https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50877 Wed 16 Aug 2023 10:51:36 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33530 Wed 14 Nov 2018 16:20:31 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46009 Wed 10 Apr 2024 15:33:13 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32551 Tue 23 Jun 2020 15:10:43 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33636 Mon 23 Sep 2019 12:18:04 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33529 CH₃CO₂¯ > Cl¯ > NO̅₃ ~Br¯> I¯ > SCN¯ for the potassium series and Na⁺ > K⁺ > Cs⁺ > Li⁺ ~ NH⁺₄ for the chloride salts. The electrophoretic mobility of the modified particles in the presence of 100 mM potassium salts increased in magnitude as the brush layer collapsed and also with the chaotropic nature of the anion.]]> Fri 31 Jan 2020 16:50:10 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33531 Fri 28 Jun 2019 11:32:06 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42771 2MA) 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 pK_a 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.]]> Fri 02 Sep 2022 10:32:17 AEST ]]>