Electroactive shape-memory polyurethane composites incorporating carbon nanotubes

被引:507
作者
Cho, JW [1 ]
Kim, JW
Jung, YC
Goo, NS
机构
[1] Konkuk Univ, Dept Text Engn, Seoul 143701, South Korea
[2] Konkuk Univ, Dept Aerosp Engn, Seoul 143701, South Korea
关键词
carbon nanotube; nanocomposites; polyurethanes; shape memory;
D O I
10.1002/marc.200400492
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Electro-active shape-memory composites were synthesized using conducting polyurethane (PU) composites and multi-walled carbon nanotubes (MWNTs). Surface modification of the MWNTs (by acid treatment) improved the mechanical properties of the composites. The modulus and stress at 100% elongation increased with increasing surface-modified MWNT content, while elongation at break decreased. MWNT surface modification also resulted in a decrease in the electrical conductivity of the composites, however, as the surface modified MWNT content increased the conductivity increased (an order of 10(-3) S (.) cm(-1) was obtained in samples with 5 wt.-% modified-MWNT content). Electro-active shape recovery was observed for the surface-modified MWNT composites with an energy conversion efficiency of 10.4%. Hence, PU-MWNT composites may prove promising candidates for use as smart actuators.
引用
收藏
页码:412 / 416
页数:5
相关论文
共 25 条
  • [1] Mechanical and electrical properties of a MWNT/epoxy composite
    Allaoui, A
    Bai, S
    Cheng, HM
    Bai, JB
    [J]. COMPOSITES SCIENCE AND TECHNOLOGY, 2002, 62 (15) : 1993 - 1998
  • [2] Bae J, 2002, MACROMOL CHEM PHYS, V203, P2196, DOI 10.1002/1521-3935(200211)203:15<2196::AID-MACP2196>3.0.CO
  • [3] 2-U
  • [4] Carbon nanotube actuators
    Baughman, RH
    Cui, CX
    Zakhidov, AA
    Iqbal, Z
    Barisci, JN
    Spinks, GM
    Wallace, GG
    Mazzoldi, A
    De Rossi, D
    Rinzler, AG
    Jaschinski, O
    Roth, S
    Kertesz, M
    [J]. SCIENCE, 1999, 284 (5418) : 1340 - 1344
  • [5] Geng HZ, 2002, ADV MATER, V14, P1387, DOI 10.1002/1521-4095(20021002)14:19<1387::AID-ADMA1387>3.0.CO
  • [6] 2-Q
  • [7] Organic functionalization of carbon nanotubes
    Georgakilas, V
    Kordatos, K
    Prato, M
    Guldi, DM
    Holzinger, M
    Hirsch, A
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (05) : 760 - 761
  • [8] Water-based single-walled-nanotube-filled polymer composite with an exceptionally low percolation threshold
    Grunlan, JC
    Mehrabi, AR
    Bannon, MV
    Bahr, JL
    [J]. ADVANCED MATERIALS, 2004, 16 (02) : 150 - +
  • [9] Ester-functionalized soluble single-walled carbon nanotubes
    Hamon, MA
    Hui, H
    Bhowmik, P
    Itkis, HME
    Haddon, RC
    [J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2002, 74 (03): : 333 - 338
  • [10] Hill AV, 1922, J PHYSIOL-LONDON, V56, P19