Details

Autor(en) / Beteiligte

• Zuber, Mohammad
• Zia, Khalid Mahmood
• Bhatti, Ijaz Ahmad
• Ali, Zobia
• Arshad, Muhammad Umair
• Saif, Muhammad Jawwad

Titel

Modification of cellulosic fibers by UV-irradiation. Part II: After treatments effects

Ist Teil von

• International journal of biological macromolecules, 2012-12, Vol.51 (5), p.743-748

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2012

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• ► Cellulosic fabric was swelled by UV-irradiation for different time intervals (λ=254nm). ► The cellulose fabric was also swelled by applying conventional mercerization technique. ► The UV irradiated and mercerized cellulosic fibers were dyed using direct dyes. ► SEM analysis confirmed the rate of swelling of the cellulosic fiber in either of the treatment. ► The mercerized cellulosic fabrics have shown better tear and tensile strength as compared to the UV irradiated one. 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.