Graphene network enabled high speed electrical actuation of shape memory nanocomposite based on poly(vinyl acetate)
作者： Mohammad Sabzi , Masoud Babaahmadi , Navid Samadi , Gholam Reza Mahdavinia , Mohsen Keramati
DOI: 10.1002/PI.5303
关键词: Scratch 、 Nanocomposite 、 Materials science 、 Composite material 、 Graphene 、 Modulus 、 Vinyl acetate 、 Electrical resistivity and conductivity 、 Dynamic mechanical analysis 、 Shape-memory alloy
摘要: Here strong electroactive shape memory nanocomposites were prepared by incorporating graphene nanoplatelets into poly(vinyl acetate) (PVAc) through the simple solvent mixing method. TEM and XRD revealed that well exfoliated formed a continuous network throughout matrix with large amount of interconnectedness. Dynamic mechanical analysis showed inclusion significantly improves both glassy rubbery moduli matrix. Furthermore, demonstrated marked electrical conductivity up to 24.7 S m−1 thereby surprisingly rapid actuation behaviour exhibiting 100% recovery ratio in 2.5 s. Moreover, PVAc its displayed scratch self-healing capability. This work demonstrates PVAc/graphene high modulus excellent performance can be promising material many applications such as sensors fast deployable actuating devices. © 2016 Society Chemical Industry
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