Nowadays, the use of antimicrobial coatings is increasing in many different applications. Researchers incorporated aminobenzothiazole (ABT) on the backbone of waterborne polyurethane in the chain extension process in order to obtain antimicrobial coatings. First of all, itaconic acid and 1,6-hexanediol based polyol was synthesized and then it was reacted with dimethylol propionic acid and isophoronediisocyanate to form a prepolymer. The prepolymer obtained was neutralized with triethylamine and 1,4-butanediol was used as a chain extender, followed by the addition of appropriate amount of water, as in a typical acetone process. Fourier transform infrared spectroscopy, particle size and zeta potential were used for the characterization of WPUDs. Thermal, mechanical and antimicrobial properties of cured films were also characterized. Antimicrobial activity with an approximate 60% inhibition rate was obtained for WPUD with 20% ABT content.

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Journal reference:  Polymer Bulletin

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