Method for preparing viscose fiber by sisal leaves

Abstract

The invention relates to a method for preparing viscose fiber by sisal leaves. The method comprises the following steps: (1) sorting the sisal leaves; (2) adopting mechanical knocking or roll compacting, carrying out devillication with a carding method so as to scrap off diachyma colloid of the sisal leaves, carrying out water washing, and obtaining sisal leaves cellulose base fiber; (3) carrying out fermentation treatment in a microorganic mould solution and then peroxide treatment so as to remove residual colloid; (4) preparing soda cellulose; (5) etiolating and dissolving the soda cellulose to obtain filature serosity; (6) defoaming the filature serosity; and (7) wet spinning. The invention has the advantages that the method fully utilizes the waste sisal leaves to prepare the viscose fiber and improves the economic value of the sisal leaves; peroxide is used for replacing sodium sulfite, sodium bisulfite, ammonium oxalate, ammonium citrate in the ZL200510111703.2 biological-chemical method patent; and the discharged sewage contains no inorganic matters but polysaccharide compounds which are biologically degradable, and more conforms to the environment friendly requirement.

Description

technical field

[0001] The invention belongs to the technical field of synthetic fiber production, in particular to a method for producing viscose fiber by extracting cellulose from sisal leaves. Background technique

[0002] Sisal, also known as sisal, is a kind of agave hemp, belonging to the genus Agave Linnaeus of the family Agavaceae. It is named for its shape resembling a sword. It is native to Central America and has a cultivation history of more than 80 years in my country. As early as 1901, my country introduced it from the Philippines to Hengchun, Kaohsiung, and Qishan in Taiwan for cultivation. In 1928, some overseas Chinese imported dozens of sisal seedlings from the Philippines to Hainan Island for planting, and later spread to other regions. At present, the planting area of ​​sisal in my country is 15,000 hm 2 , The total fiber output is 37,000 tons, ranking first in the world, and the planting areas are mainly distributed in Guangdong, Guangxi, Hainan, Fujia...