Preparation of pH-sensitive membranes via dopamine-initiated atom transfer radical polymerization

Surface engineering of polymer membranes via mussel-inspired chemistry

“…To address this problem, the authors developed the one-step co-deposition approach were grafted onto the membranes for pH-sensitive and anti-fouling properties [131]. (b) pH-dependent permeability of aqueous solutions through the pristine nylon membrane and nylon-g-PAAc membranes with monomer concentrations of 2%, 4% and 6% [130]. (c) Time-dependent flux of pristine PVDF membrane, PDOPA-coated membrane and PVDF-g-PHEMA membrane with an ATRP time of 10 min operated with BSA solution for three cycles [131].…”

“…Since the mussel-mimetic initiators were developed by Messersmith et al [77,128], they have been widely applied in surface grafting on the membrane surface [78,129]. For instance, pH-sensitive polymer, poly(acrylic acid) (PAA), was grafted onto a nylon membrane via SI-ATRP, which was initiated from a PDAconjugated ATRP initiator [130]. Similar to the one-step covalent grafting, the hydrophilic polymer brushes can also be constructed via SI-ATRP to improve the anti-fouling and antibacterial properties.…”

From Self-Assembled Monolayers to Coatings: Advances in the Synthesis and Nanobio Applications of Polymer Brushes

“…A different method for producing an inimer layer is to form an adhesive coating, containing chemical groups to enable initiator incorporation. For example, layers of poly(allylamine) deposited by pulsed plasma polymerization [95,96], or catechol derivatives deposited by incubation in alkaline solution to form stable polydopamine layers on various substrates were functionalized with ATRP initiators (Figure 5a) [97][98][99][100][101][102][103][104]. More simply, a thin film of thermally crosslinked PGMA was formed on a silicon wafer, after which an ATRP initiator was introduced using the remaining epoxy groups [105].…”

Zwitterionic polymers grafted poly(ether sulfone) hollow fiber membranes and their antifouling behaviors for osmotic power generation

“…Recently, the biomimetic approach of dip-coating substrates in an aqueous solution of dopamine to form multifunctional polymer coatings has been widely studied [46][47][48][49][50][51][52]. Dopamine has similar adhesive proteins as mussel.…”