論文

2020年12月

Preparation and water desalination properties of bridged polysilsesquioxane membranes with divinylbenzene and divinylpyridine units

POLYMER JOURNAL
  • Kazuki Yamamoto
  • ,
  • Ibuki Saito
  • ,
  • Yunosuke Amaike
  • ,
  • Toshimi Nakaya
  • ,
  • Joji Ohshita
  • ,
  • Takahiro Gunji

52
12
開始ページ
1367
終了ページ
1374
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1038/s41428-020-0386-x
出版者・発行元
SPRINGERNATURE

Bridged polysilsesquioxanes are promising materials for reverse osmosis membranes because they exhibit robust properties. To investigate the effects of the polarity and rigidity of organic components of the polymer on the water permeability of the membrane, two alkoxysilane monomers, 2,5-bis[2-(triethoxysilyl)vinyl]pyridine (BTES-VP) and 1,4-bis[2-(triethoxysilyl) vinyl]benzene (BTES-VB), were synthesized to compare their hydrophilicity and water desalination properties. Water contact angle experiments on the film surfaces revealed that the BTES-VP-derived film was more hydrophilic than the BTES-VB-derived film. Density functional theory calculations of the monomer structures also suggested that BTES-VP is more polar and has a larger dipole moment than BTES-VB. Both membranes prepared from BTES-VP and BTES-VB rejected 95-97% of aqueous sodium chloride and displayed water permeances of 1.1 x 10(-13) and 8.5 x 10(-14) m(3)/(m(2) Pa s), respectively.

リンク情報
DOI
https://doi.org/10.1038/s41428-020-0386-x
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000552914700002&DestApp=WOS_CPL
ID情報
  • DOI : 10.1038/s41428-020-0386-x
  • ISSN : 0032-3896
  • eISSN : 1349-0540
  • Web of Science ID : WOS:000552914700002

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