Abstract
In this paper, a self-healable nanocomposite based on the Diels-Alder reaction is developed. A graphene-based nanofiller is introduced to improve the self-healing efficiency, as well as the mechanical properties of the nanocomposite. Graphene oxide (GO) is modified with maleimide functional groups, and the maleimide-modified GO (mGO) enhanced the compatibility of the polymer matrix and nanofiller. The tensile strength of the nanocomposite containing 0.030 wt% mGO is improved by 172%, compared to that of a polymer film incorporating both furan-functionalized polymer and bismaleimide without any nanofiller. Moreover, maleimide groups of the surface on mGO participate in the Diels-Alder reaction, which improves the self-healing efficiency. The mechanical and self-healing properties are significantly improved by using a small amount of mGO.
Highlights
Polymers have been used in various applications, such as biomedical devices, transportation, artificial electron skin and coating [1,2,3,4]
Polymers are vulnerable to damage and loss of durability to external stimuli; polymer composites have been widely studied as a solution to these problems [5]
MGO is expected to improve the mechanical properties of the polymer matrix
Summary
Polymers have been used in various applications, such as biomedical devices, transportation, artificial electron skin and coating [1,2,3,4]. Polymers are vulnerable to damage and loss of durability to external stimuli; polymer composites have been widely studied as a solution to these problems [5]. They have been used in a variety of fields, owing to their superior properties such as good abrasion resistance, corrosion resistance, improved mechanical properties and a light weight. Graphene-based materials have outstanding properties such as high conductivity, thermal stability, good mechanical properties and compatibility with polymers [6,7,8]. The durability of polymer composites depends on the integrity of the polymer matrix and reinforcing material such as nanofiller [9]. Poor compatibility between the polymer matrix and the filler causes micro cracks
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