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Graphene materials have attracted enormous academics and industries to explore due to its outstanding
thermal and mechanical properties. In this work, the solution-casted polyvinyl alcohol (PVA) film reinforced
with shear exfoliated graphene and its properties such as hardness and mechanical behaviour were studied.
The compatibility between graphene and PVA was enhanced by the functionalization of graphene with gum
Arabic. The decoration of OH groups on graphene allowed better interfacial interactions with PVA through
H-bonding chains. As been observed during morphological study by scanning electron microscopy (SEM)
and x-ray diffraction (XRD), agglomeration of graphene sheets was detected at highest graphene loading
(0.15 wt.%). Improvement of mechanical properties was observed by nanoindentation for sample with
lowest graphene contents (0.05 wt.%). The enhancement of nanoindentation modulus sample was
contributed by homogenously distributed graphene in the matrix of PVA.
International Iron & Steel Symposium
UDCS
Kamal Bin Yusoh
Zulhelmi Ismail
Abu Hannifa Abdullah
Anis Sakinah Zainal Abidin