ANTIMICROBIAL HYBRID COATINGS MANUFACTURED BASED ON NOVEL COMPOUNDS WITH SPECIFIC BIOACTIVITY
Abstract
Novel hybrid antimicrobial coatings based on some heterochain polyurethanes modified by silicon organic polyfunctional oligomers and coordination compounds containing bis(η5-cyclopentadienyl)iron, polyfunctional asymmetric fragment and some biogenic elements simultaneously, also macro dispersed bioactive inorganic compounds have been obtained and studied for purpose of protection of human’s health, cultural heritage and museum exhibits. The main thermo physical and operational characteristics of the obtained materials have been studied. By thermogravimetric analysis has been established that up to 200oC obtained inorganic-organic hybrids are quite stable; by using of differential scanning calorimetric (DSC) method have been determined that glass transitions regions for all tested coatings are located above +50oC. It has been shown that the modification of polymeric matrices with silicon-organic oligomers causes decrease of glass transition temperatures to some extent. Some operational characteristics (isothermal aging, weatherability, photochemical stability, water absorption ability) of elaborated hybrid coatings have been studied.
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