مشخصات پژوهش

عنوان	Graphene network enabled high speed electrical actuation of shape memory nanocomposite based on poly(vinyl acetate)
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	electrical actuation; shape memory; poly(vinyl acetate); graphene
چکیده	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.
پژوهشگران	مسعود بابا احمدی (نفر دوم)، ناصر نیک فرجام (نفر ششم به بعد)، محسن کرامتی (نفر پنجم)، غلامرضا مهدوی نیا (نفر چهارم)، نوید صمدی (نفر سوم)، محمد سبزی (نفر اول)