Block Copolymer Surfactants in Emulsion Polymerization: Influence of the Miscibility of the Hydrophobic Block on Kinetics, Particle Morphology, and Film Formation

2011 ◽  
Vol 44 (11) ◽  
pp. 4282-4290 ◽  
Author(s):  
Alexandra Muñoz-Bonilla ◽  
Syed Imran Ali ◽  
Adolfo del Campo ◽  
Marta Fernández-García ◽  
Alex M. van Herk ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Emulsion Polymerization ◽  
Film Formation ◽  
Particle Morphology

scholarly journals RAFT Emulsion Polymerization for (Multi)block Copolymer Synthesis: Overcoming the Constraints of Monomer Order

2021 ◽  
Author(s):  
Murtaza Khan ◽  
Thiago R. Guimarães ◽  
Kenneth Choong ◽  
Graeme Moad ◽  
Sébastien Perrier ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Emulsion Polymerization

The Unlubricated Sliding Wear Behavior of Polyetheretherketone Against Smooth Mild-Steel Counterfaces

1991 ◽  
Vol 113 (1) ◽  
pp. 150-157 ◽  
Author(s):  
T. C. Ovaert ◽  
H. S. Cheng
Keyword(s):  
Mild Steel ◽  
Sliding Wear ◽  
Elastic Stress ◽  
Wear Behavior ◽  
Film Formation ◽  
Particle Morphology ◽  
Wear Particle ◽  
Morphological Studies ◽  
Contact Models ◽  
Counterface Roughness

In this investigation, the sliding wear of polyetheretherketone (PEEK) against smooth (polished) and slightly roughened mild-steel counterfaces was studied under dry, lightly-loaded conditions. In this counterface roughness regime, the wear rate of PEEK decreased to a relative minimum as roughness increased. The worn system of PEEK against polished steel was simulated using several contact models. The application of a numerical non-Hertzian elastic stress analysis yielded estimates of subsurface stresses, which were correlated with results of wear particle morphological studies. As counterface roughness increased, minor changes were observed in the wear mechanism. Wear particle morphology, however, displayed evidence of mechanical counterface interaction resulting in interfacial film formation and reduced wear.

Amphiphilic glycosylated block copolypeptides as macromolecular surfactants in the emulsion polymerization of styrene

2015 ◽  
Vol 6 (25) ◽  
pp. 4634-4640 ◽  
Author(s):  
Jaco Jacobs ◽  
Nicholas Gathergood ◽  
Johan P. A. Heuts ◽  
Andreas Heise
Keyword(s):  
Amino Acids ◽  
Block Copolymer ◽  
Emulsion Polymerization ◽  
Amphiphilic Block Copolymer ◽  
Block Copolypeptides

Bio-inspired amphiphilic block copolymer surfactants fully derived from amino acids and sugars are synthesised. The materials are successfully employed in the synthesis of polystyrene latexes by emulsion polymerization.

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