Thermoresponsive polymers exhibiting unique reversible phase transition properties in aqueous solution in response to temperature stimuli have been extensively investigated. In the past two decades, thermoresponsive polymers based on tertiary amine moieties have achieved considerable progress and become an important family of thermoresponsive polymers, including tertiary amine functionalized poly((meth)acrylamide)s, poly((meth)acrylate)s, poly(styrene)s, poly(vinyl alcohol)s, and poly(ethylene oxide)s, which exhibit lower critical solution temperature and/or upper critical solution temperature in water or aliphatic alcohols. Their phase transition behavior can be modulated by the solution pH and CO2 due to the protonation of tertiary amine moieties in acidic condition and deprotonation in alkaline condition and the charged ammonium bicarbonate formed by the tertiary amine moieties and CO2. The aim of this review is to summarize the recent progress in the thermoresponsive polymers based on tertiary amine moieties.
For a general responsive polymer exhibiting thermoresponsive transition in a solvent at the upper critical solution temperature (UCST), the interaction between polymer chains and solvent molecules and the interaction among...
Since the discovery of polymerization‐induced self‐assembly (PISA), convenient synthesis of concentrated block copolymer nanoassemblies dispersed in solvent has been achieved. Now, application of block copolymer nanoassemblies should be paid more attention. In this study, corona‐cross‐linked block copolymer nanoparticles of poly[dimethylacrylamide‐co‐(diacetone acrylamide)]‐b‐polystyrene [P(DMA‐co‐DAAM)‐b‐PS] containing the poly(DAAM) segment in the hydrophilic P(DMA‐co‐DAAM) block are synthesized initially by PISA following dispersion reversible addition‐fragmentation chain transfer polymerization and then by covalent intraparticle cross‐linking through the poly(DAAM) segment and adipic acid dihydrazide. Coating application of the corona‐cross‐linked block copolymer nanoassemblies is tried, and much higher water resistance of the corona‐cross‐linked block copolymer nanoassemblies than that of the linear block copolymer nanoassemblies is demonstrated.
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