Facile synthesis of thermo-, pH-, CO2- and oxidation-responsive poly(amido thioether)s with tunable LCST and UCST behaviors. Issue 37 (1st September 2017)

• Record Type: Journal Article
• Authors: Zhang, Hongcan; Zhang, Jian; Dai, Wenxue; Zhao, Youliang
• Is Part Of: Polymer chemistry. Volume 8:Issue 37(2017)
• Page Start: 5749
• Page End: 5760
• Publication Date: 2017-09-01
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/c7py01351e
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : Multi-responsive N -substituted poly(amido thioether) copolymers synthesized by one-pot amine–thiol–acrylate polyaddition could exhibit composition-dependent and stimuli-triggered single or double thermoresponsivity. Abstract : The simple and straightforward construction of multi-responsive systems with tunable LCST and UCST dual phase transitions is a great challenge. This study affords an efficient route to tune cloud points via control over the chemical composition of hydroxyl and diethylamino bearing poly(amido thioether)s which were prepared by one-pot thiol–amine–acrylate polyaddition. Owing to the balance of inter/intrachain interactions, various copolymers could exhibit LCST ( f OH < 0.84), LCST–UCST ( f OH = 0.84–0.89) and UCST ( f OH > 0.89) behaviors relying on the hydroxyl fraction in comonomer units. Meanwhile, the thermoresponsive behaviors of copolymer solutions could be efficiently tuned via switching the solvent and solution pH, applying CO2 /N2 bubbling, and oxidation. The success of this study further paves the way for the robust synthesis and practical applications of smart polymers with double thermoresponsivity.