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Electrical and thermal stimuli responsive thermoplastic shape memory polymer composites containing rGO, Fe3O4 and rGO–Fe3O4 fillers
- Source :
- Polymer Bulletin. 78:6267-6289
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- This work addresses a facile and broadly applicable method of fabricating a new thermoplastic shape memory polymer (SMP) composite by blending three biopolymers such as polyvinyl alcohol, polyvinyl pyrrolidone and polyethylene glycol. Reduced Graphene (rGO) is used as electrical conductive fillers. Iron Oxide (Fe3O4) and rGO-Fe3O4 combination provides thermo-electric stimulus. Under the thermal stimulus, shape recovery rate of the SMP with hybrid fillers was faster, having quick response time (28 s) compared to electrical stimulus response time (75 s). The conductivity of the SMP matrices increased by 7, 10 and 15 orders of magnitude by incorporating Fe3O4, rGO and rGO- Fe3O4 fillers, respectively. Moreover, the proposed shape memory polymer containing rGO-Fe3O4 filler exhibits a higher Young’s modulus (> 80%) compared to neat polymer (1.75 GPa at room temperature and 0.6 GPa at glass transition temperature, Tg). A maximum stress of 2.5 MPa and 4% recoverable strain was achieved in the SMP with 10 and 15 wt% of hybrid fillers and interestingly no stored strain evolves, upon cooling below Tg. The developed SMP may be applied in morphing wing and other smart actuator applications.
- Subjects :
- chemistry.chemical_classification
Materials science
Thermoplastic
Polymers and Plastics
Graphene
Composite number
02 engineering and technology
General Chemistry
Polymer
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Polyvinyl alcohol
0104 chemical sciences
law.invention
Shape-memory polymer
chemistry.chemical_compound
chemistry
law
Materials Chemistry
Composite material
0210 nano-technology
Glass transition
Electrical conductor
Subjects
Details
- ISSN :
- 14362449 and 01700839
- Volume :
- 78
- Database :
- OpenAIRE
- Journal :
- Polymer Bulletin
- Accession number :
- edsair.doi...........93d9583e85c6b953cabc129cf8843c9f