scholarly journals Aqueous solution behavior of stimulus-responsive poly(methacrylic acid)-poly(2-hydroxypropyl methacrylate) diblock copolymer nanoparticles

2020 ◽  
Vol 11 (12) ◽  
pp. 2147-2156 ◽  
Author(s):  
Shannon M. North ◽  
Steven P. Armes
Keyword(s):  
Aqueous Solution ◽  
Methacrylic Acid ◽  
Diblock Copolymer ◽  
Dispersion Polymerization ◽  
Aqueous Dispersion ◽  
Solution Temperature ◽  
Solution Ph ◽  
Solution Behavior ◽  
Hydroxypropyl Methacrylate ◽  
Stimulus Responsive

RAFT aqueous dispersion polymerization is used to prepare poly(methacrylic acid)-poly(2-hydroxypropyl methacrylate) diblock copolymer nanoparticles, which exhibit stimulus-responsive behaviour on adjusting the solution temperature and/or solution pH.

scholarly journals Stimulus-responsive non-ionic diblock copolymers: protonation of a tertiary amine end-group induces vesicle-to-worm or vesicle-to-sphere transitions

2017 ◽  
Vol 8 (1) ◽  
pp. 272-282 ◽  
Author(s):  
Nicholas J. W. Penfold ◽  
Joseph R. Lovett ◽  
Pierre Verstraete ◽  
Johan Smets ◽  
Steven P. Armes
Keyword(s):  
Tertiary Amine ◽  
Diblock Copolymer ◽  
Diblock Copolymers ◽  
Solution Ph ◽  
Hydroxypropyl Methacrylate ◽  
Stimulus Responsive ◽  
End Group

Morpholine-functionalised poly(glycerol monomethacrylate)-poly(2-hydroxypropyl methacrylate) diblock copolymer vesicles are transformed into worms or spheres on lowering the solution pH.

scholarly journals One-pot synthesis and aqueous solution properties of pH-responsive schizophrenic diblock copolymer nanoparticles prepared via RAFT aqueous dispersion polymerization

2021 ◽  
Author(s):  
S. M. North ◽  
S. P. Armes
Keyword(s):  
Aqueous Solution ◽  
Diblock Copolymer ◽  
Dispersion Polymerization ◽  
Aqueous Dispersion ◽  
Solution Properties ◽  
Ph Responsive ◽  
One Pot ◽  
One Pot Synthesis ◽  
Isoelectric Points

Well-defined doubly pH-responsive schizophrenic diblock copolymer nanoparticles with tunable isoelectric points are prepared via RAFT aqueous dispersion polymerization using an efficient one-pot protocol.

Synthesis and Aqueous Solution Behavior of a pH-Responsive Schizophrenic Diblock Copolymer

Langmuir ◽  
2003 ◽  
Vol 19 (10) ◽  
pp. 4432-4438 ◽  
Author(s):  
Shiyong Liu ◽  
Steven P. Armes
Keyword(s):  
Aqueous Solution ◽  
Diblock Copolymer ◽  
Ph Responsive ◽  
Solution Behavior

scholarly journals Synthesis of Calcium Silicate Hydrate from Coal Gangue for Cr(VI) and Cu(II) Removal from Aqueous Solution

Molecules ◽  
2021 ◽  
Vol 26 (20) ◽  
pp. 6192
Author(s):  
Qing Zhang ◽  
Guijian Liu ◽  
Shuchuan Peng ◽  
Chuncai Zhou
Keyword(s):  
Aqueous Solution ◽  
Reaction Time ◽  
Calcium Silicate ◽  
Calcium Silicate Hydrate ◽  
Variable Temperature ◽  
Coal Gangue ◽  
Molar Ratio ◽  
Solution Temperature ◽  
Solution Ph ◽  
Adsorption Temperature

Both the accumulation of coal gangue and potentially toxic elements in aqueous solution have caused biological damage to the surrounding ecosystem of the Huainan coal mining field. In this study, coal gangue was used to synthesize calcium silicate hydrate (C-S-H) to remove Cr(VI) and Cu(II)from aqueous solutions and aqueous solution. The optimum parameters for C-S-H synthesis were 700 °C for 1 h and a Ca/Si molar ratio of 1.0. Quantitative sorption analysis was done at variable temperature, C-S-H dosages, solution pH, initial concentrations of metals, and reaction time. The solution pH was precisely controlled by a pH meter. The adsorption temperature was controlled by a thermostatic gas bath oscillator. The error of solution temperature was controlled at ± 0.3, compared with the adsorption temperature. For Cr(VI) and Cu(II), the optimum initial concentration, temperature, and reaction time were 200 mg/L, 40 °C and 90 min, pH 2 and 0.1 g C-S-H for Cr(VI), pH 6 and 0.07 g C-S-H for Cu(II), respectively. The maximum adsorption capacities of Cr(VI) and Cu(II) were 68.03 and 70.42 mg·g−1, respectively. Furthermore, the concentrations of Cu(II) and Cr(VI) in aqueous solution could meet the surface water quality standards in China. The adsorption mechanism of Cu(II) and Cr(VI) onto C-S-H were reduction, electrostatic interaction, chelation interaction, and surface complexation. It was found that C-S-H is an environmentally friendly adsorbent for effective removal of metals from aqueous solution through different mechanisms.

scholarly journals Synthesis of poly(stearyl methacrylate)-poly(2-hydroxypropyl methacrylate) diblock copolymer nanoparticles via RAFT dispersion polymerization of 2-hydroxypropyl methacrylate in mineral oil

2020 ◽  
Vol 11 (28) ◽  
pp. 4579-4590 ◽  
Author(s):  
Csilla György ◽  
Saul J. Hunter ◽  
Chloé Girou ◽  
Matthew J. Derry ◽  
Steven P. Armes
Keyword(s):  
Diblock Copolymer ◽  
Dispersion Polymerization ◽  
Mineral Oil ◽  
Hydroxypropyl Methacrylate ◽  
Stearyl Methacrylate

RAFT dispersion polymerization of 2-hydroxypropyl methacrylate produces diblock copolymer spheres, worms or vesicles in mineral oil; the Pickering emulsifier performance of the spheres is examined.

scholarly journals All-aqueous continuous-flow RAFT dispersion polymerisation for efficient preparation of diblock copolymer spheres, worms and vesicles

2019 ◽  
Vol 4 (5) ◽  
pp. 852-861 ◽  
Author(s):  
Sam Parkinson ◽  
Nicole S. Hondow ◽  
John S. Conteh ◽  
Richard A. Bourne ◽  
Nicholas J. Warren
Keyword(s):  
Block Copolymer ◽  
Diblock Copolymer ◽  
Continuous Flow ◽  
Dispersion Polymerization ◽  
Aqueous Dispersion

A continuous-flow platform enables rapid kinetic profiling and accelerated production of block copolymer nano-objects via RAFT aqueous dispersion polymerization.

scholarly journals Polysulfobetaine-based diblock copolymer nano-objects via polymerization-induced self-assembly

2015 ◽  
Vol 6 (41) ◽  
pp. 7264-7273 ◽  
Author(s):  
Kay E. B. Doncom ◽  
Nicholas J. Warren ◽  
Steven P. Armes
Keyword(s):  
Diblock Copolymer ◽  
Self Assembly ◽  
Dispersion Polymerization ◽  
High Tolerance ◽  
Hydroxypropyl Methacrylate ◽  
Added Salt

A zwitterionic polysulfobetaine-based macro-CTA is used for the synthesis of spheres, worms or vesiclesviaaqueous RAFT dispersion polymerization of 2-hydroxypropyl methacrylate (HPMA). These new diblock copolymer nano-objects exhibit high tolerance of added salt.

scholarly journals Synthesis and Aqueous Solution Properties of Shape-Shifting Stimulus-Responsive Diblock Copolymer Nano-Objects

2021 ◽  
Author(s):  
Oliver J. Deane ◽  
James Jennings ◽  
Thomas J. Neal ◽  
Osama M. Musa ◽  
Alan Fernyhough ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Diblock Copolymer ◽  
Solution Properties ◽  
Stimulus Responsive

scholarly journals Shape-shifting thermoreversible diblock copolymer nano-objects via RAFT aqueous dispersion polymerization of 4-hydroxybutyl acrylate

2021 ◽  
Author(s):  
Oliver J. Deane ◽  
James Jennings ◽  
Steven P. Armes
Keyword(s):  
Diblock Copolymer ◽  
Dispersion Polymerization ◽  
Aqueous Dispersion ◽  
Nmr Studies ◽  
H Nmr

RAFT aqueous dispersion polymerization of 4-hydroxybutyl acrylate (HBA) affords shape-shifting thermoresponsive diblock copolymer nano-objects. 1H NMR studies suggest that such behavior involves uniform plasticization of the PHBA block.

Synthesis of poly(2-hydroxypropyl methacrylate) latex particles via aqueous dispersion polymerization

Soft Matter ◽  
2007 ◽  
Vol 3 (8) ◽  
pp. 1003 ◽  
Author(s):  
A. M. I. Ali ◽  
P. Pareek ◽  
L. Sewell ◽  
A. Schmid ◽  
S. Fujii ◽  
...  
Keyword(s):  
Dispersion Polymerization ◽  
Aqueous Dispersion ◽  
Latex Particles ◽  
Hydroxypropyl Methacrylate
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