High-intensity high-hydroscopicity medical dressing containing carboxymethyl cellulose and preparation method thereof

A technology of carboxymethyl cellulose and high water absorption, which is applied in the field of medicine, can solve the problems of complex preparation process, poor mechanical properties, and low water absorption, and achieve the effect of simple preparation process, low cost, and improved chemical adsorption performance

Inactive Publication Date: 2013-04-17
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a low-cost dressing with good water absorption and mechanical properties, aiming at the shortcomings of the existing carboxymethylcellulose medical dressings, which have poor mechanical properties, low water absorption, high price and complicated preparation process. , Carboxymethylcellulose-containing medical dressing with simple preparation process and preparation method thereof

Method used

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  • High-intensity high-hydroscopicity medical dressing containing carboxymethyl cellulose and preparation method thereof

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preparation example Construction

[0033] c Preparation of carboxymethylcellulose-containing dressings

[0034] The modified cellulose non-woven fabric 1 obtained in step b and the non-woven fabric 2 are combined to form a whole by acupuncture, that is, a medical dressing containing carboxymethyl cellulose with high strength and high water absorption is produced.

[0035] The cellulose nonwoven fabric is a natural cellulose nonwoven fabric or a regenerated cellulose nonwoven fabric.

[0036] The nonwoven fabric is a natural fiber nonwoven fabric, a regenerated fiber nonwoven fabric, a synthetic fiber nonwoven fabric or a blended nonwoven fabric.

[0037] Aiming at the shortcomings of the high degree of substitution carboxymethyl cellulose fabric's mechanical properties are severely reduced, and the structural integrity of the original fabric cannot be maintained after absorbing liquid, the modified cellulose nonwoven fabric is combined with the nonwoven fabric by acupuncture. constitute a whole. On the one ha...

Embodiment 1

[0040] Embodiment 1: the preparation of the present invention's high-strength, highly water-absorbing medical dressing containing carboxymethyl cellulose

[0041] a Alkaline treatment of viscose nonwovens

[0042] First, a sodium hydroxide solution with a concentration of 1 wt% was prepared, and the viscose nonwoven fabric was immersed in the sodium hydroxide solution, and reacted at a temperature of 0° C. for 0.5 h at a bath ratio of 10:1;

[0043] b Etherification treatment of viscose nonwovens

[0044] Prepare a mixed solution of sodium hydroxide and chloroacetic acid, wherein the concentration of sodium hydroxide solution is 1wt%, and the molar ratio of chloroacetic acid to the cellulose hydroxyl group in the viscose nonwoven fabric is 0.5: 1, after the alkalization treatment obtained in step a The viscose nonwoven fabric is immersed in the mixed solution, and reacted at 0°C for 0.5h with a bath ratio of 10:1. After the reaction is completed, add 5wt% acetic acid solution...

Embodiment 2

[0047] Embodiment 2: the preparation of high-strength, high-absorbency medical dressing containing carboxymethyl cellulose of the present invention

[0048] a Alkaline treatment of viscose nonwovens

[0049] First, prepare a sodium hydroxide solution with a concentration of 20 wt%, immerse the viscose nonwoven fabric in the sodium hydroxide solution, and react at a temperature of 100° C. for 5 hours at a bath ratio of 50:1;

[0050] b Etherification treatment of viscose nonwovens

[0051] Prepare a mixed solution of sodium hydroxide and chloroacetic acid, wherein the concentration of sodium hydroxide solution is 20wt%, and the molar ratio of chloroacetic acid to the cellulose hydroxyl group in the viscose nonwoven fabric is 10: 1, after the alkalization treatment obtained in step a The viscose non-woven fabric was immersed in the mixed solution, and reacted at 100°C for 10 hours with a bath ratio of 50:1. After the reaction was completed, 30wt% acetic acid solution was added ...

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Abstract

The invention provides high-intensity high-hydroscopicity medical dressing containing carboxymethyl cellulose and a preparation method thereof. The method comprises the following specific steps: preparing carboxymethyl cellulose non-woven fabric through two steps of alkali added aqueous medium process; combining the obtained carboxymethyl cellulose non-woven fabric with a non-woven fabric to form a unit through needling, so as to prepare the high-intensity high-water absorbability medical dressing containing carboxymethyl cellulose. The dressing has the advantages that the substituted ratio of the prepared carboxymethyl cellulose non-woven fabric is controlled among 0.1-.05, and the substitution is uniform; the space physical adsorption property of the carboxymethyl cellulose non-woven fabric is kept, and meanwhile, the chemical adsorption performance is improved; the obtained carboxymethyl cellulose non-woven fabric and the non-woven fabric are compounded to a unit, which improves the dryness strength of the dressing prepared by the invention, beautifies the appearance, and improves the hand feeling. Besides, the method is simple and convenient in preparation technology and lower in cost.

Description

technical field [0001] The invention relates to a high-strength, highly water-absorbing medical dressing containing carboxymethyl cellulose and a preparation method thereof, belonging to the technical field of medicine. Background technique [0002] Cellulose is the most abundant natural polymer material in nature, with a wide range of sources, low price, good biocompatibility and degradability. Carboxymethyl modification of cellulose, according to the degree of substitution, can be prepared into various types of absorbent materials such as hydrogels, sponges, films, hydrated fibers or fabrics. Among them, the carboxymethyl cellulose hydration fiber or fabric is to carry out low substitution etherification treatment on the cellulose textile, so that the skin layer of the fiber forms a network structure of hydrophilic carboxymethyl groups, while the core layer of the fiber remains The original natural structure can make it a moist medical dressing that not only maintains the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L15/28D06M11/38D06M13/21D06M13/188
Inventor 赵瑾朝朱平张传杰刘云冉建华张楠楠席先鑫
Owner WUHAN TEXTILE UNIV
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