Highly thermally resistant hydrophobic poly(vinyl alcohol)-silica hybrid nanofibers

Abstract

In this paper, the preparation of hydrophobic and crosslinked poly- (vinyl alcohol)/silica organic?inorganic hybrid nanofibers via the sol?gel electrospinning method is reported. Silica was produced through the acetic acid catalyzed reaction of a silica precursor consisting of dimethyldimethoxysilane (DMDMOS), methyltrimethoxysilane (MTMS), tridecafluoro-1,1,2,2-tetrahydrooctyltriethoxysilane (FAS1313; Dynasylan? F 8261) and phenyltrimethoxysilane (PTMS; Dynasylan? 9165) in a 2-propanol?water mixture. Hybrid nanofibers were obtained by electrospinning the silica precursor and an aqueous PVA solution. Chemical, structural, thermal and surface analyses were conducted by Fourier-transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy/energy-dispersive X-ray (SEM/EDX) and water contact angle (WCA) methods, respectively. The obtained hybrid nanofibers were insoluble in aqueous solution. SEM images displayed that highly crosslinked and porous structures were obtained and the average fiber diameters of poly(vinyl alcohol) (PVA)/silica nanocomposites were around 70 nm. A nanofiber surface with a water contact angle of 130? was achieved.

Study on the superhydrophobic coatings with antifouling and anticorrosion properties

“…22 Hulusi et al successfully prepared poly(vinyl alcohol)/silica nanofibers with network structure by electrospinning technology, which have good heat resistance and hydrophobicity. 23 Rasitha et al successfully fabricated superhydrophobic coatings on robust aluminum (Al) surfaces with enhanced corrosion resistance and antifouling ability. The coating showed anti-adhesive properties against Gram-negative ( Pseudomonas sp.)…”

Preparation and Characterization of Ferulic Acid Wheat Gluten Nanofiber Films with Excellent Antimicrobial Properties

“…In addition, WG exhibits outstanding film-forming properties, and its molecular structure contains numerous inter/intra-chain disulfide and hydrogen bonds, rendering it a superior raw material for electrospinning [17]. PVA is frequently utilized as a fundamental component for electrospinning blends, owing to its favorable biocompatibility and full biodegradability [18]. Previous studies have proven that both are suitable raw materials for loading active molecules.…”