Biodegradable super-absorbent non-woven fabric

A biodegradable and superabsorbent technology, applied in wet spinning, non-woven fabrics, spinning solution preparation, etc., can solve problems such as allergies, application, white pollution, etc.

Inactive Publication Date: 2015-04-22
FUJIAN HENGAN HLDG CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the core body of sanitary products (such as diapers, sanitary napkins, adult nursing pads, etc.) usually adopts granular acrylic superabsorbent polymer (Super Absorbent Polymer, referred to as SAP, the same below) as the absorber, and granular SAP often appears during use. Problems such as uneven distribution, easy flow and product core breakage, although acrylic super absorbent fiber (Super Absorbent Fiber, referred to as SAF, the same below) can solve some of the above problems, but it is derived from petroleum and is not renewable, and SAP and SAF often has acrylic acid monomer residues. When used in sanitary products, the monomers are leached out with the liquid and contact with the skin, which is prone to allergies
Although conventional s...

Method used

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  • Biodegradable super-absorbent non-woven fabric

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Example 1: First prepare 3-chloro-2-hydroxypropyltrimethylammonium chloride, and prepare it into a solution with a mass fraction of 50% for later use; dissolve sodium alginate (molecular weight: 300,000) in the mass fraction In a 5% sodium hydroxide aqueous solution, a sodium alginate solution with a mass fraction of 4% is prepared; a calcium chloride coagulation solution with a mass fraction of 3% is prepared; then the sodium alginate solution is transferred into a reaction kettle, and stirred Heating, stirring at 220 r / min, heating to 60°C, slowly adding 3-chloro-2-hydroxypropyltrimethylammonium chloride solution into the reaction kettle, so that the sugar units on the sodium alginate chain in the solution and the 3 The molar ratio of -chloro-2-hydroxypropyltrimethylammonium chloride is 10:1, and the reaction is completed after stirring for 4 hours at 60°C; the reaction solution is cooled down, degassed under reduced pressure, and the spinning stock solution is obtaine...

Embodiment 2

[0023] Example 2: First prepare 3-chloro-2-hydroxypropyltrimethylammonium chloride, and prepare it into a solution with a mass fraction of 50% for later use; dissolve sodium alginate (molecular weight: 400,000) in a mass fraction of In a 5% sodium hydroxide aqueous solution, a sodium alginate solution with a mass fraction of 5% is prepared; a 5% calcium chloride coagulation liquid is prepared; then the sodium alginate solution is transferred to a reaction kettle, stirred and heated, The stirring rate is 300r / min, heated to 70°C, and slowly adding 3-chloro-2-hydroxypropyltrimethylammonium chloride solution into the reaction kettle, so that the sugar units on the sodium alginate chain in the solution and the 3-chloro- The molar ratio of 2-hydroxypropyltrimethylammonium chloride is 3:1, and the reaction is completed after stirring at 80°C for 12 hours; the reaction solution is cooled down, degassed under reduced pressure, and the spinning stock solution is obtained, and the spinni...

Embodiment 3

[0024] Example 3: First prepare 3-chloro-2-hydroxypropyltrimethylammonium chloride, and prepare it into a solution with a mass fraction of 50% for later use; dissolve sodium alginate (molecular weight: 500,000) in a mass fraction of In a 5% sodium hydroxide aqueous solution, make a sodium alginate solution with a mass fraction of 5%; prepare a 5% calcium chloride coagulation solution; then transfer the sodium alginate solution into a reaction kettle, stir and heat , stirring at a rate of 350r / min, heated to 85°C, and slowly adding 3-chloro-2-hydroxypropyltrimethylammonium chloride solution into the reactor, so that the sugar units on the sodium alginate chain and 3-chloro The molar ratio of -2-hydroxypropyltrimethylammonium chloride is 2:1, and the reaction is completed after stirring for 12 hours at 85°C; % calcium chloride coagulation solution, coagulated at 40°C for 30s to obtain new multifunctional superabsorbent seaweed fibers, and then after stretching, washing, winding,...

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Abstract

The invention discloses biodegradable super-absorbent non-woven fabric. The non-woven fabric comprises, by weight, 30% to 50% of multifunctional super-absorbent alginate fibers and 50% to 70% of polylactic acid fibers in a compounded mode, and heat bonding net fixing is achieved. The non-woven fabric has the good water absorbing property, the good water retaining property, the good antibacterial property and the good biodegradability, and is mainly used for disposable hygienic products. The invention further discloses a method for preparing the multifunctional super-absorbent alginate fibers.

Description

technical field [0001] The invention relates to a biodegradable superabsorbent nonwoven fabric. The non-woven fabric is compounded by multifunctional superabsorbent seaweed fiber and polylactic acid fiber, thermally bonded and fixed, and is mainly used for disposable sanitary products. Background technique [0002] Seaweed fibers are widely used in pharmaceutical preparations, tissue engineering, clinical treatment, cell culture, food processing, and cosmetic industries due to their unique physical and chemical properties, good biocompatibility, and biodegradability. Sodium alginate is the main raw material for the preparation of alginate fiber. Alginic acid is a linear polysaccharide composed of uronic acid monomers, which contains two different structural units, namely β-D-mannuronic acid (abbreviated as M unit) and α-L-guluronic acid (abbreviated as Unit G). Sodium alginate is a white or light yellow powder that is easily soluble in water but insoluble in organic solve...

Claims

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Application Information

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IPC IPC(8): D01F9/04D01D5/06D01D1/02C08B37/04D04H1/4266D04H1/435
Inventor 张富山祝二斌苏文庭翁文伟向天夏
Owner FUJIAN HENGAN HLDG CO LTD
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