Preparation method for degummed kenaf fiber

A technology of fine-drying hemp and kenaf, which is applied in the chemical post-treatment of fibers, textiles and papermaking, and fiber treatment. It can solve the problems of rough fiber surface, poor fiber color, and large fiber damage, and achieve smooth and soft fiber surface. Improved spinnability and reduced damage rate

Inactive Publication Date: 2014-06-04
于丰韬
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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

Method used

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Embodiment Construction

[0032]A preparation method of kenaf fine-dried hemp. The method uses a degumming method combining vacuum technology, an enzyme system and an ultrasonic technology to degumming kenaf bast fibers. First, a mixed enzyme system is used to degumming kenaf under vacuum conditions. Using vacuum negative pressure technology, the enzyme liquid can fully enter the fiber, which can break the water-insoluble colloidal macromolecules, and at the same time, part of the lignin is also decomposed, so that the bonded kenaf bast fibers can be separated into soluble fibers. Utilized craft fibers. Then use a lower frequency ultrasonic treatment to remove the colloid that has a strong binding force with the fiber, and finally use a higher frequency ultrasonic treatment to remove the residual colloid in the fine parts such as micropores and gaps.

[0033] In the present invention, the main technical process and auxiliary process based on vacuum enzyme and ultrasonic technology are as follows:

[0...

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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 ...

Claims

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Application Information

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IPC IPC(8): D01C1/00
Inventor 姜著川
Owner 于丰韬
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