Unlock instant, AI-driven research and patent intelligence for your innovation.

A protein-modified biodegradable PVA slurry and preparation method thereof

A technology of biodegradation and protein, applied in the field of PVA slurry and its preparation, can solve the problems of unreachable modified PVA, achieve the effect of simple preparation method, improved biodegradability, desizing performance and degradability

Active Publication Date: 2017-12-08
浙江研一新材料技术有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen from the above prior art that by mixing or copolymerizing several polymers with better compatibility with PVA, the biodegradability of modified PVA can be improved, because the participation of other polymers destroys the hydrogen bonds between PVA molecules, Make PVA relatively easy to be degraded by microbial attack, but the degradability of modified PVA has not yet reached the level of biodegradability, and further improvement is needed to improve the strong vitality of PVA as a textile pulp

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
  • A protein-modified biodegradable PVA slurry and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Add partially alcoholyzed PVA into deionized water, stir at a constant temperature of 85° C. until the PVA is completely dissolved, and cool down to room temperature naturally to obtain a 15% PVA aqueous solution.

[0030] (2) Add sodium hydroxide and urea to deionized water respectively, stir evenly, and drop to -3° C. to obtain a sodium hydroxide / urea solution, wherein the concentration of sodium hydroxide is 5%, and the concentration of urea is 12%.

[0031] (3) Dissolve silk protein with a molecular weight of 12-35KDa in deionized water, add sodium hydroxide / urea solution, and stir at a constant temperature at 0°C until the silk protein is completely dissolved to obtain a protein solution with a protein content of 5%.

[0032] (4) According to the volume ratio, add 1 part of protein solution to 5 parts of PVA aqueous solution, stir until completely uniform, then add 0.5 part of boric acid initiator, stir slowly at 50rpm / min until completely cross-linked, and obta...

Embodiment 2

[0034] (1) Add partially alcoholysed PVA into deionized water, stir at a constant temperature of 90° C. until the PVA is completely dissolved, and cool down to room temperature naturally to obtain a 40% PVA aqueous solution.

[0035] (2) Add sodium hydroxide and urea to deionized water respectively, stir evenly, and drop to -10° C. to obtain a sodium hydroxide / urea solution, wherein the concentration of sodium hydroxide is 10%, and the concentration of urea is 15%.

[0036] (3) Dissolve silk protein with a molecular weight of 12-35KDa in deionized water, add sodium hydroxide / urea solution, and stir at a constant temperature at 0°C until the silk protein is completely dissolved to obtain a protein solution with a protein content of 15%.

[0037] (4) According to the volume ratio, add 1 part of protein solution to 10 parts of PVA aqueous solution, stir until completely uniform, then add 2 parts of boric acid initiator, and slowly stir at 100 rpm / min until completely cross-linked ...

Embodiment 3

[0039] (1) Add partially alcoholysed PVA into deionized water, stir at a constant temperature of 88° C. until the PVA is completely dissolved, and cool down to room temperature naturally to obtain a 25% PVA aqueous solution.

[0040] (2) Add sodium hydroxide and urea to deionized water respectively, stir evenly, and drop to -5° C. to obtain a sodium hydroxide / urea solution, wherein the concentration of sodium hydroxide is 8%, and the concentration of urea is 13%.

[0041] (3) Dissolve silk protein with a molecular weight of 12-35KDa in deionized water, add sodium hydroxide / urea solution, and stir at a constant temperature at 0°C until the silk protein is completely dissolved to obtain a protein solution with a protein content of 10%.

[0042] (4) According to the volume ratio, add 1 part of protein solution to 7 parts of PVA aqueous solution, stir until completely uniform, then add 1 part of citric acid initiator, stir slowly at 80rpm / min until completely cross-linked, and obta...

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

PropertyMeasurementUnit
molecular weightaaaaaaaaaa
Login to View More

Abstract

The invention provides protein-modified biodegradable PVA slurry and a preparation method thereof. The preparation method comprises the following steps: adding PVA into deionized water, stirring at constant temperature of 85 to 90 DEG C until the PVA is completely dissolved, naturally cooling to room temperature, so as to obtain a PVA aqueous solution; (2) respectively adding sodium hydroxide and urea into the deionized water, uniformly stirring, cooling to temperature lower than 0, so as to obtain a sodium hydroxide / urea solution; (3) dissolving fibroin into the deionized water, adding the solution into the sodium hydroxide / urea solution prepared in the step (2), stirring at constant temperature of 0 DEG C until the fibroin is completely dissolved, so as to obtain a protein solution; (4) adding the protein solution prepared in the step (3) into the PVA aqueous solution prepared in the step (1), stirring until the materials are uniform, then adding an initiator, slowly stirring until complete crosslinking is realized, finally adding azodicarbonamide and an oilfield auxiliary chemical, uniformly stirring, and performing defoaming to obtain the protein-modified biodegradable PVA slurry.

Description

Technical field: [0001] The invention belongs to the technical field of textile materials, and in particular relates to a protein-modified biodegradable PVA slurry and a preparation method thereof. Background technique: [0002] As the country has higher and higher requirements for energy saving, emission reduction and environmental protection, and has proposed to focus on promoting green, circular and low-carbon industrial structure and production methods, more and more textile enterprises have fully realized that green textiles are textiles. A new direction for sustainable industrial development. The textile sizing process needs to meet the requirements of low-carbon green, and it is necessary to actively try to develop new PVA sizing or other environmentally friendly sizing and its supporting sizing process. [0003] Traditional PVA sizing has excellent film-forming properties, but the fabric after sizing is difficult to remove PVA, which has a great impact on the qualit...

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
Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/333D06M15/15D06M13/402C08J3/24
CPCC08J3/246C08J2329/04C08J2489/00D06M13/402D06M15/15D06M15/333
Inventor 周继东
Owner 浙江研一新材料技术有限公司