Indirect Measurement of Thermal Insulation Properties of Two-Layer Functional Textile Structures Incorporating Nanomaterials

This study presents an expeditious and efficacious methodology for the preliminary assessment of thermal properties in textile composites, specifically a conventional denim-type cotton fabric and an applied nanofiber mat of varying compositions. Thermal conductivity was determined utilizing a ThermaCAM® P45 thermal imaging camera (FLIR) and corresponding software. A standard electrospinning technique was employed to produce a nanomat from four distinct types of two-component solutions based on polyvinylalcohol (PVA): pure PV A, PV A combined with beeswax (PVA/BW), PV A with two species of algae, Chlorella (PVA/Ch), and Spirulina (PV A/Sp). The findings are presented for the mass, thickness, air, and vapor permeability of the nanomat, contingent upon the composition of the polymer two-component solution. This investigation demonstrates that the cotton-PVA/BW structure exhibits superior thermal insulation properties, with a A value of 0.157 W/mK, whereas pure Denim exhibits a A value of 0.2543 W/mK.