MISC

2004年12月

Structural observation of heterogeneous poly(N-isopropyl acrylamide-co-acrylic acid) hydrogels in highly hydrated states

COLLOID AND POLYMER SCIENCE
  • R Kishi
  • ,
  • H Kihara
  • ,
  • T Miura

283
2
開始ページ
133
終了ページ
138
記述言語
英語
掲載種別
DOI
10.1007/s00396-004-1103-6
出版者・発行元
SPRINGER

Heterogeneous hydrogels were prepared by gamma-ray irradiation of aqueous solutions of N-isopropylacrylamide ( NIPAAm) and acrylic acid (AAc) having various compositions above the lower critical solution temperature. The structures of the poly(N-isopropylacrylamide) ( PNIPAAm) gel and poly(NIP-AAm-co-AAc) gels in both their highly hydrated and their natural states were observed by environmental scanning electron microscopy. The heterogeneous structures of the homopolymer gel and the copolymer gels whose AAc contents were between 10 - 50% consisted of interconnected microspheres. In the copolymer gel with a high AAc content, the structure became a largely interconnected one which lacked micro-droplets. The hydrophobic interaction caused by hydrogen bonding between the unionized carboxylic acid groups of AAc and the amide groups of NIPAAm, the rates of polymerization, and the aggregation rates play important roles in the formation of interconnected microsphere gel structures.

Web of Science ® 被引用回数 : 14

リンク情報
DOI
https://doi.org/10.1007/s00396-004-1103-6
CiNii Articles
http://ci.nii.ac.jp/naid/80017064149
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000225305000003&DestApp=WOS_CPL
ID情報
  • DOI : 10.1007/s00396-004-1103-6
  • ISSN : 0303-402X
  • CiNii Articles ID : 80017064149
  • Web of Science ID : WOS:000225305000003

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