Functionally Modified Zeolite Powders for Delivering Antibacterial Performance to Cellulosic Paper

Abstract

Zeolite powders were first treated with hydrochloric acid, then reacted with sodium chloride, and sodium zeolite (Na-Zeolite) powders were obtained. Further Antibacterial zeolite powders were prepared by loading metal ions such as, Ag+ and Zn2+, Ag+ and Cu2+, Zn2+and Cu2+, Ag+ and Cu2+and Zn2+, through ion exchange. The powders were characterized by minimum Inhibitory concentration (MIC), SEM/EDXA and XRD. Antibacterial paper with antibacterial zeolite powders as filler was fabricated. The results demonstrated that MIC of loading (Ag++Zn2+) zeolite was 125ppm against Staphylococcus aureus and Escherichia coli . MIC of loading (Ag++Cu2++Zn2+) zeolite was 62.5ppm against Candida albicans and Aspergillus Niger. By adding 6% of (Ag++Zn2+), (Ag++Cu2+), and (Ag++Cu2++Zn2+) antibacterial zeolite powders, respectively, antibacterial paper were prepared; and the antibacterial rate of these papers against Staphylococcus aureus, Escherichia coli, Candida albicans and Aspergillus Niger for 4h is close to 100%.

Preparation of Bactericadal Fillers From Georgian Heulandite-Clinoptilolite and Their Application for Paper Production. Ii. Bactericadal Paper

“…for P-CuHCR 2 and P-ZnHCR 2 . The content of zeolite and silver in sample P-AgHCR approximately corresponds to that indicated in [4] for zeolites immobilized on cellulose nanofiber mats, and in [5] for zeolite powders delivering antibacterial performance to cellulosic paper; the silver content is slightly lower, and the zinc content is slightly higher than in a FAU-type zeolite membranes with antimicrobial activity [7].…”

“…In papermaking, zeolites have been in use as fillers primarily to improve optical properties, bulkiness, printability, and to increase retention at the wet end since the 1960s [3], but research on the introduction of germicidal zeolite fillers into paper has only recently begun [4,5], although it has been suggested earlier [6] that zeolite formulations could be combined with various materials used in manufacturing medical devices, surfaces, textiles, or household items where antimicrobial properties are required..…”

Tensile and Stretch of Paper Filled With Bactericidal Zeolites

“…Research on the incorporation of germicidal zeolite fillers into paper has only recently begun [9][10][11], although it has previously been proposed [12] to combine zeolite formulations with various materials used in manufacturing medical devices, surfaces, textiles, or household items with antimicrobial properties required.…”