Abstract
Single component nanofiller has shown some limitations in its performance, which can be overcome by hybrid nanofillers with two different components. In this work, montmorillonite (MMT)/graphene oxide (GO) hybrid nanofillers were formed by self‐assembly and then incorporated into the polyacrylonitrile (PAN) nanofibers by electrospinning process. X‐ray diffraction (XRD), atomic force microscopy (AFM), and transmission electron microscopy (TEM) were utilized to analyze the structures of MMT/GO hybrid nanofillers. And the effects of MMT/GO hybrid nanofillers on the morphology, thermal stability, and mechanical properties of PAN/MMT/GO composite nanofibrous membrane were examined by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and tensile test machine, respectively. The incorporation of MMT/GO hybrid nanofillers into PAN nanofibers showed a noticeable increase up to 30°C for the onset decomposition temperature and 1.32 times larger tensile strength than the pure PAN, indicating that the hybrid nanofiller is a promising candidate in improving thermal and mechanical properties of polymers.
Highlights
Among all the layer-structured materials, montmorillonite (MMT) and graphene oxide (GO) are most widely studied
The interaction between MMT and GO can be well illustrated by tracking the changes of these three spaces before and after the self-assembly
MMT/GO composite nanofillers were successfully prepared and well stabilized in DMF solution by selfassembly behavior which can be further divided into three effects, that is, intercalation between the interparticle space and interaggregate space, wrapping, and hydrogen bond
Summary
Among all the layer-structured materials, montmorillonite (MMT) and graphene oxide (GO) are most widely studied. MMT, a layered aluminosilicate mineral, consists of an octahedral gibbsite layer sandwiched between two tetrahedral silicate layers [1]. It has been well explored for its potential application as nanofillers for improving the mechanical and thermal properties of the guest polymers [2,3,4]. In 2008, Jang and Zhamu [7] predicted that NGP’s application as a nanofiller in a composite material was imminent. Since 2009, GO and NPG have been widely investigated as nanofillers for various polymers. Due to the intrinsic hydrophilic property of GO, the polymers that can be reinforced by GO are very limited
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