Zobrazeno 1 - 10
of 37
pro vyhledávání: '"A.P. Lang"'
Publikováno v:
Polymer International. 52:1719-1724
The radicals formed on gamma-radiolysis of a series of copolymers of methacrylic acid and acrylonitrile have been investigated by ESR spectroscopy. This series of copolymers spanned the full composition range and the study was carried out at 77 K and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5cce6090d8ba02485d61a27c55f935e5
https://doi.org/10.1002/pi.1298
https://doi.org/10.1002/pi.1298
Publikováno v:
European Polymer Journal. 28:391-398
The copolymerization of styrene and acrylonitrile has been examined in acetonitrile and toluene and in bulk. All the systems display a significant penultimate unit effect. The comparison of the bulk system with these involving toluene and acetonitril
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10c0a3078a0ec20652712dcf81bd6b8b
https://doi.org/10.1016/0014-3057(92)90260-9
https://doi.org/10.1016/0014-3057(92)90260-9
Publikováno v:
Polymer Degradation and Stability. 38:205-218
Copolymers of styrene and acrylonitrile have been γ-irradiated at 77 and 300K. At 300K, the copolymers display significant radiation protection effects in terms of the formation of radicals observed by ESR spectroscopy. These protection effects have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14504e69fa4c51e2f82575c83984a89d
https://doi.org/10.1016/0141-3910(92)90115-l
https://doi.org/10.1016/0141-3910(92)90115-l
Publikováno v:
Polymer Degradation and Stability. 38:193-203
The effect of γ-radiation on polyacrylonitrile has been examined using ESR spectroscopy and through analysis of the changes in molecular weight. The G-values for radical formation of polyacrylonitrile have been calculated at 77 and 300K; G(R·) ≅
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74be51f7bb5e43854a15d52b5651d449
https://doi.org/10.1016/0141-3910(92)90114-k
https://doi.org/10.1016/0141-3910(92)90114-k
Publikováno v:
Polymer International. 26:171-179
Through the use of 1 H, 13 C, DEPT and two-dimensional NMR techniques, the observed resonances in the NMR spectra of the copolymers can be assigned. Configurational effects are shown to play an important role, although in all cases the chemical shift
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7798168df6e903731cdd56febc0dfbb9
https://doi.org/10.1002/pi.4990260309
https://doi.org/10.1002/pi.4990260309
Publikováno v:
European Polymer Journal. 27:765-772
The copolymerization of styrene and acrylonitrile has been investigated with the purpose of predicting the changes in copolymer composition and comonomer sequence distribution with increasing conversion. Toluene was used as the solvent and the copoly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c723746a030bafcc19384cbb6a1804a
https://doi.org/10.1016/0014-3057(91)90005-9
https://doi.org/10.1016/0014-3057(91)90005-9
Akademický článek
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Publikováno v:
Progress in Pacific Polymer Science ISBN: 9783642841170
The study of the mechanisms of copolymerization reactions has attracted the attention of polymer scientists over many years. Copolymerization reactions have been described in terms of various mathematical models, terminal, penultimate, complex, etc.,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ae85f9784809ac03d29dbf809a7909b
https://doi.org/10.1007/978-3-642-84115-6_28
https://doi.org/10.1007/978-3-642-84115-6_28
Akademický článek
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Publikováno v:
European Polymer Journal. 25:911-915
A numerical analysis of the relationship between the composition of the monomer feed and that for the resultant copolymer (at low conversion) is the method usually adopted for determination of copolymerization reactivity ratios. However, the six tria
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::443f38b94c4aa1da6dcd128c188867b0
https://doi.org/10.1016/0014-3057(89)90109-2
https://doi.org/10.1016/0014-3057(89)90109-2