Research on Bleaching Processes of Natural Cane Fiber by Ultrasonic

The effects of ultrasonic on bleaching of cane fiber were discussed in this paper. Ultrasonic frequency, ultrasonic time, the concentration of the hydrogen peroxide, temperature and pH value were optimized by the single factor experiment. The bleached fiber was analyzed by X-ray diffraction and Scanning electron microscope. The results showed the optimum processing parameters as follows: ultrasonic time 40 min, ultrasonic frequency 33 KHz (first 20 min); 55 KHz (second 20 min), temperature 90 degrees C and the concentration of the hydrogen 30 ml/L, pH value 10.5. In the above conditions, the best bleaching effect was achieved.