Reactivity of free radical intermediates that form spontaneously during molecular chlorine action on acetylene and vinyl monomers at low temperatures
In this study ESR, UV, VIS and IR spectroscopy, chromatography, calorimetry, and elemental analysis were employed to show the spontaneous formation of free radicals under low-temperature action of molecular chlorine on acetylene monomer p-diethynylbenzene, and vinyl monomer acrylamide. These radic...
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
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| Zitieren: | Reactivity of free radical intermediates that form spontaneously during molecular chlorine action on acetylene and vinyl monomers at low temperatures / D.A. Gordon, V.A. Volodina, A.I. Mikhailov // Физика низких температур. — 2013. — Т. 39, № 6. — С. 726–733. — Бібліогр.: 25 назв. — англ. |
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Gordon, D.A. Volodina, V.A. Mikhailov, A.I. 2017-05-30T13:13:28Z 2017-05-30T13:13:28Z 2013 Reactivity of free radical intermediates that form spontaneously during molecular chlorine action on acetylene and vinyl monomers at low temperatures / D.A. Gordon, V.A. Volodina, A.I. Mikhailov // Физика низких температур. — 2013. — Т. 39, № 6. — С. 726–733. — Бібліогр.: 25 назв. — англ. 0132-6414 PACS: 82.35.Cd, 61.80.Ed https://nasplib.isofts.kiev.ua/handle/123456789/118476 In this study ESR, UV, VIS and IR spectroscopy, chromatography, calorimetry, and elemental analysis were employed to show the spontaneous formation of free radicals under low-temperature action of molecular chlorine on acetylene monomer p-diethynylbenzene, and vinyl monomer acrylamide. These radicals are able to initiate chain reaction of polymerization of monomers at low temperatures. This reaction results in a completely soluble polymer with a yield of 25 %, while an insoluble cross-linked polymer has been obtained during polymerization of p-diethynylbenzene initiated by other means. For example, under radiolysis by 1000 kGy the soluble fraction of obtained polymer was ≈ 1% while the overall yield was ≈ 10%. p-Diethynylbenzene polymerizes at temperatures close to chlorine melting (170 K). Polymerization of acrylamide takes place in the temperature range of 180–210 K with an yield of polymer ≈ 10%. The low-temperature chlorination of a 20%-solution of acrylamide in glycerol enables a twofold increase of the polymer yield, and a tenfold decrease of the chlorine content in it. The authors are grateful to P.S. Mozhayev (IPCP RAS, Chernogolovka) for the treatment of monomers and the synthesis of chlorine, to A.I. Kuzaev (IPCP RAS, Cherno-golovka) and to A.N. Ryabev (INEOS, Moscow) for the GPC analysis of the products. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур 9th International Conference on Cryocrystals and Quantum Crystals Reactivity of free radical intermediates that form spontaneously during molecular chlorine action on acetylene and vinyl monomers at low temperatures Article published earlier |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine |
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DSpace DC |
| title |
Reactivity of free radical intermediates that form spontaneously during molecular chlorine action on acetylene and vinyl monomers at low temperatures |
| spellingShingle |
Reactivity of free radical intermediates that form spontaneously during molecular chlorine action on acetylene and vinyl monomers at low temperatures Gordon, D.A. Volodina, V.A. Mikhailov, A.I. 9th International Conference on Cryocrystals and Quantum Crystals |
| title_short |
Reactivity of free radical intermediates that form spontaneously during molecular chlorine action on acetylene and vinyl monomers at low temperatures |
| title_full |
Reactivity of free radical intermediates that form spontaneously during molecular chlorine action on acetylene and vinyl monomers at low temperatures |
| title_fullStr |
Reactivity of free radical intermediates that form spontaneously during molecular chlorine action on acetylene and vinyl monomers at low temperatures |
| title_full_unstemmed |
Reactivity of free radical intermediates that form spontaneously during molecular chlorine action on acetylene and vinyl monomers at low temperatures |
| title_sort |
reactivity of free radical intermediates that form spontaneously during molecular chlorine action on acetylene and vinyl monomers at low temperatures |
| author |
Gordon, D.A. Volodina, V.A. Mikhailov, A.I. |
| author_facet |
Gordon, D.A. Volodina, V.A. Mikhailov, A.I. |
| topic |
9th International Conference on Cryocrystals and Quantum Crystals |
| topic_facet |
9th International Conference on Cryocrystals and Quantum Crystals |
| publishDate |
2013 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
In this study ESR, UV, VIS and IR spectroscopy, chromatography, calorimetry, and elemental analysis were
employed to show the spontaneous formation of free radicals under low-temperature action of molecular chlorine
on acetylene monomer p-diethynylbenzene, and vinyl monomer acrylamide. These radicals are able to initiate
chain reaction of polymerization of monomers at low temperatures. This reaction results in a completely
soluble polymer with a yield of 25 %, while an insoluble cross-linked polymer has been obtained during polymerization
of p-diethynylbenzene initiated by other means. For example, under radiolysis by 1000 kGy the soluble
fraction of obtained polymer was ≈ 1% while the overall yield was ≈ 10%. p-Diethynylbenzene polymerizes at
temperatures close to chlorine melting (170 K). Polymerization of acrylamide takes place in the temperature
range of 180–210 K with an yield of polymer ≈ 10%. The low-temperature chlorination of a 20%-solution of
acrylamide in glycerol enables a twofold increase of the polymer yield, and a tenfold decrease of the chlorine
content in it.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/118476 |
| citation_txt |
Reactivity of free radical intermediates that form spontaneously during molecular chlorine action on acetylene and vinyl monomers at low temperatures / D.A. Gordon, V.A. Volodina, A.I. Mikhailov // Физика низких температур. — 2013. — Т. 39, № 6. — С. 726–733. — Бібліогр.: 25 назв. — англ. |
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| first_indexed |
2025-12-07T19:13:14Z |
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2025-12-07T19:13:14Z |
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