Optically Transparent Antibacterial Films Capable of Healing Multiple Scratches

Abstract

Optically transparent antibacterial films capable of healing scratches and restoring transparency are fabricated by exponential layer‐by‐layer assembly of branched polyethylenimine (bPEI)/poly(acrylic acid) (PAA) films and post‐diffusion of cetyltrimethylammonium bromide micelles encapsulated with antibacterial agent triclosan. The triclosan‐loaded bPEI/PAA transparent films can effectively inhibit the growth of gram‐positive and gram‐negative bacteria by the sustained release of triclosan molecules. Healing of multiple scratches on the triclosan‐loaded bPEI/PAA films can be conveniently achieved by immersing the films in water or spraying water on the damaged films, which also fully restores their transparency. The self‐healing ability of these transparent antibacterial films originates from the ability of bPEI and PAA to flow and recombine in the presence of water. The triclosan‐loaded bPEI/PAA films have satisfactory mechanical stability under ambient conditions, and thus show potential for application as transparent protective films with antibacterial properties.

Self-Healing Superhydrophobic Fluoropolymer Brushes as Highly Protein-Repellent Coatings

“…16−18 Current research interests regarding self-healing materials are gradually moving from restoring mechanical 19 and structural 20 properties to healing functions, such as anticorrosive, 21−23 superhydrophobic, 24−30 superoleophobic, 31,32 electrical conduction, 33−36 antibacterial, 37 and antifouling 38−41 properties. Recently, maintaining long-lasting superhydrophobicity and antifouling properties using self-healing characteristics preprogrammed in the material draws broad attention.…”

Self-healable castor oil based tough smart hyperbranched polyurethane nanocomposite with antimicrobial attributes

“…[1][2][3] The self-healing capability of material helps to extend their service period, facilitates their maintenance and increases their reliability. 4 Recently, most of the self-healing materials are being developed based on encapsulation and reversible chemistry, with covalent and noncovalent chemical bonds. [5][6][7][8][9][10][11][12][13][14] The encapsulation approach is achieved by incorporation of microcapsules containing healing agent, which readily polymerizes in the damaged area upon release from the microcapsules.…”

Graphene improved electrochemical property in self-healing multilayer polyelectrolyte film

“…When the polymer film is stimulated by water, the degree of crosslinking becomes weaken, so that the polymer chain segment could move freely to repair the damaged parts. When withdraw the stimulus, polymer materials can restore the original crosslinking structure, thus polymer coating healing itself completely [25,26].…”