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Synthesis, characterization, and thermal behavior of silica aerogel-embedded PVDF-HFP nanofibers

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Abstract

This study aims to improve thermal insulation by incorporating silica aerogel into PVDF-HFP nanofiber membranes. The nanofiber membranes were created using needleless electrospinning, with careful optimization of voltage and polymer concentration. Silica aerogel was synthesized via the sol–gel ambient drying method. To integrate silica aerogel particles into PVDF-HFP nanofiber two approaches were used. First, ex-situ, involving the mixing of silica aerogel particles with the PVDF-HFP polymeric solution in predetermined proportions prior to electrospinning, and in-situ, which entailed synthesizing silica aerogel within pre-fabricated PVDF-HFP nanofiber membranes. Multiple analytical tools SEM, EDX, BET, FTIR, and TGA–DSC, were used to assess the composition, microstructure, pore-size, and thermal behavior of PVDF-HFP nanofiber embedded with silica aerogel. It was evident that the in-situ method proved to be more effective in reducing the thermal conductivity, more breathable, and water repellent making it a preferred choice for extreme cold-weather protection.

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Acknowledgments

We thank The Bombay Textile Research Association (BTRA, Mumbai) for support in synthesizing and characterizing nanofibers, utilizing the Nanospider facility and SEM analysis. We also extend our appreciation to DST-FIST Analytical Instrumentation Laboratory, Jaysingpur College Jaysingpur, Sophisticated Analytical Instrument Facilities (DST- CFC) Shivaji University, Kolhapur for providing characterization facilities BET, ATR-FTIR, TGA-DSC.

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    Prashant D. Jinde & M. Y. Gudiyawar

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The list of authors for this paper and their respective contributions is as follows: PDJ (Corresponding Author)—Conceptualization, Methodology, Formal Analysis, Data Curation, Investigation, Writing—Original Draft. Prof. (Dr.) MYG (co-author)—Validation, Resources, Supervision. We (the corresponding author and co-author) confirm that, to our knowledge, all the claims, statements, and conclusions are true and are our jointly held opinions. We confirm that the manuscript has been approved by all named authors and that there are no other persons who satisfied the criteria for authorship but are not listed.

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Jinde, P.D., Gudiyawar, M.Y. Synthesis, characterization, and thermal behavior of silica aerogel-embedded PVDF-HFP nanofibers. Journal of Materials Research (2024). https://doi.org/10.1557/s43578-024-01317-5

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