STUDY ON PERFUME SUSTAINED-RELEASE FROM COTTON FABRIC TREATED WITH POLYSTYRENE MICROSPHERES

Encapsulation is a suitable way to control fragrance release and to make perfumed textiles more durable. Polystyrene-based microparticles containing fragrance were produced by in-situ polymerization technique with neroline as a core material and polystyrene as wall material. The chemical structure of the microspheres was confirmed by IR and 1H NMR spectroscopies. Spherical shape and particle size distributions of microparticles were revealed by means of optical microscopy, scanning electron microscopy (SEM) observations and small-angle light scattering measurements. The encapsulation efficiency of perfume, determined by using 1H NMR analysis, accounts for 55%. Neroline-loaded microspheres have been investigated for their properties and their suitability for cosmetotextile applications. The microspheres were deposited onto cotton fabrics by an impregnation process with about 76 % yield. The durability and the perfume release behaviour of the impregnated textile were evaluated through SEM observations and UV-visible spectroscopy.