Automatic identification of ramie and cotton fibers based on iodine blue reaction, Part I: the optimum conditions for the iodine blue reaction of cellulose

作者：Jia, Li Feng^*; Yang, Man; Liu, Yue; Sun, Lan

来源：Textile Research Journal, 2016, 86(8): 848-855.

DOI：10.1177/0040517515596970

• iodine blue reaction of cellulose
• staining techniques
• identification of cotton and ramie
• optimum conditions
• colorant
• swelling reagent

A new iodine blue staining technique to distinguish ramie fibers from cotton fibers was presented. The influencing factors on staining color, including temperature, concentration of iodide anions in I-2-YI solution, ratio of the volumes of added I-2-YI solution and saturated LiX solution, time, and concentrations of alkali metal cation Y+ and halide anion X-, were investigated to maximize the difference in color between stained cotton and ramie fibers. The optimum conditions were as follows: temperature: -15?; concentration of iodide anion in colorant: 1/5; volume ratio: 1/20; colorant: I-2-LiI solution; swelling reagent: saturated LiCl solution. The experimental results showed that the new staining technique can be useful for automatic identification of cotton and ramie fibers.

• 出版日期2016-5
• 单位厦门大学; 广东工业大学