title: Biodegradation of cotton and cotton/polyester fabrics impregnated with Ag/TiO2nanoparticles in soil.
abstract: This study discusses the biodegradation behavior of cotton and cotton/PET fabrics impregnated with Ag/TiO2nanoparticles in soil. Biodegradation behavior was evaluated by standard test method ASTM 5988-03 based on determination of percentage conversions of carbon content to CO2as well as by soil burial test and enzymatic hydrolysis with cellulase where the extent of biodegradation was estimated by the calculation of fabric weight loss. The morphological and chemical changes of fibers during biodegradation process were analyzed by SEM and FTIR spectroscopy, respectively. The results obtained by all applied methods suggested that Ag/TiO2nanoparticles hindered the biodegradation of investigated cotton and cotton/PET fabrics. Soil burial test indicated faster biodegradation of the impregnated blend compared to impregnated cotton fabric which is attributed to smaller amount of fabricated Ag nanoparticles on the blend proved by AAS measurement. Similar trend was established by enzymatic hydrolysis of cotton fibers. Severe damage of cotton fibers in both fabrics due to biodegradation process was confirmed by SEM. However, the cotton fiber damage occurred to a lesser extent in the samples that were impregnated with Ag/TiO2nanoparticles. PET fibers remained intact which was also indicated by FTIR analysis.
authors.affiliation: University of Belgrade, "Vinča" Institute of Nuclear Sciences, P.O. Box 522, 11001 Belgrade, Serbia.
authors.forename: Milica
authors.initials: M
authors.lastname: Milošević
authors.affiliation: University of Belgrade, Faculty of Technology and Metallurgy, Karnegijeva 4, 11120 Belgrade, Serbia.
authors.forename: Ana
authors.initials: A
authors.lastname: Krkobabić
authors.affiliation: University of Belgrade, "Vinča" Institute of Nuclear Sciences, P.O. Box 522, 11001 Belgrade, Serbia.
authors.forename: Marija
authors.initials: M
authors.lastname: Radoičić
authors.affiliation: University of Belgrade, "Vinča" Institute of Nuclear Sciences, P.O. Box 522, 11001 Belgrade, Serbia.
authors.forename: Zoran
authors.initials: Z
authors.lastname: Šaponjić
authors.affiliation: University of Belgrade, Faculty of Technology and Metallurgy, Karnegijeva 4, 11120 Belgrade, Serbia.
authors.forename: Tamara
authors.initials: T
authors.lastname: Radetić
authors.affiliation: University of Belgrade, Faculty of Technology and Metallurgy, Karnegijeva 4, 11120 Belgrade, Serbia. Electronic address: maja@tmf.bg.ac.rs.
authors.forename: Maja
authors.initials: M
authors.lastname: Radetić
mesh_terms: D001673:Biodegradation, Environmental; D032561:Cotton Fiber; D053768:Metal Nanoparticles; D011091:Polyesters; D012987:Soil; D013784:Textiles; D014025:Titanium
chemical_list: D011091:Polyesters; D012987:Soil; C009495:titanium dioxide; D014025:Titanium
keywords: Ag/TiO(2) nanoparticles; Biodegradation; Cotton; Cotton/PET; Soil