title: Modification of cellulosic fibers by UV-irradiation. Part II: after treatments effects.
abstract: This work presents the comparative study on the dyeing behavior of cellulose fibers in alkaline solutions and under the influence of UV radiation. The cellulosic fabrics were pretreated followed by conventional mercerization technique or treatment with UV irradiation. For different time duration the reorganization of cellulose fibers by swelling treatments in alkaline solutions results in numerous structural modifications, causing changes of their accessibility and/or reactivity. The results revealed that the swelling of the cellulosic fibers depends on type of pre-treatment, dose of the radiation and the concentration of alkaline solution used. SEM analysis confirmed that UV irradiation of the cellulosic fibers leads to a higher swelling in comparison with any concentration of NaOH treatment. In comparison of both the treatments, the mercerized cellulosic fibers have shown better tear and tensile strength as compared to the untreated and UV irradiated one. There is adverse effect of UV radiation on the mechanical properties of UV radiation. Moreover, no loss in weight was observed after exposing the cellulose fabrics surface to UV radiation.
authors: Institute of Chemistry, Government College University, Faisalabad 38030, Pakistan.
authors: Mohammad
authors: M
authors: Zuber
authors: Khalid Mahmood
authors: KM
authors: Zia
authors: Ijaz Ahmad
authors: IA
authors: Bhatti
authors: Zobia
authors: Z
authors: Ali
authors: Muhammad Umair
authors: MU
authors: Arshad
authors: Muhammad Jawwad
authors: MJ
authors: Saif
mesh_terms: D002482:Cellulose / Q000737:chemistry*; D055595:Mechanical Phenomena; D012972:Sodium Hydroxide / Q000737:chemistry; D013499:Surface Properties; D014466:Ultraviolet Rays
chemical_list: D012972:Sodium Hydroxide; D002482:Cellulose