Conductive Shape Memory Microfiber Membranes with Core-Shell Structures and Electroactive Performance
| Autor: | Jinsong Leng, Fenghua Zhang, Linlin Wang, Xia Yuliang, Liwu Liu, Yanju Liu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
business.product_category 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Polypyrrole 01 natural sciences Electrospinning 0104 chemical sciences Shape-memory polymer chemistry.chemical_compound Membrane Polymerization Polylactic acid chemistry Coating Microfiber engineering General Materials Science Composite material 0210 nano-technology business |
| Zdroj: | ACS applied materialsinterfaces. 10(41) |
| ISSN: | 1944-8252 |
| Popis: | Conductive shape memory polymers as a class of functional materials play a significant role in sensors and actuators. A high conductivity and a high response speed are needed in practical applications. In this work, a conductive shape memory polylactic acid (PLA) microfiber membrane was synthesized by combining electrospinning with chemical vapor polymerization. The shape memory PLA was electrospun into microfibers with different diameters, and a conductive polypyrrole (PPy) coating was applied to the PLA microfiber membranes using vapor polymerization. The conductivity of the microfiber membrane was investigated as a function of different experimental parameters: FeCl3 concentration, PPy evaporation time, and PPy temperature. The maximum conductivity of the membrane prepared in a sub-zero environment is 0.5 S/cm, which can sustain a heat-generating electric current sufficient to trigger the electro-actuated behaviors of the membrane within 2 s at 30 V. Thermographic imaging was used to assess the uniform... |
| Databáze: | OpenAIRE |
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