Preparation method for blend membrane of sodium alginate, amylum and carboxymethyl cellulose

A technology of carboxymethyl cellulose and sodium carboxymethyl cellulose is applied in the field of biomedical material preparation and achieves the effects of wide source, low price and excellent biodegradability

Inactive Publication Date: 2014-04-16
青岛海之林生物科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to improve the shortcomings of single polymer sodium alginate and starch preparation materials, improve the physical and chemical properties and thermal stability of materials, the invention provides a preparation method of sodium alginate, starch, carboxymethyl cellulose blend film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Prepare 3% sodium alginate solution and 3% carboxymethyl cellulose sodium solution respectively, mix the two solutions with 5% starch solution in a certain proportion in a hot water bath at 45 °C, and depressurize After degassing, it was poured into a film-forming mold, and then the film was solidified in a 3% CaCl2 solution for 30 min, washed with water, and soaked in a 1% hydrochloric acid aqueous solution for 20 min to obtain a blended film. Remove the membrane, wash with distilled water, and dry. Dry films were stored in a desiccator.

[0019] The components in the film are by mass percentage: sodium alginate 33.3%, starch 44.4%, carboxymethyl cellulose 22.2%

[0020] The good mechanical properties of the ternary membrane have been tested. Compared with the single polymer, the mechanical properties, water absorption and water vapor transmission rate of the blended film are significantly improved.

[0021]

Embodiment 2

[0023] Prepare 3% sodium alginate solution and 3% carboxymethyl cellulose sodium solution respectively, mix the two solutions with 5% starch solution in a certain proportion in a hot water bath at 45°C, and depressurize After defoaming, it was poured into a film-forming mold, and then the film was solidified in a 3% CaCl2 solution for 60 minutes, washed with water, and soaked in a 1% hydrochloric acid aqueous solution for 40 minutes to obtain a blended film. Remove the membrane, wash it with distilled water, and dry it in the air; the dried membrane is stored in a desiccator.

[0024] The components in the film are by mass percentage: 45.5% sodium alginate, 18.1% starch, and 36.4% carboxymethyl cellulose. The good mechanical properties of the ternary membrane have been tested. Compared with the single polymer, the mechanical properties, water absorption and water vapor transmission rate of the blended film are significantly improved.

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Abstract

The invention discloses a preparation method for a blend membrane of sodium alginate, amylum and carboxymethyl cellulose, and belongs to the field of preparation of bio-pharmaceutical materials. The preparation method comprises the following steps: preparing a sodium alginate solution with a mass fraction of 3% and a sodium carboxymethyl cellulose solution with a mass fraction of 3% respectively; mixing the two solutions with a starch solution of which the mass fraction is 5% according to a certain proportion in a hot water bath; carrying out decompression and defoaming; pouring the mixture into a membrane forming mould; putting the obtained membrane in a CaCl2 solution of which the mass fraction is 3% to curdle for 30-60 minutes; carrying out water washing; soaking the membrane in a hydrochloric acid aqueous solution of which the mass fraction is 1% for 20-40 minutes to obtain the blend membrane; taking down the blend membrane; washing the blend membrane with distilled water; airing the blend membrane; reserving the dry blend membrane in a drier. The ternary film prepared according to the preparation method has relatively good mechanical property; compared with a membrane made of a sole polymer, the blend membrane is improved remarkably in mechanical property, water absorbability and water vapor permeability.

Description

Technical field [0001] The present invention is a field of preparation of biopharmaceutical materials, and it involves a method of preparing a co -film of sodium algina, starch, and carboxymethyl cellulose. [0002] Background technique [0003] Sodium algina is a natural polymer that exists in brown algae. Due to its good biodegradation and biocompatibility, it has been widely used in chemistry, biology, medicine, food and other fields;Membrane is prepared widely used in multiple uses of membrane materials; however, sodium alginal membrane is crispy, and the water resistance is extremely poor, and the application is limited. [0004] Starch is a renewable natural polymer substance connected by many glucose units through glycoside bonds. Due to its rich sources, cheap prices and biodegradableness, starch -based degradable plastic has always been a hot spot for people. HoweverThere are disadvantages such as mechanical properties, dampness, water resistance, and poor processing hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L3/02C08L5/04C08L1/28
Inventor 陈宏崔冰时慧刘晶营
Owner 青岛海之林生物科技开发有限公司
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