Turmeric dyed textiles for washing alkalinity warning
By utilizing the color change characteristics of curcumin compounds in alkaline solutions and considering the impact of alkalinity on wool and silk fibers,a turmeric dyed fabric label that can be used for washing alkalinity indication has been developed.Using wool and silk as research objects,the damage of fibers and the discoloration of dyed fabrics caused by alkali treatment with different pH values are investigated,and their durability is tested.The results show that the turmeric dyed fabric exhibits a color change pattern of yellow,orange,red,and brownish red with the increase of environmental alkalinity;When the washing pH value is ≥9,the damage to wool and silk fibers is more obvious,and the color of dyed fabrics changes from yellow to orange or red.Therefore,the acid-base discoloration effect of turmeric can be used to quickly and intuitively identify whether the approximate pH of washing water is suitable for protein fibers.Turmeric dyed fabric labels are reusable,and can be applied to the daily care of protein textiles.
woolsilkplant dyescolor changing textilesturmericpH value indication
万方数据
维普
