PVA/CMC-Ag Polymer Blend Nanocomposites Prepared by Doping Bio-Derived Ag Nanoparticles and Their Structural, Thermal, Optical, Antimicrobial, and Electrical Characterization
Gopala Krishna Manne
Department of Physics, Vikrama Simhapuri University, Nellore, India
Contribution: Conceptualization (equal), Data curation (equal), Formal analysis (equal), Investigation (equal), Methodology (equal), Writing - original draft (equal)
Search for more papers by this authorKameswaran Srinivasan
Department of Botany, Vikrama Simhapuri University College, Kavali, India
Contribution: Conceptualization (supporting), Formal analysis (supporting), Investigation (supporting), Writing - original draft (supporting)
Search for more papers by this authorCorresponding Author
Gopal Neeruganti Obularajugari
Department of Physics, Vikrama Simhapuri University, Nellore, India
Correspondence:
Gopal Neeruganti Obularajugari ([email protected]; [email protected])
Contribution: Conceptualization (lead), Data curation (lead), Formal analysis (lead), Investigation (lead), Methodology (lead), Supervision (lead), Writing - original draft (lead)
Search for more papers by this authorRanjit Kumar
Department of Physics, Dr. Kalaignar M. Karunanidhi Government Institute for Postgraduate Studies and Research, Karaikal, India
Department of Physics, Arignar Anna Government Arts and Science College, Karaikal, India
Contribution: Data curation (supporting), Formal analysis (supporting), Writing - original draft (supporting)
Search for more papers by this authorPrathap Pathi
Advanced Materials and Device Metrology, CSIR-National Physical Laboratory, New Delhi, India
Contribution: Formal analysis (supporting), Investigation (supporting)
Search for more papers by this authorNagabhushana Hanumanthappa
Department of Studies & Research in Physics, Tumkur University, Tumkur, India
Contribution: Data curation (supporting), Formal analysis (supporting), Investigation (supporting)
Search for more papers by this authorGopi Krishna Pitchika
Department of Zoology, Vikrama Simhapuri University College, Kavali, India
Contribution: Formal analysis (supporting), Investigation (supporting)
Search for more papers by this authorSwapna Battana
Department of Botany, Vikrama Simhapuri University College, Kavali, India
Contribution: Investigation (supporting)
Search for more papers by this authorRamakrishna Mandala
Department of Botany, Vikrama Simhapuri University College, Kavali, India
Contribution: Investigation (supporting)
Search for more papers by this authorGopala Krishna Manne
Department of Physics, Vikrama Simhapuri University, Nellore, India
Contribution: Conceptualization (equal), Data curation (equal), Formal analysis (equal), Investigation (equal), Methodology (equal), Writing - original draft (equal)
Search for more papers by this authorKameswaran Srinivasan
Department of Botany, Vikrama Simhapuri University College, Kavali, India
Contribution: Conceptualization (supporting), Formal analysis (supporting), Investigation (supporting), Writing - original draft (supporting)
Search for more papers by this authorCorresponding Author
Gopal Neeruganti Obularajugari
Department of Physics, Vikrama Simhapuri University, Nellore, India
Correspondence:
Gopal Neeruganti Obularajugari ([email protected]; [email protected])
Contribution: Conceptualization (lead), Data curation (lead), Formal analysis (lead), Investigation (lead), Methodology (lead), Supervision (lead), Writing - original draft (lead)
Search for more papers by this authorRanjit Kumar
Department of Physics, Dr. Kalaignar M. Karunanidhi Government Institute for Postgraduate Studies and Research, Karaikal, India
Department of Physics, Arignar Anna Government Arts and Science College, Karaikal, India
Contribution: Data curation (supporting), Formal analysis (supporting), Writing - original draft (supporting)
Search for more papers by this authorPrathap Pathi
Advanced Materials and Device Metrology, CSIR-National Physical Laboratory, New Delhi, India
Contribution: Formal analysis (supporting), Investigation (supporting)
Search for more papers by this authorNagabhushana Hanumanthappa
Department of Studies & Research in Physics, Tumkur University, Tumkur, India
Contribution: Data curation (supporting), Formal analysis (supporting), Investigation (supporting)
Search for more papers by this authorGopi Krishna Pitchika
Department of Zoology, Vikrama Simhapuri University College, Kavali, India
Contribution: Formal analysis (supporting), Investigation (supporting)
Search for more papers by this authorSwapna Battana
Department of Botany, Vikrama Simhapuri University College, Kavali, India
Contribution: Investigation (supporting)
Search for more papers by this authorRamakrishna Mandala
Department of Botany, Vikrama Simhapuri University College, Kavali, India
Contribution: Investigation (supporting)
Search for more papers by this authorFunding: The authors received no specific funding for this work.
ABSTRACT
This work reports the influence of bio-derived silver (Ag) nanoparticles insertion on the properties of polyvinyl alcohol/carboxymethyl cellulose (PVA/CMC) polymer blend prepared by solution casting method. X-ray diffraction studies reveal the dispersion of silver nanoparticles into polymer blend matrices. Thermal studies by DSC and TGA indicate the increased thermal stability of the polymer blend due to the addition of bio-derived silver nanoparticles. Three different steps of weight loss shown by dTGA curves indicate the loss of water adsorbed, elimination of side chains, and the decomposition of the main chain. The maximum degradation of the pure sample occurred at a peak temperature of around 252°C with 65% of degradation, whereas the maximum degradation of the doped samples occurred at a peak temperature of around 322°C with 26% of degradation, which evidences the increased thermal stability of the doped sample. UV–visible spectral analysis shows a decrease in both direct and indirect band gap values with increasing dopant concentration in the polymer blend host, which is an indication of the formation of complexes between the polymer blend and the filler. The antifungal properties of PVA/CMC/Ag blend films are evaluated against four distinct fungus strains. The findings indicate that the activity index increased with the amount of Ag nanoparticles filled in. According to the study, doping PVA/CMC with Ag nanoparticles increases its antimicrobial efficacy. Since these nanocomposites have both electrical conductivity and antimicrobial properties, they may be suggested for future investigation in biomedical applications, including wound dressing and infection prevention.
Conflicts of Interest
The authors declare no conflicts of interest.
Open Research
Data Availability Statement
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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