Prediction of solvent-induced morphological changes of polyelectrolyte diblock copolymer micelles

Soft Matter ◽  
2015 ◽  
Vol 11 (42) ◽  
pp. 8236-8245 ◽  
Author(s):  
Nan K. Li ◽  
William H. Fuss ◽  
Lei Tang ◽  
Renpeng Gu ◽  
Ashutosh Chilkoti ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Aqueous Solution ◽  
Diblock Copolymer ◽  
Diblock Copolymers ◽  
Morphological Changes ◽  
Copolymer Micelles

A comprehensive set of data is obtained with the utilization of ISIS DPD model to construct the phase diagram of amphiphilic polyelectrolyte diblock copolymers in aqueous solution.

pH-Responsive Diblock Copolymer Micelles at the Silica/Aqueous Solution Interface:  Adsorption Kinetics and Equilibrium Studies

2006 ◽  
Vol 110 (30) ◽  
pp. 14744-14753 ◽  
Author(s):  
Kenichi Sakai ◽  
Emelyn G. Smith ◽  
Grant B. Webber ◽  
Christophe Schatz ◽  
Erica J. Wanless ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Kinetics ◽  
Diblock Copolymer ◽  
Ph Responsive ◽  
Equilibrium Studies ◽  
Solution Interface ◽  
Copolymer Micelles

Characterizing the pH-Responsive Behavior of Thin Films of Diblock Copolymer Micelles at the Silica/Aqueous Solution Interface

Langmuir ◽  
2006 ◽  
Vol 22 (20) ◽  
pp. 8435-8442 ◽  
Author(s):  
Kenichi Sakai ◽  
Emelyn G. Smith ◽  
Grant B. Webber ◽  
Murray Baker ◽  
Erica J. Wanless ◽  
...  
Keyword(s):  
Thin Films ◽  
Aqueous Solution ◽  
Diblock Copolymer ◽  
Ph Responsive ◽  
Solution Interface ◽  
Responsive Behavior ◽  
Copolymer Micelles

scholarly journals Neutron Spin−Echo Study of the Dynamic Behavior of Amphiphilic Diblock Copolymer Micelles in Aqueous Solution

Langmuir ◽  
2000 ◽  
Vol 16 (24) ◽  
pp. 9177-9185 ◽  
Author(s):  
Hideki Matsuoka ◽  
Yusuke Yamamoto ◽  
Minoru Nakano ◽  
Hitoshi Endo ◽  
Hitoshi Yamaoka ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Dynamic Behavior ◽  
Diblock Copolymer ◽  
Spin Echo ◽  
Neutron Spin ◽  
Amphiphilic Diblock Copolymer ◽  
Neutron Spin Echo ◽  
Copolymer Micelles

scholarly journals Phase Diagram for Ideal Diblock-Copolymer Micelles Compared to Polymerization-Induced Self Assembly

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2599
Author(s):  
Alexey A. Gavrilov ◽  
Ruslan M. Shupanov ◽  
Alexander V. Chertovich
Keyword(s):  
Phase Diagram ◽  
Transition Region ◽  
Diblock Copolymer ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Dynamic Equilibrium ◽  
Polymer Concentration ◽  
Quantitative Agreement ◽  
Wide Range ◽  
Polymer Volume

In this work we constructed a detailed phase diagram for the solutions of ideal diblock-copolymers and compared such diagram with that obtained during polymerization-induced self-assembly (PISA); a wide range of polymer concentrations as well as chain compositions was studied. As the length of the solvophobic block nB increases (the length of the solvophilic block nA was fixed), the transition from spherical micelles to cylinders and further to vesicles (lamellae) occurs. We observed a rather wide transition region between the spherical and cylindrical morphology in which the system contains a mixture of spheres and short cylinders, which appear to be in dynamic equilibrium; the transition between the cylinders and vesicles was found to be rather sharp. Next, upon increasing the polymer concentration in the system, the transition region between the spheres and cylinders shifts towards lower nB/nA values; a similar shift but with less magnitude was observed for the transition between the cylinders and vesicles. Such behavior was attributed to the increased number of contacts between the micelles at higher polymer volume concentrations. We also found that the width of the stability region of the cylindrical micelles for small polymer volume concentrations is in good quantitative agreement with the predictions of analytical theory. The obtained phase diagram for PISA was similar to the case of presynthesized diblock copolymer; however, the positions of the transition lines for PISA are slightly shifted towards higher nB/nA values in comparison to the presynthesized diblock copolymers, which is more pronounced for the case of the cylinders-to-vesicles transition. We believe that the reason for such behavior is the polydispersity of the core-forming blocks: The presence of the short and long blocks being located at the micelle interface and in its center, respectively, helps to reduce the entropy losses due to the insoluble block stretching, which leads to the increased stability of more curved micelles.

Comparison of the Adsorption of Cationic Diblock Copolymer Micelles from Aqueous Solution onto Mica and Silica

Langmuir ◽  
2006 ◽  
Vol 22 (12) ◽  
pp. 5328-5333 ◽  
Author(s):  
Kenichi Sakai ◽  
Emelyn G. Smith ◽  
Grant B. Webber ◽  
Christophe Schatz ◽  
Erica J. Wanless ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Diblock Copolymer ◽  
Copolymer Micelles

scholarly journals Synthesis of diblock copolymer spheres, worms and vesicles via RAFT aqueous emulsion polymerization of hydroxybutyl methacrylate

2021 ◽  
Author(s):  
Saul J. Hunter ◽  
Joseph R. Lovett ◽  
Oleksandr O. Mykhaylyk ◽  
Elizabeth R. Jones ◽  
Steven P. Armes
Keyword(s):  
Phase Diagram ◽  
Emulsion Polymerization ◽  
Diblock Copolymer ◽  
Aqueous Emulsion

RAFT aqueous emulsion polymerization of hydroxybutyl methacrylate using a poly(glycerol monomethacrylate) precursor leads to diblock copolymer spheres, worms or vesicles. A pseudo-phase diagram is constructed and the vesicles are briefly evaluated as a Pickering emulsifier.

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