論文

査読有り
2016年8月

Stretchable composite hydrogels incorporating modified cellulose nanofiber with dispersibility and polymerizability: Mechanical property control and nanofiber orientation

POLYMER
  • Ryosuke Kobe
  • ,
  • Shinichiro Iwamoto
  • ,
  • Takashi Endo
  • ,
  • Kouzou Yoshitani
  • ,
  • Yoshikuni Teramoto

97
開始ページ
480
終了ページ
486
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.polymer.2016.05.065
出版者・発行元
ELSEVIER SCI LTD

We fabricated composite hydrogels using surface-modified cellulose nanofiber (CNF) as a multifunctional crosslinker and N-isopropylacrylamide (NIPAM) as a monomer. Surface modification of CNF was performed using maleic anhydride (MA), which endowed the CNF with not only aqueous dispersibility but also vinyl polymerizability. We characterized the MA-modified CNF (MACNF) using wet chemical analysis, spectroscopy, and morphological observations. Hydrogels were prepared by in situ radical polymerization of mixtures of MACNF aqueous suspensions and NIPAM monomer, using a radical initiator and a catalyst under various conditions. The obtained hydrogels were transparent and highly stretchable (to more than 20 times their original length), and their mechanical properties, in particular, their tensile strength, could be controlled by exploiting the high dispersibility of the MACNF. Optical anisotropy measurements of the stretched gel specimens revealed that the MACNF fibers were highly oriented due to the large deformation, which led to an increase in the tensile strength of the specimens. A clear temperature dependence of the optical transmittance of the hydrogel samples was also observed, which originates from the coil-to-globule transition of poly(NIPAM) in aqueous media at its lower critical solution temperature. (C) 2016 Elsevier Ltd. All rights reserved.

Web of Science ® 被引用回数 : 17

リンク情報
DOI
https://doi.org/10.1016/j.polymer.2016.05.065
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000379676400050&DestApp=WOS_CPL
URL
http://orcid.org/0000-0002-4580-1704

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