Method for incorporating ultraviolet radiation protection and antimicrobial protection into rayon

A method for incorporating ultraviolet radiation protection and antimicrobial protection into rayon, the method comprising the steps of:

• providing pulp to form cellulose sheets;
• steeping the cellulose sheets;
• pressing the cellulose sheets;
• shredding the cellulose sheets into white crumb;
• aging the white crumb to form yellow crumb;
• xanthation of the yellow crumb;
• dissolving the yellow crumb to form a viscose;
• homogenizing the viscose, the viscose having a weight;
• adding an amount of an additive to the viscose, the additive comprising a quantity of zinc oxide particles and a quantity of a phosphoether of 4-hydroxybenzophenone with the amount of the additive added being about 1% to 2% based on the weight of the viscose;
• ripening the viscose;
• filtering the viscose;
• degassing the viscose;
• spinning the viscose to form a filament of rayon;
• drawing the rayon;
• washing the rayon;
• and
• cutting the rayon.

A method for incorporating ultraviolet radiation protection and antimicrobial protection into rayon, the method comprising the steps of:

• providing pulp to form cellulose sheets;
• steeping the cellulose sheets;
• pressing the cellulose sheets;
• shredding the cellulose sheets into white crumb;
• aging the white crumb to form yellow crumb;
• xanthation of the yellow crumb;
• dissolving the yellow crumb to form a viscose, the viscose having a weight;
• preparing an additive, which comprises a quantity of prepared zinc oxide particles modified with a layer of a reactive group with the quantity of prepared zinc oxide particles modified with a layer of a reactive group that forms a bond with the quantity of rayon with the quantity of prepared zinc oxide particles, by suspending a quantity of zinc oxide particles in a solution of 98% ethyl alcohol, suspending a quantity of benzophenone silane linker in the solution of zinc oxide particles and 98% ethyl alcohol, adjusting the pH of the solution of zinc oxide particles, 98% ethyl alcohol, and benzophenone silane linker to a pH of 12, placing the pH adjusted solution of zinc oxide particles, 98% ethyl alcohol, and benzophenone silane linker into a centrifuge, recovering the zinc oxide particles prepared by centrifugation after a period of time, and drying the recovered prepared zinc oxide particles for a period of time, wherein the quantity of zinc oxide particles are coated with titanium,
• adding an amount of an additive to the viscose, with the amount of the additive added being about 1% to 2% based on the weight of the viscose;
• homogenizing the viscose;
• ripening the viscose;
• filtering the viscose;
• degassing the viscose;
• spinning the viscose to form a filament of rayon;
• drawing the rayon;
• washing the rayon;
• and
• cutting the rayon.