| Item type |
文献 / Documents(1) |
| 公開日 |
2020-10-20 |
| アクセス権 |
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アクセス権 |
open access |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版社版DOI |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1002/pola.22797 |
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言語 |
ja |
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関連名称 |
10.1002/pola.22797 |
| 出版タイプ |
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出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| タイトル |
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|
タイトル |
Hydrogen-Bond-Assisted Syndiotactic-Specific Radical Polymerizations of N-Alkylacrylamides : The Effect of the N-Substituents on the Stereospecificities and Unusual Large Hysteresis in the Phase-Transition Behavior of Aqueous Solution of Syndiotactic Poly(N-n-propylacrylamide) |
|
言語 |
en |
| タイトル別表記 |
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その他のタイトル |
Hydrogen-Bond-Assisted Syndiotactic-Specific Radical Polymerizations of N-Alkylacrylamides : the Effect of the N-Substituents on the Stereospecificities and Unusual Large Hysteresis in the Phase Transition Behavior of Aqueous Solution of Syndiotactic Poly(N-n-propylacrylamide) |
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言語 |
en |
| タイトル別表記 |
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その他のタイトル |
RADICAL POLYMERIZATIONS OF N-ALKYLACRYLAMIDES |
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言語 |
en |
| 著者 |
平野, 朋広
ナカムラ, キミヒコ
カミクボ, タカヒロ
イシイ, サトシ
タニ, カナミ
森, 健
佐藤, 恒之
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
The radical polymerizations of N-alkylacrylamides, such as N-methyl- (NMAAm), N-n-propyl- (NNPAAm), N-benzyl- (NBnAAm), and N-(1-phenylethyl)acrylamides (NPhEAAm), at low temperatures were investigated in the absence or presence of hexamethylphosphoramide (HMPA) and 3-methyl-3-pentanol (3Me3PenOH), which induced the syndiotactic-specificities in the radical polymerization of N-isopropylacrylamide (NIPAAm). In the absence of the syndiotactic-specificity inducers, the syndiotacticities of the obtained polymers gradually increased as the bulkiness of the N-substituents increased. Both HMPA and 3Me3PenOH induced the syndiotactic-specificities in the NNPAAm polymerizations as well as in the NIPAAm polymerizations. The addition of 3Me3PenOH into the polymerizations of NMAAm significantly induced the syndiotactic-specificities, whereas the tacticities of the obtained polymers were hardly affected by adding HMPA. In the polymerizations of bulkier monomers, such as NBnAAm and NPhEAAm, HMPA worked as the syndiotactic-specificity inducer at higher temperatures, whereas 3Me3PenOH hardly influenced the stereospecificity, regardless of the temperatures. The phase transition behaviors of the aqueous solutions of poly(NNPAAm)s were also investigated. It appeared that the poly(NNPAAm) with racemo dyad content of 70% exhibited unusual large hysteresis between the heating and cooling processes. |
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言語 |
en |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
stereospecific polymers |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
|
主題 |
radical polymerization |
| キーワード |
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言語 |
en |
|
主題Scheme |
Other |
|
主題 |
stimuli-sensitive polymers |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
hydrogen bond |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
N-alkylacrylamides |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
syndiotactic |
| 書誌情報 |
en : Journal of Polymer Science Part A : Polymer Chemistry
巻 46,
号 13,
p. 4575-4583,
発行日 2008-05-28
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| 収録物ID |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0887624X |
| 収録物ID |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
10990518 |
| 収録物ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA1068915X |
| 収録物ID |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11624127 |
| 出版者 |
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出版者 |
Wiley |
|
言語 |
en |
| 権利情報 |
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|
言語 |
en |
|
権利情報 |
This is the peer reviewed version of the following article: Hirano, T., Nakamura, K., Kamikubo, T., Ishii, S., Tani, K., Mori, T. and Sato, T. (2008), Hydrogen‐bond‐assisted syndiotactic‐specific radical polymerizations of N‐alkylacrylamides: The effect of the N‐substituents on the stereospecificities and unusual large hysteresis in the phase‐transition behavior of aqueous solution of syndiotactic poly(N‐n‐propylacrylamide). J. Polym. Sci. A Polym. Chem., 46: 4575-4583., which has been published in final form at https://doi.org/10.1002/pola.22797. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. |
| EID |
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識別子 |
176139 |
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識別子タイプ |
URI |
| 言語 |
|
|
言語 |
eng |
jpsa_46_13_4575.pdf (302 KB)
