A dendritic-linear block copolymer as a thermoresponsive non-ionic polymer surfactant. (September 2019)

• Record Type: Journal Article
• Authors: Joe, Jung Ho; Park, Jong Min; Lee, Hosoowi; Jang, Woo-Dong
• Is Part Of: European polymer journal. Volume 118(2019)
• Page Start: 320
• Page End: 326
• Publication Date: 2019-09
• Subjects: Poly(2-ethyl-2-oxazoline) -- Alkyl-bearing aryl ether dendrimer -- Nonionic polymer surfactant -- Phase transition temperature -- Dye-removal; RB Rose Bengal -- LCST lower critical solution temperature -- SEC size exclusion chromatography -- MALDI-TOF-MS Matrix-assisted laser desorption ionization time-of-flight mass spectrometry -- DLS dynamic light scattering -- CMC critical micelle concentration -- PBS phosphate-buffered solution -- CROP cationic ring opening polymerization; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; Polymerization; Polymers; Periodicals; Electronic journals; 547.705
• DOI: 10.1016/j.eurpolymj.2019.06.007
• Languages: English
• ISSNs: 0014-3057

Abstract

Graphical abstract: Highlights: A dendritic-line block copolymer (Den-PEtOx ) was synthesized. Den-PEtOx forms a micelle structure and encapsulates Rose Bengal in water. Rose Bengal-encapsulatedDen-PEtOx exhibits a phase transition at 63.5 °C. Over 99% of Rose Bengal was removed via filtration above the LCST ofDen-PEtOx . Abstract: Issues related to water pollution by a variety of pollutants must be resolved for sustainable development. Over the past decades, several methods have been developed for pollutant removal from aqueous media. In this study, a dendritic-linear block copolymer (Den-PEtOx ) was synthesized as a thermoresponsive non-ionic polymer surfactant, and its structure was confirmed by NMR, MALDI-TOF-MS, and SEC measurements.Den-PEtOx formed micelle structures with an average diameter of 121.6 nm and effectively encapsulated Rose Bengal (RB) red dye dissolved in aqueous media. RB-encapsulatedDen-PEtOx exhibited a phase transition temperature at 62.4 °C owing to its thermoresponsive poly(2-ethyl-2-oxazoline) segment. Greater than 99% of RB in the aqueous media was successfully removed withDen-PEtOx via filtration above the phase transition temperature.