Free-standing thermo-responsive nanoporous membranes from high molecular weight PS-PNIPAM block copolymers synthesizedviaRAFT polymerization

Abstract

Free-standing, fully reversible thermo-responsive nanoporous membranes were fabricated from PS-PNIPAM block copolymers.

Self-assembly of oppositely charged polyelectrolyte block copolymers containing short thermoresponsive blocks

“…† The chain transfer agent S,S′-bis(α,α′-dimethyl-α″-acetic acid) trithiocarbonate (BDAT) was synthesized using a previously described method. 26,27 Triblock synthesis and characterization Synthesis of poly-(N-isopropylacrylamide). NIPAM was recrystallized twice from n-hexane.…”

Thermo‐responsive mixed‐matrix hollow fiber membranes

“…Prior membrane manufacturing, copolymers of stimuli responsive polymers and membrane forming polymer can be synthesized by grafting the stimuli responsive polymer onto or from the membrane forming polymer, which are later used as membrane matrix like PNIPAM‐graft‐poly(vinylidenfluoride)) 12,13 . Beside polymer grafting, blockcopolymers with PNIPAM blocks were synthesized via reversible addition fragmentation chain transfer (RAFT) polymerization and used to prepare thermo‐responsive membranes 14 . Furthermore, these known stimuli‐responsive blockcopolymers can serve as additives in the membrane solution or as the membrane material themselves 15,16 …”

“…12,13 Beside polymer grafting, blockcopolymers with PNIPAM blocks were synthesized via reversible addition fragmentation chain transfer (RAFT) polymerization and used to prepare thermoresponsive membranes. 14 Furthermore, these known stimuli-responsive blockcopolymers can serve as additives in the membrane solution or as the membrane material themselves. 15,16 After membrane manufacturing, responsive polymers can be introduced by different grafting methods.…”

Exploring the Self-Assembly Capabilities of ABA-Type SBS, SIS, and Their Analogous Hydrogenated Copolymers onto Different Nanostructures Using Atomic Force Microscopy

“…Block copolymers display many potential applications in nanotechnology [ 13 , 14 , 15 ], lubricants [ 1 ], drug delivery [ 16 , 17 , 18 , 19 , 20 ], nanopatterning [ 21 , 22 , 23 , 24 , 25 ], nanoporous membranes [ 26 , 27 , 28 ], biosensors [ 29 , 30 , 31 , 32 , 33 ], electronics [ 1 , 10 ], thin-film technology [ 34 ], semiconductors [ 35 , 36 , 37 , 38 , 39 ], construction [ 40 , 41 ], etc. As morphologies with highly ordered domains are needed for most of those applications, the different orientations of block copolymer domains in the self-assembled morphologies are very crucial and attract a lot of interest.…”