NMR Spectroscopic Study of Side Reactions in Anionic Polymerization of Acrylonitrile
1
Fundamental Research Laboratory of Fibers and Fiber-Forming Polymers, Asahi Chemical Industry Co., Ltd.,
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Publication type: Journal Article
Publication date: 1993-03-01
scimago Q2
wos Q3
SJR: 0.621
CiteScore: 5.8
Impact factor: 2.7
ISSN: 00323896, 13490540, 18181724, 27868486
Materials Chemistry
Polymers and Plastics
Abstract
An NMR study was conducted on the mechanisms of side reactions in anionic polymerization of acrylonitrile (AN) with di-n-hexylmagnesium as an initiator in mixed-xylene at 25°C. In the initiation step the metalation of AN monomer leads to deactivation of the initiator. In the propagation stage both chain transfer to an α-proton in propagating chain and metalation of monomer proceed in parallel with addition reaction of the AN monomer to the propagating chain. The former two reactions result in 1) formation of branching structures and 2) deactivation of active site, respectively. Some new NMR peaks resulting from above side reactions, which did not appear in 13C NMR spectra of radically prepared PAN, were assigned. According to the assignments in this work, the number-average molecular weight, Mn (330–5600) and branching density, which means the number of branching per 100 repeating units, were estimated for acetone-soluble or acetone-insoluble products.
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GOST
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Ono H., Hisatani K., Kamide K. NMR Spectroscopic Study of Side Reactions in Anionic Polymerization of Acrylonitrile // Polymer Journal. 1993. Vol. 25. No. 3. pp. 245-265.
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Ono H., Hisatani K., Kamide K. NMR Spectroscopic Study of Side Reactions in Anionic Polymerization of Acrylonitrile // Polymer Journal. 1993. Vol. 25. No. 3. pp. 245-265.
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RIS
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TY - JOUR
DO - 10.1295/polymj.25.245
UR - https://doi.org/10.1295/polymj.25.245
TI - NMR Spectroscopic Study of Side Reactions in Anionic Polymerization of Acrylonitrile
T2 - Polymer Journal
AU - Ono, Hirofumi
AU - Hisatani, Kunio
AU - Kamide, Kenji
PY - 1993
DA - 1993/03/01
PB - Springer Nature
SP - 245-265
IS - 3
VL - 25
SN - 0032-3896
SN - 1349-0540
SN - 1818-1724
SN - 2786-8486
ER -
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BibTex (up to 50 authors)
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@article{1993_Ono,
author = {Hirofumi Ono and Kunio Hisatani and Kenji Kamide},
title = {NMR Spectroscopic Study of Side Reactions in Anionic Polymerization of Acrylonitrile},
journal = {Polymer Journal},
year = {1993},
volume = {25},
publisher = {Springer Nature},
month = {mar},
url = {https://doi.org/10.1295/polymj.25.245},
number = {3},
pages = {245--265},
doi = {10.1295/polymj.25.245}
}
Cite this
MLA
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Ono, Hirofumi, et al. “NMR Spectroscopic Study of Side Reactions in Anionic Polymerization of Acrylonitrile.” Polymer Journal, vol. 25, no. 3, Mar. 1993, pp. 245-265. https://doi.org/10.1295/polymj.25.245.