Functionalization of Multi-walled Carbon Nanotubes with Chitosan Using Click Chemistry

Click Chemistry를 이용한 다중벽 탄소나토튜브의 키토산 기능화

  • Ryu, Hee-Jeong (Department of Textile Engineering, Konkuk University) ;
  • Cho, Jae-Whan (Department of Textile Engineering, Konkuk University) ;
  • Kim, Young-Ho (Department of Organic Materials and Fiber Engineering, Soongsil University)
  • 류희정 (건국대학교 공과대학 섬유공학과) ;
  • 조재환 (건국대학교 공과대학 섬유공학과) ;
  • 김영호 (숭실대학교 유기신소재파이버공학과)
  • Received : 2011.04.20
  • Accepted : 2011.05.29
  • Published : 2011.06.30

Abstract

Multi-walled carbon nanotubes (MWNTs) were functionalized with chitosan using Cu-catalyzed Huisgen [3+2] cycloaddition click chemistry. Azide moiety-chitosan was prepared by synthesizing azide-moiety epichlorohydrin and its subsequent reaction with chitosan. Alkyne-functionalized MWNTs were separately prepared by the diazotization reaction of MWNTs with p-amino propargyl ether. Covalent functionalization of the MWNTs was accomplished through click coupling between the alkyne-derived MWNTs and the azide moiety-chitosan. The reaction was confirmed by FT-IR, Raman, SEM, and TEM measurements. Functionalized chitosan was observed by TEM on the surfaces of the MWNTs after click coupling. Electrical heating with a maximum of $6.8^{\circ}C$ occurred when a voltage of 60 V was applied to the MWNT/chitosan composites, further demonstrating the chitosan functionalization of the MWNTs.

Keywords

Acknowledgement

Grant : 서울시 산학연 협력사업

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