Study on the Purification of Lignincellose Fiber from Eucalyptus camaldulensis Wood
Lignincellose fiber was one of special fibers which were used for textilefiber, paper, engineering plastics, etc. And Eucalyptus camaldulensis has been widely planted in south China. Therefore, based on the single-factor method, the fresh Eucalyptus camaldulensis wood flour were treated by means of the alkali liquor extraction to obtain the best purification of lignincellose fiber. The results are as follows: During the the sorbitic-extracting process, MPC had significant influence on leaching rates of wood extractives and hemicelloses at 0.01 level. And sort of alkaline had significant effect on the leaching rates at 0.05 level. The optimum concentration of NaOH liquor, KOH liquor, LiOH liquor was 20.0%, 17.5%, and 12.5%, separately. The leaching rates was the highest when extraction time was 24 h. The optimum alkali liquor was NaOH liquor. The next was KOH liquor, LiOH liquor. Key wordslignincellose fiber; wood extractives; hemicellose; Eucalyptus camaldulensis; Caustic alkali