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A permanently antimicrobial polypropylene (PP-g-PHMG) was obtained by covalently bonding 0.5% poly(hexamethylendiamine-guanidine hydrochloride) (PHMG), a guanidine-based antimicrobial polymer, based on total weight onto polypropylene (PP) matrix using a melt grafting method in supercritical CO 2 (SC CO 2 ) assisted process. Attributed to the higher grafting efficiency, the hydrophilic...
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