%0 Journal Article
%T HIGHLY DISPERSED MULTI-WALLED CARBON NANOTUBES IN WATER/ETHANOL AND ITS APPLICATION FOR PVA COMPOSITE<br>HIGHLY DISPERSED MULTI-WALLED CARBON NANOTUBES IN WATER／ETHANOL AND ITS APPLICATION FOR PVA COMPOSITE
%A YLi
%A XB Zhang
%A XY Tao
%A JM Xu
%A F Liu
%A GL Xu
%A <br>X.Y.Tao
%A J.M.Xu
%A F.Liu
%A G.L.Xu
%J 金属学报(英文版)
%D 2005
%I 
%X Two carboxylation processes were carried out to modify multi-walled carbon nanot ube bundles (m-MWNTs). The results showed that both of the m-MWNTs could be high ly dispersed in water with the concentration up to 25 and 15mg/mL in ethanol wit hout obvious deposition or conglomeration over 6 months. FTIR, Raman, TGA and TE M characterizations of the m- MWNTs showed that hydroxyl and carboxyl groups hav e been attached with MWNTs, and that the nanotube structure was only damaged a l ittle after modification treatments in mixed acids over 24h. Above prepared nano tube suspensions in water were successfully used as a filler of thermoplastic PV A composite to enhance its electrical conductivity. The results showed that the addition of m-MWNTs greatly improved the conductivity and the threshold of mass fraction was about 5wt%. The results also proved that purification process was n ot needed because of high purity of the raw MWNTs prepared in our group.
%K carbon nanotube
%K polyvinylalcohol composite
%K conductivity<br>碳纳米管
%K 聚乙烯乙醇
%K 复合材料
%K 导电性
%K 薄膜生长
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=ECF802E45CA75CA23AC11C886223EF67&yid=2DD7160C83D0ACED&vid=13553B2D12F347E8&iid=38B194292C032A66&sid=40862C82D74F7473&eid=7D6CD8918B045FD4&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=24