Ubiquitous Nature of Rate Retardation in Reversible Addition–Fragmentation Chain Transfer Polymerization

2021 ◽  
Author(s):  
Kate G. E. Bradford ◽  
Leilah M. Petit ◽  
Richard Whitfield ◽  
Athina Anastasaki ◽  
Christopher Barner-Kowollik ◽  
...  
Keyword(s):  
Chain Transfer ◽  
Reversible Addition ◽  
Rate Retardation ◽  
Chain Transfer Polymerization

A Quantum-Chemical Approach to Understanding Reversible Addition Fragmentation Chain-Transfer Polymerization

2004 ◽  
Vol 57 (12) ◽  
pp. 1125 ◽  
Author(s):  
Michelle L. Coote
Keyword(s):  
Methyl Acrylate ◽  
Chain Transfer ◽  
Raft Polymerization ◽  
Polymerization Process ◽  
Test Case ◽  
Computational Quantum Chemistry ◽  
Reversible Addition ◽  
Rate Retardation ◽  
Fragmentation Reactions ◽  
Chain Transfer Polymerization

This article highlights some of the recent contributions that computational quantum chemistry has made to the understanding of the reversible addition fragmentation chain transfer (RAFT) polymerization process. These include recent studies of rate retardation in cumyl dithiobenzoate mediated polymerization of styrene and methyl acrylate and the xanthate mediated polymerization of vinyl acetate, and studies of the effects of substituents on the addition and fragmentation reactions in prototypical systems and polymer-related systems. The accuracy and applicability of theoretical procedures for studying free-radical polymerization are also discussed, and the methodology is evaluated using the homopropagation rate coefficient of methyl acrylate as a test case. The review concludes with a brief discussion of possible future developments in the field.

scholarly journals Synthesis of aminated polystyrene and its self-assembly with nanoparticles at oil/water interface

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 317-327
Author(s):  
Chenliang Shi ◽  
Ling Lin ◽  
Yukun Yang ◽  
Wenjia Luo ◽  
Maoqing Deng ◽  
...  
Keyword(s):  
Interfacial Tension ◽  
Self Assembly ◽  
Carbon Dots ◽  
Chain Transfer ◽  
Functionalized Polymers ◽  
Amino Groups ◽  
One Dimensional ◽  
Reversible Addition ◽  
Oil Water ◽  
Chain Transfer Polymerization

AbstractThe influence of density of amino groups, nanoparticles dimension and pH on the interaction between end-functionalized polymers and nanoparticles was extensively investigated in this study. PS–NH2 and H2N–PS–NH2 were prepared using reversible addition–fragmentation chain transfer polymerization and atom transfer radical polymerization. Zero-dimensional carbon dots with sulfonate groups, one-dimensional cellulose nanocrystals with sulfate groups and two-dimensional graphene with sulfonate groups in the aqueous phase were added into the toluene phase containing the aminated PS. The results indicate that aminated PS exhibited the strongest interfacial activity after compounding with sulfonated nanoparticles at a pH of 3. PS ended with two amino groups performed better in reducing the water/toluene interfacial tension than PS ended with only one amino group. The dimension of sulfonated nanoparticles also contributed significantly to the reduction in the water/toluene interfacial tension. The minimal interfacial tension was 4.49 mN/m after compounding PS–NH2 with sulfonated zero-dimensional carbon dots.

Well-Defined Vinyl Ketone-Based Polymers by Reversible Addition−Fragmentation Chain Transfer Polymerization

2007 ◽  
Vol 129 (33) ◽  
pp. 10086-10087 ◽  
Author(s):  
Chong Cheng ◽  
Guorong Sun ◽  
Ezat Khoshdel ◽  
Karen L. Wooley
Keyword(s):  
Chain Transfer ◽  
Vinyl Ketone ◽  
Reversible Addition ◽  
Chain Transfer Polymerization

Star-polymer synthesis via radical reversible addition-fragmentation chain-transfer polymerization

2001 ◽  
Vol 39 (16) ◽  
pp. 2777-2783 ◽  
Author(s):  
Martina Stenzel-Rosenbaum ◽  
Thomas P. Davis ◽  
Vicki Chen ◽  
Anthony G. Fane
Keyword(s):  
Chain Transfer ◽  
Polymer Synthesis ◽  
Star Polymer ◽  
Reversible Addition ◽  
Chain Transfer Polymerization
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