writer：Jie Zhao, Li Ma, William Millians, Tiehang Wu, Weihua Ming*
keywords：functional coating, antifogging, antimicrobial, quaternary ammonium compound (QAC),semi-interpenetrating polymer network (SIPN）
source：期刊
Issue time：2016年
Dual-functional antifogging/antimicrobial polymer coatings were prepared by forming a semi-interpenetrating polymer network (SIPN) of partially quaternized poly(2-(dimethylamino)ethyl methacrylate-co-methyl methacrylate), poly(DMAEMA-co-MMA), and polymerized ethylene glycol dimethacrylate network. The excellent antifogging behavior of the smooth coating was mainly attributed to the hydrophilic/hydrophobic balance of the partially quaternized copolymer, while the covalently bonded, hydrophobic quaternary ammonium compound (QAC, 5 mol% in the copolymer) rendered the coating strongly antimicrobial, as demonstrated by total kill against both Gram-positive S. epidermidis and Gram-negative E. coli. The antimicrobial action of the SIPN coating was based on contact killing, without leaching of bactericidal species, as revealed by a zone of inhibition test. This type of dual-functional coating may find unique applications where both antimicrobial and antifogging properties are desired.