Improvement the Washing Fastness of Fabrics with Water Repellent Finish via UV-Curable Coatings


YILDIZ Z. , ÖNEN H. A. , Dehmen O. G. , GÜNGÖR A., KOÇAK E. D.

17th NATIONAL 3rd INTERNATIONAL THE RECENT PROGRESS SYMPOSIUM ON TEXTILE TECHNOLOGY AND CHEMISTRY, 20 - 22 Kasım 2019

Özet

Among all cellulose derivatives, cellulose acetate butyrate (CAB) shows some superior properties such as high scratch resistance, and being economical. The high viscosity of CAB in molten state restricts the processability property of CAB. Besides that, the low thermal stability of CAB leads a narrow processability range between the melting and decomposition temperatures. Researches regarding the solution of these problems are so limited in literature and there is no research considering the modification of the CAB by using urethane based oligomers (Çakmakçı et al., 2012, El-Sakhawy et al., 2014, Wang et al., 2017). In this study, in order to eliminate the undesired properties of CAB, the hydroxyl groups on CAB were partially reacted with toluene diisocyanate-2-hydroxyethyl methacrylate (TDI-HEMA) adduct with the aim of the formation of carbamate ester and UV-functional acrylate groups on CAB structure. The chemical modifications were followed by using FTIR and 1H NMR spectroscopies. Then the obtained modified oligomer was included in the preparation of UV-coating formulations on cotton fabrics with water repellent finish. It was aimed to improve the washing fastness of water repellent finish of cotton fabrics. The thickness increment stemming from the water repellent finish and UV-coating on fiber surface was investigated by light microscopy. The water repellency property of fabrics were evaluated by using spray test (AATCC 22) and absorbency test (AATCC 79), respectively. The effects of UV-coating on abrasion resistance of fabrics were also investigated.