Physical Properties of PBMA-b-PBA-b-PBMA Triblock Copolymers Synthesized by Atom Transfer Radical Polymerization

2003 ◽  
Vol 204 (16) ◽  
pp. 2007-2016 ◽  
Author(s):  
Luis Martín-Gomis ◽  
Marta Fernández-García ◽  
José Luis de la Fuente ◽  
Enrique López Madruga ◽  
María L. Cerrada
Keyword(s):  
Physical Properties ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Triblock Copolymers ◽  
Atom Transfer

Nanoscale structure of SAN–PEO–SAN triblock copolymers synthesized by atom transfer radical polymerization

Polymer ◽  
2006 ◽  
Vol 47 (19) ◽  
pp. 6673-6683 ◽  
Author(s):  
Michal Shach-Caplan ◽  
Michael S. Silverstein ◽  
Havazelet Bianco-Peled ◽  
Nicolay V. Tsarevsky ◽  
Beth M. Cooper ◽  
...  
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Triblock Copolymers ◽  
Atom Transfer ◽  
Nanoscale Structure

Synthesis of Novel Amphiphilic Block Copolymers of Poly-N-vinylpyrrolidone and Poly (D, L-lactide) by Atom Transfer Radical Polymerization

2006 ◽  
Vol 11-12 ◽  
pp. 461-464 ◽  
Author(s):  
Shu Xian Shi ◽  
Jian Liu ◽  
Yu Zheng Xia ◽  
Shu Ke Jiao ◽  
Xiao Yu Li
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Triblock Copolymers ◽  
Analytical Techniques ◽  
Catalyst System ◽  
Amphiphilic Polymer ◽  
Amphiphilic Block Copolymers ◽  
Atom Transfer ◽  
Polymer Micelle ◽  
Core Shell Structure

In order to improve the hydrophilicity of poly (D,L-latide) (PDLLA), a novel amphiphilic ABA-type triblock copolymers of poly-N-vinylpyrrolidone (A) and poly (D, L-lactide) (B), were successfully synthesized by atom transfer radical polymerization (ATRP) using N-vinylpyrrolidone (VP) as monomer, bromide-terminated poly (D,L-latide) oligomer (Br-PDLLA-Br) as functional macromolecular initiator which was prepared when hydroxy-terminated poly(D,L-latide) oligomer (HO-PDLLA-OH) reacted with 2-bromopropanoyl bromide, CuBr/2,2’-bipyridine complex as the catalyst system. The resulting copolymers were characterized by various analytical techniques. The results showed that the introduction of poly (N-vinylpyrrolidone) (PVP) segments into polylactide enhanced the surface hydrophilicity of the copolymers remarkably and amphiphilic polymer can self-assemble into core-shell structure (polymer micelle) in water by the balance of the hydrophilic and hydrophobic interaction.

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