Failure issue of paper-making bactericide additive

Commonly used additives for paper-making bactericides include starch, protein, titanium dioxide, calcium carbonate, sizing agents, and defoamers. Microbial contamination in these additives originates from various sources, including improper handling of dilution water and condensate water. Of course, purchased additives also contain a significant amount of contaminating microorganisms. Next, the editor from Xiangze Chemical will introduce the issue of failure of paper-making bactericidal additives:

The growth of microorganisms in paper-making biocides is often accompanied by changes in additive viscosity, pH value reduction, and the production of off-odors. Among these, starch and protein are the most noteworthy, as they are ideal nutrient sources for microorganisms. Microorganisms can convert starch into sugars and degrade proteins into amino acids, which facilitate their growth and reproduction. Although other additives are not the best nutrient sources for microorganisms, they contain dispersants that are crucial to their function. If these dispersants are degraded by microorganisms, changes in pH value, viscosity, and other factors will occur. For example, microparticles will be generated in white clay, precipitated and ground calcium carbonate, and titanium dioxide, leading to micro-aggregation and the formation of micro-clusters, which can cause fine scratches on the coating surface.

 The paper bactericide produced by Xiangze Chemical has the characteristics of high temperature resistance, high humidity resistance, low moisture regain, improved paper hardness, safety, and environmental friendliness. Interested parties are welcome to inquire in detail.