Abstrait

Certification Organic Cotton by Nanotechnology. Mecatronics And Informatics Applied In New Technology

Ing. Iba Gaye Ph.D (SENEGAL)

This work presents a comparison of the properties of conventional and organic cotton, using apparatus which are available at the Faculty of Textile and TUL, an analysis of cotton was made with the raster electron microscope SEM VEGA TS 5130, the physicochemical properties with GC / MS, analytical method of gas chromatography, the mechanical properties of both types of cotton were studied in Labor dynamometer test, strength was measured using Pressley Tester instrument response and fibers on the dynamic mechanical analyzer DMA., cotton maturity was determined using a polarizing microscope, using the apparatus Micronaire for fineness, staple length with staple diagram, thermal properties with the differential scanning calorimeter (DSC) and thermo gravimetric analyzer TGA. To detect the presence of pesticides in samples of cotton, gas chromatography with mass was employed and the results were compared to those obtained from the gas chromatography mass spectrum GC / MS. On the basis of these results it was concluded that the gas chromatographic method can be used to detect pesticides in cotton samples and can be applied to all natural fibers of plant origin. In this way, they can be distinguished as organic and conventional cotton, thus contributing to the certification of organic cotton and substances of vegetable origin. Analysis, which is introduced in this thesis, demonstrates difference in conventional and organic cotton from Senegal, Egypt, Russia and India.