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المؤلفDeshmukh, Kalim
المؤلفAhamed, M. Basheer
المؤلفDeshmukh, Rajendra R.
المؤلفKhadheer Pasha, S.K.
المؤلفSadasivuni, Kishor Kumar
المؤلفPonnamma, Deepalekshmi
المؤلفChidambaram, K.
تاريخ الإتاحة2021-04-22T10:16:23Z
تاريخ النشر2016
اسم المنشورEuropean Polymer Journal
المصدرScopus
الرقم المعياري الدولي للكتاب143057
معرّف المصادر الموحدhttp://dx.doi.org/10.1016/j.eurpolymj.2016.01.022
معرّف المصادر الموحدhttp://hdl.handle.net/10576/18303
الملخصA novel ultra-high-k composite material comprising of polyvinyl alcohol (PVA) as a polymer matrix and vanadium pentoxide (V2O5) and graphene oxide (GO) as fillers have been developed successfully using colloidal processing technique. The PVA/V2O5 and PVA/V2O5/GO composites were characterized using Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, UV–vis spectroscopy (UV), X-ray diffraction (XRD), thermogravimetric analysis (TGA), polarized optical microscopy (POM), scanning electron microscopy (SEM) and atomic force microscopy (AFM). FTIR studies indicate the strong chemical interaction between GO and polymer matrix. SEM results confirm that GO was homogeneously dispersed within the polymer matrix. The dielectric measurements show that PVA/V2O5/GO composites exhibit ultra-high dielectric constant and low dielectric loss. The dielectric constant increases from (ε = 189.40, 50 Hz, 40 °C) for PVA/V2O5 (95/05 wt/wt) composites to (ε = 5610.76, 50 Hz, 50 °C) for PVA/V2O5/GO composites with 2.5 wt% GO loading and the dielectric loss increases from (tan δ = 3.76, 50 Hz, 80 °C) for PVA/V2O5 (95/05) composites to (tan δ = 9.77, 50 Hz, 150 °C) for PVA/V2O5/GO composites with 2.5 wt% GO loading. This study opens up the avenue to prepare novel graphene-based polymer composites having ultra-high dielectric constant and low dielectric loss and extends the application window of graphene based fillers.
راعي المشروعOne of the authors, Kalim Deshmukh would like to thank the management of B.S. Abdur Rahman University , Chennai 600048, TN, India for providing Junior Research Fellowship (JRF) to carry out this research work. Kalim Deshmukh also wishes to thank Dr. S.M. Khatake from Elantas Beck Pvt. Ltd., Pune for carrying out TGA analysis and Prof. Pundlik R. Bhagat from VIT University, Vellore, TN, India, for help in SEM and AFM studies.
اللغةen
الناشرElsevier Ltd
الموضوعColloidal processing
Graphene oxide
High-k polymer composites
V2O5
العنوانSynergistic effect of vanadium pentoxide and graphene oxide in polyvinyl alcohol for energy storage application
النوعArticle
الصفحات14-27
رقم المجلد76
dc.accessType Abstract Only


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