Preparation method of modified carboxymethyl cellulose carrier with targeting effect
A technology of carboxymethyl cellulose and cellulose, applied in the field of polymer functional materials, can solve the problems of waste of resources, pollution of the environment, etc., and achieve the effects of no secondary pollution, high adsorption, and improved therapeutic effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0017] S1, cotton fiber is placed in the sodium hydroxide solution that mass concentration is 1%, bath ratio is 1:40, heats and boils 40min, adopts plate and frame filter press to press filter and then cotton fiber is placed in mass concentration and is 5% Sodium hydroxide solution, bath ratio 1:40, stand at 20-40°C for 60 minutes, take out, wash and dry to obtain alkaline cotton fiber;
[0018] S2, pulverize the alkaline cotton fiber obtained in step S1, add it to deionized water, the bath ratio is 1:20, adjust the pH value to 8, slowly add the etherification agent monochloroacetic acid (commercially available) dropwise while stirring, React at 40°C for 2 hours. After the reaction, adjust the pH value of the product to neutral with dilute hydrochloric acid, filter with suction and wash with absolute ethanol and deionized water accordingly, dry and grind to obtain carboxymethyl cotton fiber;
[0019] S3, magnetic inorganic particle iron is added in the No. 1 container that deh...
Embodiment 2
[0021] S1. Place the microcrystalline cellulose in a sodium hydroxide solution with a mass concentration of 3%, with a bath ratio of 1:80, heat and boil for 60 minutes, and then filter the cotton fiber with a mass concentration of 30 min using a plate and frame filter press. % sodium hydroxide solution, bath ratio 1:60, stand at 40°C for 60min, take out, wash and dry to obtain alkaline microcrystalline cellulose;
[0022] S2, pulverize the basic microcrystalline cellulose obtained in step S1, add it to absolute ethanol, the bath ratio is 1:50, adjust the pH value to 9, and slowly add the etherification agent monochloroacetic acid (marketed purchased), and reacted at 60°C for 4 hours. After the reaction, adjust the pH value of the product to neutral with dilute hydrochloric acid, filter with suction and wash with absolute ethanol and deionized water accordingly, dry and grind to obtain carboxymethyl Crystalline cellulose;
[0023] S3. Add ferric iron tetroxide, the magnetic in...
Embodiment 3
[0025] S1, the pulp is placed in a sodium hydroxide solution with a mass concentration of 5%, the bath ratio is 1:60, heated and boiled for 80min, and then the cotton fiber is placed in a 20% sodium hydroxide solution after being filtered by a plate and frame filter press. Sodium hydroxide solution, bath ratio 1:70, stand at 30°C for 120 minutes, take out, wash and dry to obtain alkaline pulp;
[0026] S2, crush the alkaline pulp obtained in step S1, add it to absolute ethanol, the bath ratio is 1:40, adjust the pH value to 7, and slowly add the etherification agent monochloroacetic acid (commercially available) dropwise while stirring , react at 60°C for 3 hours, after the reaction, adjust the pH value of the product to neutral with dilute hydrochloric acid, filter with suction and wash with absolute ethanol and deionized water accordingly, dry and grind to obtain carboxymethyl pulp;
[0027] S3. Add the magnetic inorganic particle nickel into the No. 1 container with acetone...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More