Properties of Aroma Sustained-release Cotton Fabric with Rose Fragrance Nanocapsule

The aroma sustained-release cotton fabric was prepared by finishing rose fragrance nanocapsules directly on cotton. The structure and properties of nanocapsules were demonstrated by transmission electron microscope (TEM), dynamic light scattering (DLS), fourier transform infrared spectrometer (FTIR), X-ray diffraction (XRD), gas chromatography-mass spectrometry (GC-MS) and electronic nose. The results showed that the spherical nanocapsule dispersed evenly and the average diameter kept 51.4 nm. The existence of -COO peak (1741 cm(-1)) in the FTIR curve of the finished cotton fabric and the decrease of crystallinity demonstrated that rose fragrance nanocapsules have been incorporated into the cotton fabrics. The washing resistance of the cotton fabrics finished by 51.4 nm nanocapsules was much better than that by rose fragrance alone. Besides, the loss of fragrance from the cotton fabrics finished by 51.4 nm nanocapsules was obviously lower than that by 532 nm nanocapsules and rose fragrance. The smaller the nanocapsule size, the better the sustained release property. Electronic nose analysis also displayed that the aroma released from the cotton fabrics finished by nanocapsules after washing has no obvious variety in contrast to that without washing. The cotton fabrics finished by nanocapsules has the excellent sustained release property.