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Electrical conductivity of thermoresponsive shape-memory polymer with embedded micron sized Ni powder chains.

Authors :
Leng, J. S.
Lan, X.
Liu, Y. J.
Du, S. Y.
Huang, W. M.
Liu, N.
Phee, S. J.
Yuan, Q.
Source :
Applied Physics Letters; 1/7/2008, Vol. 92 Issue 1, p014104, 3p, 3 Diagrams, 5 Graphs
Publication Year :
2008

Abstract

The electrical resistivity of a thermoresponsive polyurethane shape-memory polymer (SMP) filled with micron sized Ni powders is investigated in this letter. We show that, by forming conductive Ni chains under a weak static magnetic field (0.03 T), the electrical conductivity of the SMP composite in the chain direction can be improved significantly, which makes it more suitable for Joule heat induced shape recovery. In addition, Ni chains reinforce the SMP significantly but their influence on the glass transition temperature is about the same as that of the randomly distributed Ni powders. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00036951
Volume :
92
Issue :
1
Database :
Complementary Index
Journal :
Applied Physics Letters
Publication Type :
Academic Journal
Accession number :
28561182
Full Text :
https://doi.org/10.1063/1.2829388