Evaluation of bactericidal properties of PVC-compositions for linoleum production

Abstract

The present paper deals with evaluating bactericidal properties of polyvinylchloride compositions for linoleum manufacturing. PVC-floor coatings are widely used in health care facilities, hospitals and outpatient departments due to antistatic properties, non-toxicity, advanced resistance to wear, fastness to water, functionality and improved durability. Strict standards of resistance to bacteria and fungi are applied to this type of coatings due to their exposure to detergents and washing agents. Modifying PVCcomposition by calcium methylsilicate, also known as wollastonite, increases its resistance to Gram-positive and Gram-negative organisms. Cationic surface-active substances are active to both type of microorganisms and could withstand propagation of bacterial medium on polyvinylchloride linoleum surface. They also exhibit the functions of biostatics inhibiting the growth of microorganisms and of bactericides killing microorganisms. Quaternary ammonium compounds represent efficient group of biocides for water-dispersible coating materials and for this reason their investigation for PVC-linoleum is of utmost interest. PVC floor coatings modified by wollastonite are more resistant to aggressive chemical liquids and microorganisms than linoleum with the base composition. The authors proved that PVC-based linoleum with surface-activated filler, wollastonite, had shown enhanced fastness to water and higher resistance to water solutions of antiseptic agents and bacteria.

Influence of rice husk ash and wollastonite on plasticizer migration in polyvinyl chloride system

“…Thus, wollastonite can be effectively used as a modifier in PVC compositions for the production of vinyl floorings 23 . At the same time, it is important to note that this calcium silicate has a white color, in contrast to the dark gray or black color of rice husk ash 3 . This provides the best decorative qualities of linoleum, made on the basis of a PVC‐filled composition.…”

“…The introduction of the optimal type of plasticizer makes it possible to reduce the glass transition temperature and improve the deformation‐strength properties and thermal stability 1,2 . In this case, such a problem arises as the migration of the plasticizer from PVC 1,3–6 …”

Risks Associated with the Presence of Polyvinyl Chloride in the Environment and Methods for Its Disposal and Utilization

“…PVC composites for linoleum are equipped with antibacterial agents (e.g., 1,3-dioxanes, wollastonite, or quaternary ammonium biocides); therefore, they exhibit functions of biostatics, inhibiting the growth of microorganisms and bactericides, killing the microorganisms [ 77 , 78 ].…”

Study of the Resistance of PVC Composite Materials Modified with Wollastonite Activated by QAS to Bacteria

“…Quaternary ammonium compounds cause destruction of the bacterial cell wall and leakage of cytoplasm from the cells [7]. Broad antimicrobial activity and surfactant properties have made quaternary ammonium compounds the preferred additives for PVC medical grade materials [7].…”