Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Jaroslav Straka"'
Publikováno v:
Polymer Bulletin. 35:315-321
The title polymer was prepared by the reaction of poly(4-formylstyrene) with 4-nitrophenylhydrazine. The polymer is amorphous and possesses a glass transition temperatureTg=230 °C. It crosslinks both thermally and by UV-irradiation and forms dense n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::115ee806357437f3da828eb07fd81ab9
https://doi.org/10.1007/bf00963129
https://doi.org/10.1007/bf00963129
Publikováno v:
Macromolecular Symposia. 94:19-31
The combination of IR, Raman and NMR spectroscopy was used in the study of the blends of semicrystalline and amorphous polymers with considerably different strength of intermolecular interactions: poly(ϵ-caprolactam)/polystyrene (PCL/PS), poly(ethyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10609f7109ba2b73dff423963bcdad8b
https://doi.org/10.1002/masy.19950940104
https://doi.org/10.1002/masy.19950940104
Publikováno v:
Polymer. 36:4011-4021
Poly(N-methyllaurolactam) (PNMLL) and its blends with poly(4-vinylphenol) (PVPh) were studied by a combination of infra-red, Raman and n.m.r. spectroscopic methods. In the crystalline phase of semicrystalline PNMLL, the amide bond was shown to be pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25a911551bf7124f8c66a85a1b468be8
https://doi.org/10.1016/0032-3861(95)90980-g
https://doi.org/10.1016/0032-3861(95)90980-g
Publikováno v:
Polymer. 35:1195-1202
Macroporous particles, prepared by the suspension polymerization of ethylene dimethacrylate (EDMA), possessing high specific surface areas (558 m 2 g −1 ) and pore volumes (6.9 ml g −1 ), contain unreacted double bonds which are accessible for fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4122341e429859464885f6bfac6001a2
https://doi.org/10.1016/0032-3861(94)90011-6
https://doi.org/10.1016/0032-3861(94)90011-6
Publikováno v:
Die Makromolekulare Chemie. 194:1757-1763
Infrared and 13C cross polarization/magic-angle spinning nuclear magnetic resonance (13C CP/MAS NMR) spectra and T relaxation times of differently treated poly(e-caprolactam)1 (PCL) and of poly(e-caprolactam)/polystyrene blends were measured and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fad713e12c9474704221c20896978408
https://doi.org/10.1002/macp.1993.021940622
https://doi.org/10.1002/macp.1993.021940622
Autor:
Jaroslav Straka, Jir̆í Spĕvác̆ek
Publikováno v:
Makromolekulare Chemie. Macromolecular Symposia. 72:201-213
The possibilities of NMR spectroscopy in studies of interactions in polymer systems are demonstrated on the example of two types of macromolecular complexes: (i) By measuring 1H NMR high resolution line intensities, the formation of ordered associate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7f7555a8cc751fd2c2c89a1c7e17384
https://doi.org/10.1002/masy.19930720115
https://doi.org/10.1002/masy.19930720115
Publikováno v:
Die Makromolekulare Chemie. 193:1451-1461
Nuclear magnetic relaxation data both for proton and for carbon-13 nuclei in solid-powder poly(L-alanine) are analyzed together, in order to obtain information on the molecular motions in polypeptides. For this analysis the “model-free” approach
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2d2170ad365b82ee2f20729f2f2d8b2
https://doi.org/10.1002/macp.1992.021930621
https://doi.org/10.1002/macp.1992.021930621
Publikováno v:
Magnetic Resonance in Chemistry. 29:500-505
13C CP/MAS NMR spectra (50.3 MHz) of 4-[N,N-bis(2-hydroxyethyl)amino]azobenzene (1), (N,N-dimethylamino)azobenzene (2), 4-methoxyazobenzene (3), 2-hydroxy-5-tert-butylazobenzene (4) and 4-hydroxyazobenzene (5) were recorded. The isotopomers of 1, 4 a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ffaad20328a28d4e866f1e028c2852c
https://doi.org/10.1002/mrc.1260290515
https://doi.org/10.1002/mrc.1260290515
Publikováno v:
Polymer. 32:1135-1139
A series of sorbents differing substantially in the content of phenyl groups were prepared by a base-catalysed reaction of poly(glycidyl methacrylate- co -ethylene dimethacrylate) with phenol. Methods are described for quantitative determination of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f78aaf975db83d65843f3b022ea513d9
https://doi.org/10.1016/0032-3861(91)90604-h
https://doi.org/10.1016/0032-3861(91)90604-h
Publikováno v:
Journal of Organometallic Chemistry. 389:29-39
Solid-state 119 Sn CP/MAS NMR spectra have been recorded for eleven triorganotin(IV) oxinates and thiooxinates and diorganotin(IV) dioxinates and dithiooxinates. The spectra of tri- and diorganotin(IV) oxinates and dioxinates reveal only one centre-b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d944ee0286df053e454ba81214680db
https://doi.org/10.1016/0022-328x(90)85390-k
https://doi.org/10.1016/0022-328x(90)85390-k