Alginate knitted or woven gauze and preparation method thereof

A technology of alginate and knitting, which is applied in the direction of spinning solution preparation, alginate artificial filament, knitting, etc., to achieve the effect of promoting skin regeneration, high oxygen permeability, and good strength

Inactive Publication Date: 2013-01-16
WUHAN BIOMTEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, it has not been reported that sodium alginate and PVA are blended and then crosslinked to further improve the m

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of preparation method of alginate knitted or spun gauze, it comprises the following steps:

[0035] 1) Prepare a sodium alginate solution with a mass percentage of 2.5% and a polyvinyl alcohol (PVA) solution with a mass percentage of 8%, according to the solutes of the sodium alginate solution and polyvinyl alcohol solution (that is, sodium alginate and polyvinyl alcohol) The mass ratio of the sodium alginate solution and the polyvinyl alcohol solution are mixed, stirred evenly, vacuum defoamed for 24 hours, and the spinning stock solution is obtained, which is set aside;

[0036] The number average molecular weight of the sodium alginate is 200,000. The number average molecular weight of the polyvinyl alcohol is 80,000.

[0037] 2) Control the spinning stock solution to spin at 40 oС, and process the spinning stock solution obtained in step 1) through wet or dry-wet spinning to obtain alginate composite fibers (that is, fiber filaments, with a coagulation solut...

Embodiment 2

[0043] A kind of preparation method of alginate knitted or spun gauze, it comprises the following steps:

[0044] 1) Prepare a sodium alginate (SA) solution with a mass percentage of 2% and a polyvinyl alcohol (PVA) solution with a mass percentage of 10%. Vinyl alcohol) with a mass ratio of 4:1, mix the sodium alginate solution and the polyvinyl alcohol solution, stir evenly, and vacuum defoam for 24 hours to obtain the spinning stock solution for later use;

[0045] The number average molecular weight of the sodium alginate is 200,000. The number average molecular weight of the polyvinyl alcohol is 80,000.

[0046] 2) Control the spinning stock solution to spin at 40 oС, and process the spinning stock solution obtained in step 1) through wet or dry-wet spinning to obtain alginate composite fibers (that is, fiber filaments with a coagulation solution of 1wt%) calcium chloride aqueous solution);

[0047] 3) The alginate composite fiber obtained in step 2) is prepared, cleane...

Embodiment 3

[0052] A kind of preparation method of alginate knitted or spun gauze, it comprises the following steps:

[0053] 1) Prepare 2.5% sodium alginate (SA) solution and 8% polyvinyl alcohol (PVA) solution by mass percentage, according to the solutes of sodium alginate solution and polyvinyl alcohol solution (that is, sodium alginate and polyethylene Alcohol) in a mass ratio of 3:1, mix sodium alginate solution and polyvinyl alcohol solution, add oxidized sodium alginate crosslinking agent after mixing, its mass is 0.5% of the mass of sodium alginate, stir evenly, vacuum remove Soak for 24 hours to obtain the spinning stock solution for subsequent use;

[0054] The number average molecular weight of the sodium alginate is 200,000. The number average molecular weight of the polyvinyl alcohol is 80,000.

[0055] 2) Control the spinning stock solution to spin at 40 oС, and process the spinning stock solution obtained in step 1) through wet or dry-wet spinning to obtain alginate compo...

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Abstract

The invention belongs to the technical field of medical biological high-polymer materials and textile science, relates to a preparation method of medical gauze and provides alginate knitted or woven gauze. The alginate knitted or woven gauze is characterized by being formed by blending or crosslinking alginate with polyving akohol, spinning to obtain fiber filaments by the wet process and the dry process, then spinning to manufacture yarns and knitting the yarns by a knitting machine or a loom. The alginate knitted or woven gauze has excellent strength.

Description

technical field [0001] The invention belongs to the field of medical biopolymer materials and textile science and technology, and relates to a preparation method of medical gauze, in particular to an alginate knitted or spun gauze and a preparation method thereof. Background technique [0002] Medical gauze is generally made of pure cotton yarn woven into plain weave, which is degreased and bleached. It has strong water absorption, whiteness and softness. Suitable for use in wound dressings to help control bleeding, prevent infection and absorb secretions. With the increasing awareness and demand for high-end medical dressings and functional dressings in my country's medical field, high-end dressings will become the driving force for the development of the dressing market. [0003] Alginic acid widely exists in brown seaweed, and it is a high molecular carboxylic acid from the chemical structure, which consists of β-D-mannuronic acid (referred to as M unit) and α-L-guluroni...

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
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Application Information

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IPC IPC(8): D04B1/16D04B21/00D03D15/00D02G3/02D01F8/18D01F8/10D01D1/02D03D15/283D03D15/50
CPCD01D1/02D10B2509/02D01F9/04D04B21/00D02G3/02D03D9/00D04B1/16D02G3/045D03D15/00D10B2321/06
Inventor 张平刘夏李世普黄福龙
Owner WUHAN BIOMTEK
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