Syndiotactic poly(N-n-propylacrylamide) shows highly cooperative phase transition

Takeshi Mori, Tomohiro Hirano, Atsushi Maruyama, Yoshiki Katayama, Takuro Niidome, Yoichi Bando, Koichi Ute, Shinji Takaku, Yasushi Maeda

研究成果: ジャーナルへの寄稿記事

22 引用 (Scopus)

抄録

Syndiotactic poly(N-n-propylacrylamide)s (PNNPAM) with various racemo (r) diad contents were synthesized, and their phase transition behaviors were studied by high-sensitivity differential scanning calorimetry and FT-IR spectroscopy. The cooperativity of the phase transition increased with the increase in the r diad content. Compared with the atactic PNNPAM, the number of cooperative units, which shows the monomeric units length undergoing cooperative phase transition, increased 2.5- to 4-fold in the syndiotactic polymers. From the results of FT-IR spectroscopy and quantum chemical calculations, it was determined that the high cooperativity of the syndiotactic polymers resulted from local formation of an ordered structure in a dehydrated state.

元の言語英語
ページ(範囲)48-50
ページ数3
ジャーナルLangmuir
25
発行部数1
DOI
出版物ステータス出版済み - 1 6 2009

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Phase transitions
Infrared spectroscopy
Polymers
polymers
spectroscopy
Differential scanning calorimetry
heat measurement
scanning
sensitivity
N-n-propylacrylamide

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

これを引用

Syndiotactic poly(N-n-propylacrylamide) shows highly cooperative phase transition. / Mori, Takeshi; Hirano, Tomohiro; Maruyama, Atsushi; Katayama, Yoshiki; Niidome, Takuro; Bando, Yoichi; Ute, Koichi; Takaku, Shinji; Maeda, Yasushi.

:: Langmuir, 巻 25, 番号 1, 06.01.2009, p. 48-50.

研究成果: ジャーナルへの寄稿記事

Mori, T, Hirano, T, Maruyama, A, Katayama, Y, Niidome, T, Bando, Y, Ute, K, Takaku, S & Maeda, Y 2009, 'Syndiotactic poly(N-n-propylacrylamide) shows highly cooperative phase transition', Langmuir, 巻. 25, 番号 1, pp. 48-50. https://doi.org/10.1021/la8034837
Mori, Takeshi ; Hirano, Tomohiro ; Maruyama, Atsushi ; Katayama, Yoshiki ; Niidome, Takuro ; Bando, Yoichi ; Ute, Koichi ; Takaku, Shinji ; Maeda, Yasushi. / Syndiotactic poly(N-n-propylacrylamide) shows highly cooperative phase transition. :: Langmuir. 2009 ; 巻 25, 番号 1. pp. 48-50.
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