Fabrication of electrospun PDMS-PVA hybrid zinc silicate incorporated nanofibrous membranes for air filtration
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Arjun Sunil Rao
,
Nandini A. Pattanashetti
,
Basapur Guruprasad
Abstract
Development of polymeric nanofibers using the electrospinning technique has found potential candidature for tremendous applications including protective clothing, sensors, energy sectors, tissue engineering, wound healing, air filtration, liquid filtration and cosmetics. This is because of the potentiality of the electrospinning method in producing ultrathin fibers ranging from nano to micrometers. Numerous efforts have been made by researchers using electrospinning techniques to regulate the morphology of the developed fibers. Similarly, various polymers and polymer composites have been employed for the development of fibers using electrospinning techniques for different applications. In the current research work, the electrospun nanofibers were produced from a composite solution of polydimethylsiloxane-polyvinyl alcohol (PDMS-PVA) polymers and synthesized zinc silicate (ZnSiO3) nanoparticles. Nanofibrous membranes were produced from the prepared polymer composite solution using electrospinning under high voltage. A morphological study conducted by scanning electron microscopy revealed uniform fibers with diameters ranging from 142 nm to 410 nm. Wettability studies of the electrospun nanofibrous membrane showed an increase in water contact angle from 43° for pristine PDMS-PVA to 92° for ZnSiO3 loaded membranes thereby indicating enhanced hydrophobicity. Air filtration performance testing on the membranes demonstrated that the filtration efficiency was improved from 63° for P0 to 92° for P3, while the quality factor increased from 0.034 Pa−1 to 0.368 Pa−1. Among all the samples, the membrane P3 demonstrated the best performance, whereas P0 showed the lowest performance. Thus, it can be inferred that the incorporation of ZnSiO3 greatly enhanced the air filtration capability of the composite membranes, thereby making the membranes a suitable candidate for air filtration applications and air quality management.
Acknowledgment
The authors would like to thank Nanomaterials Laboratory, JSS Science and Technology University, Mysuru for supporting the work by providing the equipment facility.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: The authors state no conflict of interest.
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Research funding: None declared.
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Data availability: Not applicable.
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