Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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 reduced, and the fiber loss rate is increased at the same time. increase production cost
At present, there is no technology that uses enzyme treatment to improve the water drainage performance of pulp, reduce the energy consumption of beating and improve the mechanical strength of paper

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

Embodiment 1

[0057] Example 1: Selective adsorption of CBP on cellulose surface.

[0058] Material : Microcrystalline cellulose and cellulose-binding protein (CBP) were purchased from SigmaAldrich. Among them, CBP (SigmaAldrich product number C8581) is a fragment with a molecular weight of 17 kDa extracted from the cellulose mixture of Clostridium cellulovorans, expressed by Escherichia coli (E. Coli). Microcrystalline cellulose is Sigma Aldrich S3504. Amorphous cellulose is prepared from microcrystalline cellulose 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 0.50mg of microcrystalline or amorphous cellulose into a microcentrifuge test tube containing pH buffer solution, mix until the cellulose is evenly dispersed, then add 1-15 μg of high-purity CBP protein into the test tube, and then add p...

Embodiment 2

[0061] Example 2. Effect of CBP on cellulase degradation of cellulose.

[0062] Materials: CBP (SigmaAldrich Product No. C8581) is a fragment with a molecular weight of 17 kDa extracted from the cellulose mixture of Clostridium cellulovorans, expressed by E. coli (E. Coli). Microcrystalline cellulose was SigmaAldrich S3504. The cellulase was SigmaAldrich C2730 (Trichoderma reesei ATCC 26921). Method: first add 0.50 mg of microcrystalline cellulose and 0.5 mg of amorphous cellulose into a microcentrifuge test tube containing a pH buffer solution, and mix until the cellulose is evenly dispersed. For the conditional test of CBP adsorption, 15 μg of CBP protein was added to the test tube, and then the 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 again for 0-200 minutes, and finally use a high-speed centrifuge to separate at a centrifugal speed of 12,000g for 5 mi...

Embodiment 3

[0067] Example 3: Fiber protection of CBP in the treatment of bleached wood pulp with cellulase enzymes.

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

[0069] CBP and biological enzyme reaction conditions: get 200 grams of the prepared slurry (1% concentration) above, put it into a mixing agitator, and control the temperature of the slurry at 50° C. with a thermostatic controller. Control sample: do not add any medicament, mix and stir for 10 hours; CBP process: add a certain amount (500 g / ton dry slurry) CBP protein, mix and stir for 10 hours the...

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 Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com