291310
Publikováno v:
Polymer. 31:2238-2244
The poly(ethylene oxide) (PEO)-sodium thiocyanate system was found to exhibit polymorphism: there exist at least three crystal modifications. Among them, the crystal structures of two kinds of PEO-NaSCN complex with molar ratios (EO:NaSCN) of 3:1 (fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91b40071e33ef0bc64f7328ef2d36147
https://doi.org/10.1016/0032-3861(90)90308-l
https://doi.org/10.1016/0032-3861(90)90308-l