Highly-antibacterial novel slightly-soluble nonwoven cloth capable of adsorbing heavy metal particles

Abstract

The invention discloses highly-antibacterial novel slightly-soluble nonwoven cloth capable of adsorbing heavy metal particles.The nonwoven cloth is prepared from carboxymethyl chitosan fibers, chitosan fibers and low-melting-point ES fibers, the ES fibers are of a structure with an inner core which is PP fibers, outer skin is PE fibers, content of the carboxymethyl chitosan fibers is 1-10%, degree of substitution at O positions is 0.7, degree of substitution at N positions is 0.5, content of the chitosan fibers is 5-10%, content of the ES fibers is 70-94%, and the nonwoven cloth is prepared by bonding the carboxymethyl chitosan fibers, the chitosan fibers and the ES fibers through hot air.The nonwoven cloth is soft, breathable, high in strength, less prone to breakage and remarkably higher in moisture absorbing and maintaining performance.The carboxymethyl chitosan fibers and the chitosan fibers can be dissolved at different degrees when temperature is 25-40 DEG C and PH is 5.0-8.0 to be in a slightly-soluble state, so that particles can be blocked and filtered effectively and the nonwoven cloth has higher antibacterial performance and higher performance in adsorbing the heavy metal particles.

Description

technical field [0001] The invention belongs to the technical field of non-woven fabrics, and in particular relates to a novel slightly soluble non-woven fabric with high antibacterial properties and adsorption of tiny particles of heavy metals. Background technique [0002] Non-woven fabric is a kind of fabric formed without spinning and weaving. It is just oriented or randomly arranged textile short fibers or filaments to form a web structure, and then reinforced by mechanical, thermal bonding or chemical methods. A new type of fiber product with soft, breathable and planar structure. The advantage is that it does not produce lint, is breathable and waterproof, environmentally friendly, flexible, non-toxic, tasteless, durable, and silky soft. It is also a kind of reinforcing material, and it also has the feeling of cotton . The non-woven fabrics used in sanitary products were originally produced by polypropylene, polyester, etc. During production, the temperature requirem...

AI Technical Summary

Problems solved by technology

The non-woven fabrics used in sanitary products were originally produced by polypropylene, polyester, etc. During production, the temperature requirements were relatively strict, the operation was difficult, and the overall hardness was relatively large. Later, ES fibers were used to produce non-woven fabrics, which have bulkiness, softness, High-strength, oil-absorbing, water-absorbing, etc., can be used for disposable sanitary products such as masks, diapers, sanitary napkins, etc., but has limited functions, does not have antibacterial properties, and cannot absorb toxic and harmful substances

[0003] Chitosan, also known as water-soluble chitin, is a polysaccharide natural polymer. It is a product prepared by deacetylation of chitin. It has good biocompatibility, antibacterial, biodegradability and The ability to absorb heavy metal ions, using chitosan to spin chitosan fibers, has significant antibacterial and anti-mildew effects, and can be widely used in sanitary textiles and clothing, such as sanitary napkins, baby clothes, gauze for burns and wound treatment, etc. However, due to the strong hydrogen bonding between chitosan molecules, the ordered structure between molecules makes the chitosan crystal structure dense and stable, so it is only soluble in acidic aqueous solution, which limits the wide application of chitosan