Mussel‐inspired catechol‐based chemistry for direct construction of super‐hydrophilic and waterproof coatings on intrinsic hydrophobic surfaces

Abstract

Super‐hydrophilic coatings are useful in many applications such as agricultural greenhouses. However, the direct modification of super‐hydrophilic coatings on intrinsic hydrophobic surfaces is still a challenge, particularly without any pretreatment. Here, highly transparent super‐hydrophilic and waterproof coatings on intrinsic hydrophobic surfaces were prepared via layer‐by‐layer (LbL) assembly catechol‐grafted polymer‐branched poly(ethylenimine) (bPEI)‐3‐(3,4‐dihydroxyphenyl)propionic acid (denoted as C) and poly(acrylic acid) (PAA)‐dopamine (denoted as D) inspired by the mussel. The catechol‐functionalized polymer facilitates a mechanically robust coating that is tightly attached to the surface of the intrinsic hydrophobic polymers. This gives the coating excellent antifogging ability with a lowest contact angle of 0°. These coatings also demonstrated excellent stability after cross‐linking with Fe3+ or alkali species. The super‐hydrophilic and waterproof coatings on intrinsic hydrophobic surfaces can also be prepared by the spray method. The super hydrophilic coating exhibits favorable antifogging ability, making it potentially useful in numerous applications. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48013.

Mussel‐inspired polymer materials derived from nonphytogenic and phytogenic catechol derivatives and their applications

“…Thus, the catechol groups in DOPA play a key role in adhesion 5–7 . Inspired by DOPA's natural chemistry, many researchers have exploited catechol functionalization in the translation of this bio‐adhesion to synthetic systems and for use in various applications such as functional materials, tissue adhesives for medicine, marine antifouling surfaces, oil‐in‐water emulsion separation materials and so on 8–17 . Li et al 18 .…”

Facile preparation of a crosslinked hydrophilic UHMWPE membrane

“…The alternative attractive modification technology is surface grafting, including chemically, UV‐, electron beam‐, and plasma‐induced graft polymerization. Though the graft polymerization may be more stable and durable than blending or doping methods, it requires a more complicated procedure and additional equipment . On the other side, UHMWPE traditional process is for porous filter is sinter.…”

“…Though the graft polymerization may be more stable and durable than blending or doping methods, it requires a more complicated procedure and additional equipment. [21][22][23][24][25][26][27][28] On the other side, UHMWPE traditional process is for porous filter is sinter. That means UHMWPE particles are first put into the mold and then exerted a certain pressure with a temperature of melt point for several hours inside a heating furnace.…”

Preparation of organic–inorganic hybridized dual‐functional antifog/antireflection coatings on plastic substrates

“…In addition to AR, antifogging (AF) is another useful property for optical coatings to acquire, particularly when the coating surface is susceptible to moisture condensation. Many researches pertaining to this subject have been reported and reviewed . Over the last decades, dual‐functional antifogging/antireflection (AFAR) coating techniques were widely developed .…”

“…Many researches pertaining to this subject have been reported and reviewed. [6][7][8][9][10][11][12][13][14][15][16] Over the last decades, dual-functional antifogging/antireflection (AFAR) coating techniques were widely developed. [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] However, since most plastic substrates suffer from the drawback of thermal resistance, AFAR coatings on plastic substrates emerge not until recently.…”