TY - JOUR
T1 - A combined experimental and computational study of flexible polyvinyl alcohol (PVA)/graphene oxide (GO) nanocomposite films for superior UV shielding with improved mechanical properties
AU - Mruthyunjayappa, Kavitha Cheelangi
AU - Paramashivaiah, Shashidhar Anivala
AU - Mallikarjunappa, Eshwarappa Kunabevu
AU - Padre, Shilpa Molakkalu
AU - Gurumurthy, S. C.
AU - Surabhi, Srivathsava
AU - Jeong, Jong Ryul
AU - Valentina Morales Montecinos, Daniela
AU - M S, Murari
N1 - Funding Information:
The authors are grateful to Mr. Vinay R and Dr. H S Basavaraj, SJM Pharmacy College, Chitradurga for extending us to utilize FTIR and UV-Vis spectrometer. Also, the authors are thankful to Mr. Sandeep S H, GM Institute of Technology College, Davanagere, Karnataka for helping us in characterizing the mechanical properties. Srivathsava Surabhi ( FONDECYT Project No 3200832 ), and D. V. Morales (FONDECYT Project No 3200467 ) are acknowledging the Programa Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT) de la Agencia Nacional de Investigación y Desarrollo , Chile. Jong-Ryul Jeong (Project No 2020R1A2C1006136 ) is thankful to the NRF-South Korea, while all of them are grateful for the invaluable support of ESSS (Engineering Simulation Scientific Software), Chile SPA.
Funding Information:
The authors are grateful to Mr. Vinay R and Dr. H S Basavaraj, SJM Pharmacy College, Chitradurga for extending us to utilize FTIR and UV-Vis spectrometer. Also, the authors are thankful to Mr. Sandeep S H, GM Institute of Technology College, Davanagere, Karnataka for helping us in characterizing the mechanical properties. Srivathsava Surabhi (FONDECYT Project No 3200832), and D. V. Morales (FONDECYT Project No 3200467) are acknowledging the Programa Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT) de la Agencia Nacional de Investigación y Desarrollo, Chile. Jong-Ryul Jeong (Project No 2020R1A2C1006136) is thankful to the NRF-South Korea, while all of them are grateful for the invaluable support of ESSS (Engineering Simulation Scientific Software), Chile SPA.
Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/6
Y1 - 2023/6
N2 - The optical and mechanical properties of PVA (polyvinyl alcohol)/GO (graphene oxide) have been intensively studied for promising applications of GO-related materials in various technical fields. In this study, PVA (polyvinyl alcohol)/GO (graphene oxide) composite films have been fabricated via a simple solution casting process and analytically investigated for the UV shielding applications. The weight percentage (wt%) of GO is varied sequentially from 0% to 2.5% (with an interval of 0.5%) in order to examine their optical and mechanical functionality by tuning the structural and morphological aspects of the films. The synthesized films were scrutinized through typical optical and mechanical characterizations unveiling their promising features, which are in coherence with finite difference time domain (FDTD) simulations. FTIR and UV–visible spectroscopic studies confirm the strong interaction between GO and PVA where the localized electronic states of GO can simultaneously add optical transitions and spin moments to the sp2 nanodomains of GO nanosheets. The formation of intercalated nanolaminate structures, hydrogen-bonding interactions, and tuning the crystalline structure of PVA within the composite films as confirmed by XRD and atomic force microscopy (AFM). The 2.5 wt% GO/PVA film shows excellent improvement in tensile strength by 43.65% compared to the pure PVA while the toughness is enhanced from 54.94 MJ m −3 to 63.14 MJ m −3. This poises a superior UV absorption leveraging with optimal point of tensile strength vs elongation at break compared to other PVA/GO nanocomposite films. Stress-strain response studies show improved mechanical properties, and UV transmission studies designate that they are excellent candidates for UV shielding and authorize their employability in relevant applications.
AB - The optical and mechanical properties of PVA (polyvinyl alcohol)/GO (graphene oxide) have been intensively studied for promising applications of GO-related materials in various technical fields. In this study, PVA (polyvinyl alcohol)/GO (graphene oxide) composite films have been fabricated via a simple solution casting process and analytically investigated for the UV shielding applications. The weight percentage (wt%) of GO is varied sequentially from 0% to 2.5% (with an interval of 0.5%) in order to examine their optical and mechanical functionality by tuning the structural and morphological aspects of the films. The synthesized films were scrutinized through typical optical and mechanical characterizations unveiling their promising features, which are in coherence with finite difference time domain (FDTD) simulations. FTIR and UV–visible spectroscopic studies confirm the strong interaction between GO and PVA where the localized electronic states of GO can simultaneously add optical transitions and spin moments to the sp2 nanodomains of GO nanosheets. The formation of intercalated nanolaminate structures, hydrogen-bonding interactions, and tuning the crystalline structure of PVA within the composite films as confirmed by XRD and atomic force microscopy (AFM). The 2.5 wt% GO/PVA film shows excellent improvement in tensile strength by 43.65% compared to the pure PVA while the toughness is enhanced from 54.94 MJ m −3 to 63.14 MJ m −3. This poises a superior UV absorption leveraging with optimal point of tensile strength vs elongation at break compared to other PVA/GO nanocomposite films. Stress-strain response studies show improved mechanical properties, and UV transmission studies designate that they are excellent candidates for UV shielding and authorize their employability in relevant applications.
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U2 - 10.1016/j.mtcomm.2023.105662
DO - 10.1016/j.mtcomm.2023.105662
M3 - Article
AN - SCOPUS:85149331513
SN - 2352-4928
VL - 35
JO - Materials Today Communications
JF - Materials Today Communications
M1 - 105662
ER -