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Graphene network enabled high speed electrical actuation of shape memory nanocomposite based on poly(vinyl acetate)
Author(s) -
Sabzi Mohammad,
Babaahmadi Masoud,
Samadi Navid,
Mahdavinia Gholam Reza,
Keramati Mohsen,
Nikfarjam Nasser
Publication year - 2017
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5303
Subject(s) - materials science , nanocomposite , graphene , vinyl acetate , dynamic mechanical analysis , composite material , ethylene vinyl acetate , modulus , elastomer , polymer , nanotechnology , copolymer
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 graphene nanoplatelets formed a continuous network throughout the matrix with a large amount of interconnectedness. Dynamic mechanical analysis showed that the inclusion of graphene significantly improves both glassy and rubbery moduli of the matrix. Furthermore, the prepared nanocomposites demonstrated a marked electrical conductivity up to 24.7 S m −1 and thereby surprisingly rapid electrical actuation behaviour exhibiting a 100% recovery ratio in 2.5 s. Moreover, PVAc and its nanocomposites displayed scratch self‐healing capability. This work demonstrates that the PVAc /graphene nanocomposites with high modulus and excellent electroactive shape memory performance can be a promising material in many applications such as sensors and fast deployable and actuating devices. © 2016 Society of Chemical Industry