Water-soluble chitosan quaternary ammonium salt antibiotic finishing agent and preparation and application thereof

Abstract

The invention relates to a water-soluble chitosan quaternary ammonium salt antibiotic finishing agent. The invention is characterized in that the antibiotic finishing agent is names as O-methacrylamide-N-hydroxypropyl alkyl dimethyl ammonium chloride chitosan and the concrete structural formula is as follows. The preparation thereof includes that: alkyl dimethyl tertiary amide and epichlorohydrin are taken as raw materials to synthesize 2, 3-epoxy alkyl dimethyl ammonium chloride, then the 2, 3-epoxy alkyl dimethyl ammonium chloride is introduce onto the ammonium group of chitosan, so as to obtain N-hydroxypropyl alkyl dimethyl ammonium chloride chitosan HDCC, and then crosslinking is carried out on the HDCC and hydroxymethyl acrylamide is carried out, thus obtaining NMA-HDCC. The quaternary ammonium salt antibiotic finishing agent contains water-soluble group and fibrous reactivity group and has good water solubility, the bacterial inhibition rate of finished cotton fabrics is close to 100%, and the finishing agent can be combined with cellulose fiber by covalent bond and is wash-resistant; and cost is low, raw material is environmental friendly, environmental pollution is less, thus having industrialization application prospect.

Description

technical field The invention belongs to the field of chitosan quaternary ammonium salt antibacterial finishing agent and its preparation and application, in particular to a water-soluble chitosan quaternary ammonium salt antibacterial finishing agent and its preparation and application. Background technique Chitosan is the deacetylation product of chitin, which is the second largest natural polysaccharide on the earth except fiber. As a green and environmentally friendly new material, it is rich in resources, non-toxic, non-polluting, and has many natural excellent properties, such as moisture absorption, reactivity, biocompatibility, biodegradability, adsorption, adhesion, Antibacterial and safety, etc., so its development and application prospects are broad. It has high application value in food, medicine, daily chemical industry, environmental protection, agriculture, textile, printing and dyeing, papermaking, instrument and so on. The broad-spectrum antibacterial pro...

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Problems solved by technology

The antibacterial properties of chitosan quaternary ammonium salts have been widely recognized, but when chitosan is applied to fabrics, it cannot form strong bonds with fibers, resulting in poor washing fastness, which limits its application in textile antibacterial finishing. application

So far, there has been no relevant report on the research on the water-soluble chitosan quaternary ammonium salt antibacterial finishing agent for fibers

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