Ultralight porous poly (vinylidene fluoride)-graphene nanocomposites with compressive sensing properties

摘要: Compressible sensors with highly porous features are ideal candidates for sports and wearable electronics. This study demonstrated the first time, how crystalline transformation of poly (vinylidene fluoride) (PVDF) influences aerogel formation also compressible sensing properties a graphene composite. In present study, two feasible synthesis methods fabrication both PVDF/graphene foams aerogels high sensitivity. A three-dimensional network is prepared by gelation induced crystallization PVDF/cyclohexanone adjusting temperature time. Herein, density range 0.11 `- 0.17 g·cm−3 were fabricated. The compressive behaviour was compared foam samples. Incorporation 20 wt.% in PVDF improved strength significantly 12 times. electromechanical performance shows that PVDF/20G (G represents graphene) sample has sensitivity 396.7 kPa−1 to pressure higher than 400 kPa, while PVDF/40G have value 3.0 × 10−3 lower 500 kPa. results provide new pathways fabricate composite lighter mechanical electrical properties.