This paper is to research on the dyeing effect of natural plant dyestuffs such as rhubarb and turmeric on cellulosic fiber fabrics by color stripping experiments. The dyeing effects of natural plant dyestuffs used in modified cotton and unmodified cotton is tested respectively by glacial acetic acid stripping extraction experiment, 25% pyridine aqueous extraction experiment, pyridine oxalate extraction experiment and DMF stripping extraction experiment. The unmodified cotton can be completely stripped by glacial acetic acid and 25% pyridine aqueous solution, but they make few effects on modified cotton. There are still some dyes cannot be peeled off on modified cotton by pyridine oxalate solution and DMF stripping experiment. The experiments show that the dyeing effect of natural plant dyestuffs such as turmeric on modified cellulose is better than that on unmodified cellulose.
