| ID | 115975 |
| Author |
Hirano, Tomohiro
Tokushima University
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Miki, Hitomi
Tokushima University
Seno, Makiko
Tokushima University
|
| Keywords | N-Isopropylacrylamide
Hydrogen bond
Stereospecific radical polymerization
radical polymerization
stereospecific polymerization
syndiotactic polymer
NMR
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| Content Type |
Journal Article
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| Description | Radical polymerization of N-isopropylacrylamide (NIPAAm) in toluene was investigated in the presence of hexamethylphosphoramide (HMPA). We succeeded in directly preparing syndiotactic-rich poly(NIPAAm), the syndiotacticity of which (r = 70%) is the highest among those of radically-prepared poly(NIPAAm)s so far reported, by lowering polymerization temperature to –60°C in the presence of a twofold amount of HMPA. The NMR analysis revealed that the induced syndiotactic-specificity was ascribed to 1:1 complex formation between NIPAAm and HMPA. Furthermore, thermodynamic analysis described that the induced syndiotactic-specificity was enthalpically achieved.
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| Journal Title |
Polymer
|
| ISSN | 00323861
|
| NCID | AA11537383
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| Publisher | Elsevier
|
| Volume | 46
|
| Issue | 11
|
| Start Page | 3693
|
| End Page | 3699
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| Published Date | 2005-04-07
|
| Rights | © 2005. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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| EDB ID | |
| DOI (Published Version) | |
| URL ( Publisher's Version ) | |
| FullText File | |
| language |
eng
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| TextVersion |
Author
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| departments |
Science and Technology
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