Preparation Of Bamboo Fiber, Bamboo Residue

In this paper, the process of making bamboo fiber from bamboo residue, which was the leftover of the procedure of extracting the bamboo-drained-succus by rolling the Ci-bamboo, was studied in stress. On the basis of analyzing the difference in performance between bamboo residue and raw bamboo, we extracted bamboo pulp containing cellulose which can be spun from bamboo residue by means of physical, chemical and biological methods. And then spun bamboo pulp into a new kind of regenerated cellulosic fiber-bamboo fiber.In the process of the investigation, we started the study from preparing bamboo pulp in laboratory. Based on the optimal procedure, we made two kinds of bamboo pulp with different processes in pilot production. After measurement, the discrepancy between the two kinds of bamboo pulp and the relevant standard was one to six in the index of the alpha cellulose content, the degree of whiteness and the Fe content etc. These were the key problems that should be investigated.The content of alpha cellulose in pulp is an important index of the quality. To deal with the problem of the low content of alpha cellulose in bamboo pulp, we chosen three kinds of enzyme in treating the bamboo pulp, and studied the influence of different methods upon the content of alpha cellulose in it, and picked out the best treating process. After the bamboo pulp's being treated by the enzyme in different methods, the content of alpha cellulose in bamboo pulp was enhanced to different extent respectively. This is the first time in the relevant researches that enzymes were used to enhance the content of alpha cellulose in pulp.We found that it was good for the bamboo pulp to be treated with the enzyme combined with H₂O₂ bleaching. The treating quality can be enhanced by the treatment of enzyme after H₂O₂ bleaching(Pâ†'X). Compared with bleaching with H₂O₂ and treating with enzymes respectively, the whiteness, degree of polymerization and content of alpha cellulose were improved greatly.As the Fe content would affect the performance of spinning, different acids and auxiliaries were used to remove impurity containing Fe element. By comparison with monocomponent and polycomponent in the experiment, it was found that the mixture of HCl, oxalic acid and EDTA can lead to a satisfactory result.The indexes of performance of bamboo pulp had been improved to some extent after a series of treatment. The bamboo pulp was made into spinning dope by chemical technique, and a kind of bamboo fiber with some performance had been acquired by spinning. Finally, the fundamental characteristics of bamboo fiber had been measured with SEM, IR and X-ray etc.