Composition for changing and improving property of fiber surface and paper making method

A fiber surface and composition technology, which is applied in the field of biological enzymes and the use of biological enzymes to change fibers, can solve the problems of increased fiber loss rate, increased production cost, decreased strength, etc., and can improve physical strength, improve binding force, and change beating performance. Effect

Active Publication Date: 2011-06-08
RISINGSTAR BIOTECH GUANGZHOU
View PDF11 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the research results show that the existing biological enzyme products and application methods are used in pulping and papermaking. Although the drainage performance and some other properties can be improved, the strength of the final paper product is significantly re

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Composition for changing and improving property of fiber surface and paper making method
  • Composition for changing and improving property of fiber surface and paper making method
  • Composition for changing and improving property of fiber surface and paper making method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0057] Example 1: The selective adsorption of CBP on the cellulose surface.

[0058] material : Microcrystalline cellulose and cellulose-binding protein (CBP) were purchased from Sigma Aldrich. Among them, CBP (Sigma Aldrich product number C8581) is a 17kDa fragment extracted from the cellulose mixture of Clostridium cellulovorans, and expressed by E. coli. Microcrystalline cellulose is SigmaAldrichS3504. Microcrystalline cellulose for amorphous cellulose is prepared according to the method described by Schroeder et al. (Schroeder L., Gentile V and Atalla R., "Nondegradative preparation of amorphous cellulose", IPC Technical Paper Series 15, 1985.15pp).

[0059] Adsorption measurement method : First add 0.50 mg of microcrystalline or amorphous cellulose to a microcentrifuge test tube containing a pH buffer solution, mix until the cellulose is evenly dispersed, then add 1-15 μg of high-purity CBP protein to the test tube, and then add pH buffer To 100μl, put the test tube in a ...

Example Embodiment

[0061] Example 2. The effect of CBP on the degradation of cellulose by cellulase.

[0062] Material: CBP (Sigma Aldrich product number C8581) is a 17kDa fragment extracted from the cellulose mixture of Clostridium cellulovorans, and expressed by E. coli. Microcrystalline cellulose is SigmaAldrich S3504. The cellulase is Sigma Aldrich C2730 (Trichoderma reesei ATCC 26921). Method: First add 0.50 mg of microcrystalline cellulose and 0.5 mg of amorphous cellulose to a microcentrifuge test tube containing a pH buffer solution, and mix until the cellulose is evenly dispersed. For the condition test of CBP adsorption, 15 μg of CBP protein was added to the test tube, and then pH buffer was added to 100 μl, and the test tube was placed in a constant temperature water tank at 25° C., and mixed for 1 hour. Then add cellulase (3-200μg), mix for 0-200 minutes, and finally separate with a high-speed centrifuge at a centrifugal speed of 12,000g for 5 minutes. Take the supernatant layer and ...

Example Embodiment

[0067] Example 3: The fiber protection effect of CBP on bleached wood pulp treated with cellulase.

[0068] Preparation of test materials: Bleached North American hardwood kraft chemical pulp was obtained from a paper mill in North America. The concentration of the original pulp is 10%, and the whiteness is 90% ISO. Before use, the concentration of the prepared slurry is 1.0%, and the pH is adjusted to 6.0-6.5. CBP is a product of Sigma Aldrich (No. C8581), and cellulase is a product of Novozymes 342, which is a mixed enzyme such as endoglucanase, exoglucanase and hemicellulase.

[0069] CBP and biological enzyme reaction conditions: take 200 grams of the above-mentioned prepared slurry (1% concentration), put it into a mixing mixer, and use a thermostat controller to control the temperature of the slurry at 50°C. Control sample: do not add any agent, mix and stir for 10 hours; CBP treatment: add a certain amount (500 g / ton dry slurry) of CBP protein, then mix and stir for 10 ho...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a composition for changing and improving the property of a fiber surface. The composition consists of the following components: a protein component without catalytic activity and a protein component with catalytic activity, wherein the protein component without catalytic activity is fibronectin with higher affinity to the fiber surface; the protein component with catalytic activity is fiber modified enzyme which can change the property of the fiber surface; and the weight ratio of the fibronectin to proteins of the fiber modified enzyme is between 1:(0.1-1:10). The invention also provides a method for applying the composition to paper making. When the composition is used for treating paper pulp, the drainage capacity of the paper pulp is greatly enhanced, and the intensive property of paper is remarkably enhanced.

Description

technical field [0001] The present invention relates to bio-enzyme and the technology of using bio-enzyme to change fiber, in particular to a composition for changing and improving fiber surface properties and a papermaking method. Background technique [0002] Paper or board is manufactured from an aqueous slurry of primarily cellulosic wood fibers, and the papermaking process generally involves depositing the slurry onto a moving wire or fabric whereby a sheet is formed from the solid components by filtering off the water, and then It is the pressing section and the drying section, and finally produces paper products. [0003] However, in recent years, the paper industry is facing more and more serious shortage of raw materials, forcing the paper industry to use low-quality recycled waste paper and non-wood pulp as the main raw materials for production. These raw materials have disadvantages such as low strength and poor water drainage performance, which seriously affect ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): D21H17/25D06M15/15D06M16/00D06M101/06
Inventor 王祥槐
Owner RISINGSTAR BIOTECH GUANGZHOU
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap