pH-sociated care coating for elastic floorings
IGF 20734 N
The aim of the research project is to develop pH-associated care coatings that can be applied in a single step, are highly resistant to wear and have a high barrier effect against dirt components during use and can be removed quickly during basic cleaning. Such pH-associated care films are based on specially developed bio-inspired polyacrylates with pH-switchable cross-linking functions in their side chains and pH-cleavable functions in their main chain.
Binding interactions (cooperative hydrogen bonds) between the pH-switchable cross-linking functions of the bioinspired polyacrylates and the urethane groups of the floor coverings lead to a high cohesive strength of the pH-associated care coatings and to a high adhesive strength between pH-associated care coatings and elastic floor coverings.
The high degree of cross-linking also leads to a high barrier effect of the pH-associated care coatings against dirt components. The network of bio-inspired polyacrylates is broken up during alkaline basic cleaning by the removal of the bonds formed by the pH-switchable cross-linking functions and hydrolysis of the pH-cleavable functions, forming charged, water-soluble, short-chain polymers.
Due to the high wear resistance as well as the high barrier effect of pH-associated care films even with low layer thickness, the basic cleaning interval can be significantly increased without damaging elastic floor coverings through wear or dirt migration. Due to the conversion to water-soluble polymers, the pH-associated care coatings can be removed quickly and without high mechanical action during basic cleaning, so that the effort required to renew care coatings can be reduced considerably.