The proposed bi-functional protective structure intended to have hydrophilic interior towards the skin surface and hydrophobic exterior for protection, ensuring fast transfer of moisture between body and external environment. The sandwich structure is prepared using 100% wool jersey and varieties of 100% polyester fabrics. Hydrophilic treatments were given using cutinase (fusarium solani pisi) enzyme and commercial hydrophilic softener Ruco Pur Sly®. The polyester fabrics were given a hydrophobic treatment with Ruco Dry Eco® - a commercial cationic water repellent preparation. Variables include enzyme treatment time, and change in pressure to achieve suitable wet pick up at foulard. Several wool-polyester sandwich structures with optimum hydrophilic/hydrophobic properties were made by thermal adhesion using thin polyamide layer. Drop test and vapour permeability test were conducted to evaluate wetting properties and breathability of the samples. Sandwich structure comprising hydrophilic wool-jersey and hydrophobic PES spacer fabric showed the highest value for water vapour permeability.
Paper written by the Saxion chair Smart Functional Materials and the Technical University of Iasi, Romania, for and accepted by the Autex Conference 2013.