The highintensity ultrasonication was used in a batch process to isolate fibers from severalcellulose sources. Using this process a mixture of microscale and nanoscale fibers was obtained Compared with above mentioned materials, alkaline peroxide mechanical pulp,a relatively new process called the alkaline peroxide mechanical pulping (APMP) process reportedly produces pulp approaching the quality of chemical pulp while having yield and environmental impact approaching that of mechanical pulps. Meanwhile, it also had a relative high crystallinity .