2022-Sustainable Industrial Processing Summit
SIPS2022 Volume 18 Intl. Symp on Advanced Materials, Polymers, Composite, Nanomaterials, Nanotechnologies and Manufacturing
| Editors: | F. Kongoli, F. Marquis, N. Chikhradze, T. Prikhna, M. De Campos, S. Lewis, S. Miller, S. Thomas. |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2022 |
| Pages: | 290 pages |
| ISBN: | 978-1-989820-68-1(CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Negative Electrostriction of Plasticized Poly(lactic acid) Filled with Multiwalled Carbon Nanotube
Anuvat Sirivat1; Natlita Thummarungsan1; Katesara Phasuksom1; Phimchanok Sakunpongpitiporn1; Kornkanok Rotjanasuworapong1;1CHULALONGKORN UNIVERSITY, Bangkok, Thailand;
Type of Paper: Regular
Id Paper: 169
Topic: 62
Abstract:
Stimuli responsive polymeric materials are materials that can convert external stimuli such as electric field, heat, light, and magnetic field into mechanical work [1]. They have been utilized in various applications, including medical devices, switches, artificial muscle, and shape memory materials [2]. In recent decades, biopolymers are promising materials to replace the petroleum-based polymers in which poly (lactic acid) (PLA) has attracted a great deal of attention. PLA can respond under applied electric field due to the carbonyl group in main chain that can rotate in the presence of electric field [3].
In this work, the PLA composites consisting of MWCNT as a nanofiller and DBP as a plasticizer were prepared by solvent casting. The electromechanical properties were investigated in the terms of the MWCNT concentration and electric field strength.
The PLA composites showed good recoverability during the time sweep test. The storage modulus response (∆Gꞌ) increases with increasing MWCNT content from 0 to 0.5%v/v and then decreases and become negative values after the MWCNT content higher than 0.8%v/v. 0.1%v/v MWCNT/PLA/DBP composite provided the highest storage modulus sensitivity of 1.56 at the electric filed strength of 1.5 kV/mm. Moreover, the 0.1%v/v MWCNT/PLA/DBP showed higher bending distances and dielectrophoresis forces at the electric filed strength below 300 V/mm.
Keywords:
Biodegradable; Thermoplastics;References:
[1] F. Carpi, E. Smela (2009) Biological Applications of Electroactive polymer Actuators. United Kingdom: John Wiley & Sons Ltd.[2] Y. Huang, J. Liang, Y. Chen, J. Mater. Chem., 22 (2012) 3671-3679.
[3] V. Sencadas, C. Ribeiro, A. Heredia, I.K. Bdikin, A.L. Kholkin, S. Lanceros-Mendez, Appl. Phys. A, 109, 2012, 51-55.