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Materials 2015, 8(9), 6391-6400; doi:10.3390/ma8095313

Electroactive Shape Memory Property of a Cu-decorated CNT Dispersed PLA/ESO Nanocomposite

1
King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
2
Research Center, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
3
School of Engineering and Technology, Jagran Lakecity University, Mugaliyachap, Bhopal 462044, Madhya Pradesh, India
*
Author to whom correspondence should be addressed.
Academic Editor: Biqiong Chen
Received: 20 June 2015 / Revised: 21 August 2015 / Accepted: 14 September 2015 / Published: 18 September 2015
(This article belongs to the Special Issue Polymer Nanocomposites)
View Full-Text   |   Download PDF [1069 KB, uploaded 23 September 2015]   |  

Abstract

Shape memory polymer (SMP) nanocomposites with a fast electro-actuation speed were prepared by dispersing Cu-decorated carbon nanotubes (CNTs) (Cu-CNTs, 1 wt %, 2 wt %, and 3 wt %) in a polylactic acid (PLA)/epoxidized soybean oil (ESO) blend matrix. The shape memory effect (SME) induced by an electrical current was investigated by a fold-deploy “U”-shape bending test. In addition, the Cu-CNT dispersed PLA/ESO nanocomposite was characterized by atomic force microscopy (AFM), dynamic mechanical analysis (DMA) and tensile and electrical measurements. The results demonstrated that the SME was dependent on the Cu-CNT content in the nanocomposites. When comparing the SMEs of the nanocomposite specimens with different Cu-CNT contents, the 2 wt % Cu-CNT dispersed system exhibited a shape recovery as high as 98% within 35 s due to its higher electrical conductivity that results from uniform Cu-CNT dispersion. However, the nanocomposites that contained 1 wt % and 3 wt % Cu-CNTs required 75 s and 63 s, respectively, to reach a maximum recovery level. In addition, the specimens exhibited better mechanical properties after the addition of Cu-CNTs. View Full-Text
Keywords: shape memory polymer; polylactic acid; nanocomposites; electro actuation; shape recovery shape memory polymer; polylactic acid; nanocomposites; electro actuation; shape recovery
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Alam, J.; Khan, A.; Alam, M.; Mohan, R. Electroactive Shape Memory Property of a Cu-decorated CNT Dispersed PLA/ESO Nanocomposite. Materials 2015, 8, 6391-6400.

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