Environmentally-friendly method for enhancing mechanical properties of high antibacterial nano dialysis paper for medical protection

An environmentally-friendly method for enhancing mechanical properties of a high antibacterial nano dialysis paper for medical protection, comprising following steps:

• a, preparing pulp components, wherein 40-60 parts of hardwood pulp, 10-20 parts of polyvinyl alcohol fiber, 30-50 parts of softwood pulp and 10-20 parts of cellulose fiber by mass are taken;
• b, putting the hardwood pulp, the polyvinyl alcohol fiber, the softwood pulp and the cellulose fiber into a beater for beating to make a pulp, and then adding modified chitosan accounting for 1-5% of a weight of the pulp into the pulp, and then defibering for 10-20 minutes at a rotating speed of 1500-2000 revolutions per minute in a defibrator;
• and
• c, carrying out papermaking with the pulp after defibering to form a dialysis paper finished product;
• wherein the modified chitosan is prepared by an N-acylation reaction between maleic anhydride and chitosan under homogeneous conditions:
• adding 5-10 parts of chitosan to a mixture of 20-40 parts of N,N dimethylformamide and 20-40 parts of anhydrous ethanol by mass at a room temperature, stirring the mixture to dissolve the chitosan, and then adding 5-10 parts of maleic anhydride to the mixture, and finally obtaining a colloidal product by filtering after stirring for 12-15 hours, and washing the colloidal product to obtain the modified chitosan.