Improved protection and comfort of barrier clothing via moisture-permeable poly (vinyl alcohol)–superabsorbent polymer nanofibrous membrane

Abstract

Increased growth has been observed in the application area of superabsorbent polymer (SAP), where unique liquid absorption characteristics are the prime concern. Such profound characteristics of SAP have made it an ideal material to employ in barrier clothing for improved moisture absorption. This research presents the development of a novel moisture-absorbent and dust barrier nanofibrous membrane by integrating SAP with poly (vinyl alcohol) (PVA) via electrospinning for reliable protection with enhanced thermal comfort of protective clothing. Morphological investigation through SEM demonstrated the formation of bead-free smooth and homogeneous nanofibers with an average diameter of 173 nm. Peaks of FT-IR spectra confirmed the presence of SAP in nanofibers suggesting the liquid absorbent feature of PVA–SAP membranes. The particle filtration efficiency (>95%) revealed satisfactory resistance of SAP membranes against the penetration of dust particles and microorganisms through the clothing in hazardous environmental conditions. The increased air permeability suggested adequate breathability of SAP membranes to transfer air from the environment to the body and vice versa. The moisture management profile showed progressive liquid absorption characteristics of PVA–SAP nanofibers indicating the increased diffusion of perspiration vapor from the body to the environment through the membrane to provide favorable thermal comfort. The development of such nanofibrous membranes with enhanced breathability and moisture-absorbent features will pave the way for designing protective clothing with simultaneous protection and thermal comfort.

Keywords

• Electrospun nanofibers
• Moisture permeable clothing
• Protective textiles
• Superabsorbent polymer
• Thermal comfort