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Preparation method of enzymatic wheat straw cellulose microfibrils

A technology for cellulose microfibrils and wheat straw, which is applied in the preparation of cellulose microfibrils (CMF), the preparation of enzymatically catalyzed wheat straw cellulose microfibrils, and the field of preparation, can solve the problems that the research is still in its infancy, etc. Excellent mechanical properties and transparency, excellent suspension stability, high surface charge effect

Inactive Publication Date: 2022-06-07
ZHEJIANG JINCHANG SPECIALTY PAPER CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0009] The above methods are more suitable for the preparation of cellulose microfibrils (CMF) from tree fibers, but the research on the preparation of cellulose microfibrils (CMF) from crop straws has just started

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  • Preparation method of enzymatic wheat straw cellulose microfibrils
  • Preparation method of enzymatic wheat straw cellulose microfibrils
  • Preparation method of enzymatic wheat straw cellulose microfibrils

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Embodiment Construction

[0022] The technical solutions of the present invention will be completely described below with reference to the embodiments of the present invention, and the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] 1. Example 1.

[0024] The preparation method of the enzymatic wheat straw cellulose microfibril includes the following two parts:

[0025] 1. Pretreatment of wheat straw enzymes: According to the dosage of 5 FPU / g of composite cellulase, it is added to the oxidized wheat straw fibers for pretreatment.

[0026] 2. Pressure-driven homogenization treatment of wheat straw: Select the above-mentioned fibers with a yield of 70% after enzyme pretreatment, prepare a fiber suspension with a concentr...

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Abstract

The invention relates to a preparation method of enzymatic wheat straw cellulose microfibrils, which comprises the following steps: adding one of 3-6 FPU / g of compound cellulase, 3-6 of endoglucanase and 15-25 MCU / g of exoglucanase into oxidized wheat straw fibers for pretreatment according to the dosage of 3-6 FPU / g of compound cellulase, 3-6 of endoglucanase and 15-25 of exoglucanase; selecting the fibers with the yield of 70-80% after enzyme pretreatment, preparing into a fiber suspension with the concentration of 0.8-1.0%, stirring and dispersing, then performing pressure-driven homogenization treatment on the fiber suspension for 5-40 times, and controlling the pressure to be 70-90 MPa, so as to prepare the wheat straw cellulose microfibril. With the adoption of the method, the microfibrils with excellent hydrophilicity, mechanical property and transparency are obtained by performing enzyme pretreatment and pressure-driven homogenization treatment on the wheat straw fibers, a new idea is provided for relieving the pressure of cellulose resources, and the method has very important research significance and a great prospect.

Description

technical field [0001] The invention relates to a preparation method of enzymatically catalyzed wheat straw cellulose microfibrils, belonging to the technical field of novel nano-biomass materials, in particular to a method for preparing cellulose microfibrils (CMF) by using an enzyme pretreatment combined with a pressure-driven homogenization method ), used in the preparation of optical films, pulp and paper, etc. Background technique [0002] In recent years, the world resource and energy crisis has become increasingly serious, and fully exploiting the availability and potential application value of plant fibers has become an important research direction for domestic and foreign researchers. Plant cellulose is a green macromolecular material with large reserves, renewable and degradable on the earth, and its wide application cannot be ignored. Pulp and paper, high-performance reinforced composite materials and a series of chemical fields are closely related to it. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00
CPCD21C5/005D21C5/00Y02E50/10
Inventor 张求荣华飞果孟育童树华徐玉清杨宗建郑红余徐欢章民
Owner ZHEJIANG JINCHANG SPECIALTY PAPER CO LTD
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