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Thin polymer films based on poly(vinyl alcohol) containing graphene oxide and reduced graphene oxide with functional properties
Author(s) -
Taraghi Iman,
Paszkiewicz Sandra,
Irska Izabela,
Szymczyk Anna,
Linares Amelia,
Ezquerra Tiberio A.,
Kurcz Magdalena,
WinkowskaStruzik Magdalena,
Lipińska Ludwika,
Kowiorski Krystian,
Piesowicz Elżbieta
Publication year - 2021
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.25692
Subject(s) - materials science , vinyl alcohol , graphene , thermogravimetric analysis , differential scanning calorimetry , oxide , nanocomposite , thermal stability , crystallization , composite material , ultimate tensile strength , polyvinyl alcohol , fourier transform infrared spectroscopy , casting , microstructure , chemical engineering , polymer , nanotechnology , physics , engineering , metallurgy , thermodynamics
In this article, the effect of the addition of graphene oxide (GO) and reduced graphene oxide (rGO) on the mechanical properties, thermal stability, and electrical conductivity of polyvinyl alcohol (PVA) has been investigated. Different weight percentages of nanofillers ranging from 0.5 to 5 wt% have been combined with PVA. The ultrasonic technique has been applied to disperse nanofillers in the PVA solution. The nanocomposite films have been prepared via solution casting technique and the dispersion of nanofillers into the PVA has been studied through optical microscopy. The microstructure, crystallization behavior, and interfacial interaction were characterized through X‐ray diffraction and Fourier transform infrared spectroscopy. Differential scanning calorimetry (DSC) and thermogravimetric analysis have been applied to study the thermal properties of the prepared nanocomposites. The DSC results revealed that the crystallization temperature and melting temperature were enhanced in the presence of GO nanofiller. Besides, the tensile strength at break was improved along with the addition of GO; however, elongation at break for PVA/GO and PVA/rGO was diminished. Moreover, all specimens showed insulating behavior and the only sample was electrically conducting, which contain a high amount of rGO (5 wt%).