A kind of preparation method of poly-γ-glutamic acid/chitosan/nano-copper antibacterial composite fiber
A composite fiber, glutamic acid technology, applied in conductive/antistatic filament manufacturing, fiber chemical characteristics, conjugated synthetic polymer rayon, etc., can solve problems such as poisoning, inorganic copper environmental pollution, and copper application limitations. , to achieve the effect of convenient use, strong antibacterial durability, and ensure natural style
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0033] (1) Add the poly-γ-glutamic acid solution dropwise to the chitosan spinning solution, and use the electrostatic interaction between the carboxyl group of poly-γ-glutamic acid (γ-PGA) and the amino group of chitosan (CS) The nanoparticles were prepared according to the ratio of the amount of the carboxyl group to the amino group. The mass fraction of chitosan in the chitosan spinning solution is 3%, and the solvent is an acetic acid solution; the weight-average molecular weight of the chitosan is 8×10 5 g / mol, the degree of deacetylation is greater than 90%. Under stirring at room temperature (600 r / min), 10 mL and 2 g / L of γ-PGA were added dropwise to CS acetate buffer (50 mL, pH=6) at a rate of 6 mL / h using a micro syringe pump. medium, 598W ultrasonic for 10min, continued stirring for 12h, dialyzed for 3h to remove unbound small polymer;
[0034] (2) Using copper chloride as copper source, hydrazine hydrate as reducing agent, cetyltrimethylammonium bromide (CTAB) a...
Embodiment 2
[0038] (1) Add the poly-γ-glutamic acid solution dropwise to the chitosan spinning solution, and use the electrostatic interaction between the carboxyl group of poly-γ-glutamic acid (γ-PGA) and the amino group of chitosan (CS) The nanoparticles were prepared according to the ratio of the amount of the carboxyl group to the amino group. The mass fraction of chitosan in the chitosan spinning solution is 4%, and the solvent is an acetic acid solution; the weight-average molecular weight of the chitosan is 10×10 5 g / mol, the degree of deacetylation is greater than 90%. Under stirring at room temperature (600 r / min), 10 mL and 2 g / L of γ-PGA were added dropwise to CS acetate buffer (50 mL, pH=5) at a rate of 6 mL / h using a micro syringe pump. medium, sonicated at 598W for 10 min, continued to stir for 12 h, and dialyzed for 3 h to remove unbound small-molecule polymers.
[0039] (2) Using copper chloride as copper source, hydrazine hydrate as reducing agent, cetyltrimethylammonium...
Embodiment 3
[0043] (1) Add the poly-γ-glutamic acid solution dropwise to the chitosan spinning solution, and use the electrostatic interaction between the carboxyl group of poly-γ-glutamic acid (γ-PGA) and the amino group of chitosan (CS) The nanoparticles were prepared according to the ratio of the amount of the carboxyl group to the amino group. The mass fraction of chitosan in the chitosan spinning solution is 5%, and the solvent is an acetic acid solution; the weight-average molecular weight of the chitosan is 12×10 5 g / mol, the degree of deacetylation is greater than 90%. Under stirring at room temperature (600 r / min), 10 mL and 2 g / L of γ-PGA were added dropwise to CS acetate buffer (50 mL, pH=3) at a rate of 6 mL / h using a micro syringe pump. medium, 598W ultrasonic for 10min, continued stirring for 12h, dialyzed for 3h to remove unbound small polymer;
[0044] (2) Using copper chloride as copper source, hydrazine hydrate as reducing agent, cetyltrimethylammonium bromide (CTAB) ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More