Preparation method for degummed kenaf fiber

Abstract

The invention provides a preparation method for a degummed kenaf fiber. According to the method, vacuum technology, an enzyme system and ultrasonic technology are combined together for degumming of kenaf bast fibers. The method comprises the following steps: carrying out degumming on a kenaf fiber by using a mixed enzyme system, allowing enzyme liquid to fully penetrate into the fiber by using vacuum negative pressure technology and allowing gum macro-molecule insoluble in water to fracture and a part of lignin to be decomposed at the same time; and removing gum strongly bonding with the fiber by using low-frequency ultrasonic waves and finally, removing residual gum in tiny parts like micropores and slits by using high-frequency ultrasonic waves. The method overcomes the problems of a great amount of residual gum, rough fiber surface and the like in conventional degumming with a single biological enzyme, improves the quality of the degummed kenaf fiber and reduces the usage amount of the enzyme and chemicals.

Description

technical field [0001] The invention relates to the technical field of hemp degumming, in particular to a preparation method of fine-dried kenaf. Background technique [0002] Kenaf fine dry hemp is degummed hemp fiber from raw kenaf hemp. [0003] Raw kenaf contains a variety of different chemical components, of which the cellulose content is about 60%, and the remaining non-cellulose components are colloids. Most of the pectin is hemicellulose and lignin, most of these colloids surround the surface of the fiber, and the hemicellulose is accompanied by the cellulose, forming a network structure, and pectin cements the hemicellulose and other impurities with the cellulose together. Therefore, in the refined treatment of kenaf, degumming is the basic and key process, and the effect of degumming directly affects the output and quality of fibers, and then affects the further processing. [0004] The methods used in kenaf degumming mainly include physical degumming, chemical ...

AI Technical Summary

Problems solved by technology

[0011] The first object of the present invention is to provide a novel preparation method of fine-dried kenaf. Compared with traditional chemical degumming and physical degumming methods, this degumming method can produce high-quality kenaf bundle fibers and solve the problem of fiber damage. Large size, serious environmental pollution, etc., and the strength, feel, and color of the fiber all meet the requirements of textile processing.

[0012] The second purpose of the present invention is to provide a new type of kenaf fine-dried hemp preparation process formula for the problems of incomplete degumming, rough fiber surface, poor fiber color and other problems in the current single degumming method