期刊
EUROPEAN POLYMER JOURNAL
卷 48, 期 8, 页码 1366-1373出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2012.05.002
关键词
Carbon nanotubes; Nanocomposites; Electrical properties; Macroporous polymers; UV irradiation
Electrically conducting super-macroporous carbon nanotube/polymer cryogel nanocomposites were fabricated by a novel approach based on deposition of carbon nanotubes (CNTs) onto the inner surface of pre-formed cryogels assisted by cryogenic treatment. Stable aqueous dispersions of multi-walled and single-walled carbon nanotubes were firstly obtained by non-covalent modification of pristine nanotubes with either pyrene containing polydimethylacrylamide or poly(ethylene oxide)(26)-b-poly(propylene oxide)(40)-b-poly(ethylene oxide)(26) copolymers and, then, exploited for the preparation of nanocomposites. The mechanical and electrical properties of nanocomposite materials were measured And compared to similar materials prepared by established method. The novel approach provided super-macroporous nanocomposites with high electrical conductivity (>10(-2) S/m) at much lower nanotube content (0.12 wt.%). (C) 2012 Elsevier Ltd. All rights reserved.
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