Kinetics of in-Situ Formation of Poly(acrylic acid)-b-polystyrene Amphiphilic Block Copolymers via Nitroxide-Mediated Controlled Free-Radical Emulsion Polymerization. Discussion on the Effect of Compartmentalization on the Polymerization Rate

2008 ◽  
Vol 41 (7) ◽  
pp. 2361-2367 ◽  
Author(s):  
Guillaume Delaittre ◽  
Bernadette Charleux
Keyword(s):  
Free Radical ◽  
Block Copolymers ◽  
Acrylic Acid ◽  
Emulsion Polymerization ◽  
Polymerization Rate ◽  
Amphiphilic Block Copolymers ◽  
In Situ Formation ◽  
Kinetics Of ◽  
Poly Acrylic Acid

Calcite nucleation on the surface of PNIPAM–PAAc micelles studied by time resolved in situ PXRD

CrystEngComm ◽  
2015 ◽  
Vol 17 (36) ◽  
pp. 6940-6946 ◽  
Author(s):  
Anders C. S. Jensen ◽  
Mogens Hinge ◽  
Henrik Birkedal
Keyword(s):  
Block Copolymers ◽  
Acrylic Acid ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray ◽  
Formation Kinetics ◽  
Nanocrystal Formation ◽  
Poly Acrylic Acid

Nanocrystalline calcite is formed under the influence of block copolymers containing thermoresponsive PNIPAM and a mineralization controlling block of poly(acrylic acid) and the nanocrystal formation kinetics studied by in situ X-ray diffraction.

Novel tri-block copolymers of poly(acrylic acid)-b-poly(2,2,3,3,4,4,4-hexafluorobutyl acrylate)-b-poly(acrylic acid) prepared via two-step RAFT emulsion polymerization

2016 ◽  
Vol 7 (24) ◽  
pp. 3993-3997 ◽  
Author(s):  
Zhi Qiao ◽  
Teng Qiu ◽  
Weiwei Liu ◽  
Longhai Guo ◽  
Xiaoyu Li
Keyword(s):  
Block Copolymers ◽  
Acrylic Acid ◽  
Emulsion Polymerization ◽  
Poly Acrylic Acid

A facile method for preparing ABA tri-block functional elastomers via two-step RAFT emulsion polymerization is introduced in this work.

scholarly journals Design of a pH-responsive Conductive Nanocomposite Based on MWCNTs Stabilized in Water by Amphiphilic Block Copolymers

2019 ◽  
Author(s):  
Frank den Hoed ◽  
Andrea Pucci ◽  
Francesco Picchioni ◽  
Patrizio Raffa
Keyword(s):  
Electrical Conductivity ◽  
Block Copolymers ◽  
Acrylic Acid ◽  
Zeta Potential ◽  
Amphiphilic Block Copolymers ◽  
Ph Responsive ◽  
Sensing Applications ◽  
Responsive Behavior ◽  
Ph Variations ◽  
Poly Acrylic Acid

Homogeneous water dispersions of MWCNTs were prepared by ultrasonication in the presence of an amphiphilic polystyrene-block-poly(acrylic acid) (PS-b-PAA) copolymer. The ability of PS-b-PAA to disperse and stabilize MWCTNs was investigated by UV-vis, SEM and zeta potential. It is shown that the copolymer can disperse nanotubes directly by sonication in water. The results show that the addition of a styrene block to PAA enhances the dispersion efficiency compared to pure PAA, possibly due to the nanotube affinity with the polystyrene moiety. Notably, the dispersions show an evident pH-responsive behavior, being MWCNTs reaggregation promoted in basic environment. Furthermore, composites obtained by drop casting display electrical conductivity responsive to pH variations, showing the potential of such materials for sensing applications.

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