Matches in SemOpenAlex for { <https://semopenalex.org/work/W3120222025> ?p ?o ?g. }
- W3120222025 endingPage "123287" @default.
- W3120222025 startingPage "123287" @default.
- W3120222025 abstract "The effect of electrolyte identity on the conformation of homopolymer brushes of poly(2-(2-methoxyethoxy) ethyl methacrylate) (PMEO2MA) and poly(2-(diethylamino)ethyl methacrylate) (PDEA), as well as a P(MEO2MA-co-DEA) copolymer brush of 90:10 mol% composition has been examined. PMEO2MA is a thermoresponsive polymer with a lower critical solution temperature of ~28 °C, PDEA a weak polybase with an apparent pKa of ~7.5, while the copolymer brush exhibits both pH and temperature responsive behaviour. Brushes were synthesised using surface initiated ARGET ATRP. The effect of temperature at low and high pH in the presence of different electrolytes on the thickness of the P(MEO2MA-co-DEA) 90:10 mol% brush was tracked with ellipsometry and the polymer volume fraction profile was elucidated with neutron reflectometry. The effect of each electrolyte on the copolymer brush conformation as the temperature changes could be switched by changing the pH from low (charged DEA segments) to high (uncharged DEA segments). The overall behaviour of the copolymer in each salt was PDEA-like at low pH, and MEO2MA-like at high pH. At low pH a reverse Hofmeister effect was observed, while at high pH a direct Hofmeister effect was observed." @default.
- W3120222025 created "2021-01-18" @default.
- W3120222025 creator A5020089033 @default.
- W3120222025 creator A5037329156 @default.
- W3120222025 creator A5037550880 @default.
- W3120222025 creator A5084579651 @default.
- W3120222025 creator A5091153242 @default.
- W3120222025 date "2021-02-01" @default.
- W3120222025 modified "2023-10-09" @default.
- W3120222025 title "The direction of influence of specific ion effects on a pH and temperature responsive copolymer brush is dependent on polymer charge" @default.
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