Preparation method of chitosan/cellulose homogeneous spinning solution

A technology of spinning stock solution and chitosan, which is applied in the direction of spinning solution preparation, cellulose/protein conjugated artificial filament, fiber chemical characteristics, etc., can solve the problems of difficult mixing evenly, easy generation of bubbles, long time, etc. Achieve the effects of simple process route, continuous processing and cost saving

Active Publication Date: 2013-02-20
CHINESE TEXTILE ACAD
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the blending process is easy to generate bubbles, and the blending solution is difficult to mix evenly due to the difference in viscosity of the cellulose and chitosan solutions.
Patent application 200710043563.9 a

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Add 3g of chitosan (with an average viscosity of 1.1 million) to 315g of 1-ethyl-3-methylimidazole acetate ([EMIM]Ac) ionic liquid, mix well, seal well, and swell at room temperature 4 hours;

[0035] 2. Add 32 g of bamboo pulp cellulose (polymerization degree of 500), knead and mix uniformly, add to the dissolving kettle, seal it, vacuum to 0.1-0.5 atmospheres, and further mix and swell for 12 hours;

[0036] 3. Turn on the stirring, the stirring speed is 30 rpm, set the heating rate to 5°C / 5min, rise from room temperature to 95°C, after reaching the set value, stop heating, and perform constant temperature dissolution and heat preservation at this temperature After dissolving for 6 hours, a sample was observed under a polarizing microscope to obtain a uniform black field of view to obtain a homogeneous cellulose / chitosan ionic liquid spinning dope.

Embodiment 2

[0038] 1. Add 3.5g of chitosan (viscosity average mass fraction of 390,000) to 315g of 1-butyl-3-methylimidazole acetate ([BMIM]Ac) ionic liquid, mix well, seal well, and at room temperature Swelling for 4 hours;

[0039] 2. Add 31.5g of hemp pulp cellulose (polymerization degree 600), knead and mix uniformly, add it to the dissolving kettle, seal it well, vacuum to 0.1-0.5 atmospheres, and further mix and swell for 12 hours;

[0040] 3. Turn on the stirring, the stirring speed is 90 rpm, set the heating rate to 5°C / 5min, rise from room temperature to 90°C, after reaching the set value, stop heating, perform constant temperature dissolution at this temperature and keep warm After 4 hours of dissolution, a sample was taken and observed under a polarizing microscope to obtain a uniform black field of view to obtain a homogeneous cellulose / chitosan ionic liquid spinning dope. Example 3

Embodiment 3

[0041] 1. Add 3g of chitosan (with an average viscosity of 150,000) into 315g of 1-allyl-3-methylimidazole chloride ([AMIM]Cl) ionic liquid, mix well, seal well, and swell at room temperature 4 hours;

[0042] 2. Add 32 g of bagasse pulp cellulose (polymerization degree 500), knead and mix uniformly, add it to the dissolving kettle, seal it well, vacuum to 0.1-0.5 atmospheres, and further mix and swell for 12 hours;

[0043] 3. Turn on the stirring, the stirring speed is 120 revolutions / min, set the heating rate 5℃ / 5min, increase from room temperature to 95℃, after reaching the set value, stop heating, perform constant temperature dissolution at this temperature, and dissolve 4 After hours, a sample was taken and observed under a polarizing microscope to obtain a uniform black field of view to obtain a homogeneous cellulose / chitosan ionic liquid spinning stock solution.

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 relates to a preparation method of a spinning solution. Specifically, the invention relates to a preparation method of a chitosan/cellulose homogeneous spinning solution. The preparation method comprises the steps that: chitosan is swelled in an ionic liquid; cellulose is added, and the mixture is well mixed by stirring; swelling is carried out again; and stirring and dissolving are carried out under a vacuum heating condition, such that the chitosan/cellulose homogeneous spinning solution is obtained. The processing method provided by the invention is simple, fast, and highly efficient. A processing process is continuous, and is beneficial for industrial large-scale productions. A simultaneous dissolving method is adopted during the processing process, such that a defect of uniform mixing difficulty caused by gas bubbles produced by separate solution mixing is avoided, such that production cost is saved.

Description

Technical field [0001] The invention relates to a preparation method of spinning dope, in particular to a preparation method of chitosan / cellulose homogeneous spinning dope. Background technique [0002] With the increase in oil prices and the one-time resource depletion problem in the near future, the chemical fiber industry based on petroleum is facing huge challenges. Therefore, bio-sourced fibers with excellent performance and consistent with sustainable development strategies are leading the development of the future direction. Cellulose is the largest natural polymer in nature and can be regenerated quickly, with an annual regeneration volume of more than 1.0×10 10 Ton. Chitin is a natural polymer whose reserves are second only to cellulose in nature, with an annual biosynthesis of nearly 10 billion tons. Chitosan is the deacetylation product of chitin, and it is the most abundant alkaline biopolysaccharide in nature. Cellulose fiber has the characteristics of hydrophili...

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): D01F8/18D01F8/02D01D1/02
Inventor 段先泉徐纪刚李晓俊朱庆松孙玉山必新义
Owner CHINESE TEXTILE ACAD
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