Preparation method for reactive chitosan derivant

A technology of chitosan derivatives and reactivity, which is applied in the field of preparation of natural biopolymer materials, can solve the problems of complex process, high cost, and low degree of product substitution, and achieve simple experimental equipment, easy reaction process, and wide application Effect
CN101367886AInactive Publication Date: 2009-02-18BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2009-02-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of reactive chitosan derivatives, comprising adding chitosan in the mixture solution of organic amine and chloralkane or organic amine and acetone with the volume ratio of 1 to 3:1, stirring and placing for 48 hours at room temperature, cooling and stirring for 2 hours in ice bath at 5 DEG C below zero, dripping the chloralkane solution of 40 to 60wt% of unsaturated acyl chloride in the mixture solution within 2 to 4 hours, continuing to react for 6 hours at room temperature, wherein, the dripped long chain acyl chloride is 2 to 4 times of the mole number of the chitosan, obtaining the reactive chitosan derivative containing a double bond. The method of the invention realizes the solution of the chitosan derivative in organic solvents. The chitosan derivative can react and polymerize under ultraviolet light. The preparation method of reactive chitosan derivatives has the advantages of strong reaction process controllability, simple equipment and easy reaction process operation. The industrialization of products can be realized.
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Description

technical field

[0001] The invention relates to a preparation method of reactive N, O-chitosan derivatives. The invention belongs to the field of preparation of natural biopolymer materials. Background technique

[0002] Chitin is the second largest natural biopolymer in storage after cellulose in nature. Chitosan is the product of deacetylation of chitin after chemical treatment. It is an environmentally friendly natural polymer. Chitosan has the advantages of non-toxic antibacterial and anti-inflammatory, good biocompatibility, and strong biodegradability. At the same time, chitosan has many excellent properties such as anticancer, hemostatic, and immune enhancement. Therefore, it has great application value in food, cosmetics, packaging materials, textile printing and dyeing, oil field treatment, agricultural applications, etc., especially in the field of biomedical materials, it can be used as burn dressings, postoperative adhesion materials, drug carriers, enzyme inhib...

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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