Ferroelectric polarization of β-polyvinylidene fluoride as control and mitigator of infectious organisms

Sushma, Mudigunda V. and Sabarigresan, M. and Jogdand, Anil Bankati and Yadav, Dokkari Nagalaxmi and Rengan, Aravind Kumar and Ramadurai, Ranjith (2022) Ferroelectric polarization of β-polyvinylidene fluoride as control and mitigator of infectious organisms. Materials Today Communications, 32. pp. 1-8. ISSN 2352-4928

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Abstract

In this work, Polyvinylidene fluoride (PVDF), a ferroelectric polymer thin film, was prepared by the solution casting method. The growth of polymer films was optimized to achieve the ferroelectric β–phase with PVDF and, most importantly, ferroelectric domains with dominant planar polarization components. The ferroelectric polarization of these polymers is known to hold surface charges with/without field. The polymer is expected to interact with microbial organisms whose physiological metabolism depends on surface charges. The current COVID-19 pandemic has motivated us to carry out a fundamental study of the interaction between the polarization of the ferroelectric polymers and microbes. The antimicrobial studies were performed, making these polymer films interact with bacterial, viral, and fungal growth environments. Electroded PVDF films were kept in contact with bacterial colonies, and a dc-voltage of 1.5 V was applied across the electrodes. The film was subjected to 1.5 V and kept in contact with the culture before the growth initiation, and the microbial growth was hindered entirely. It never occurred either beneath or over the surface of the films. Thus, in the presence of the electric field, the microbial growth was inhibited, even in a conducive environment.

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IITH Creators:

IITH Creators	ORCiD
Rengan, Aravind Kumar	https://orcid.org/0000-0003-3994-6760
Ramadurai, Ranjit	http://orcid.org/0000-0003-2991-0027

Item Type:

Article

Additional Information:

Author SM would like to acknowledge the Ministry of Human Resourse Development (MHRD) , India for the fellowship. Author DNY would like to acknowledge Department of Science and Technology, DST-Inspire, (DST/INSPIRE/03/2019/001517) , India for her fellowship. Authors acknowledge Government of India for funding of the following projects: Indian Institute of Technology Hyderabad, (IITH) ID project,Department of Biotechnology (DBT) , NNT (BT/NNT/28/1386/2017) , Ministry of Human Resourse Development (MHRD) IMPRINT (4291) , Department of Science and Technology, DST-Inspire (DST/INSPIRE/04/2015/000377) , CRG DST-AMT (DST/TDT/AMT/2017/227 (G) ) . The authors also acknowledge Vasudha Foundations, Hyderabad, India for their generous financial support.

Uncontrolled Keywords:

PVDF,Ferroelectric polymer,Staphylococcus aureus

Subjects:

Biomedical Engineering
Materials Engineering > Materials engineering

Divisions:

Department of Biomedical Engineering
Department of Material Science Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

26 Sep 2022 04:45

Last Modified:

26 Sep 2022 04:45