End-linked amphiphilic polymer conetworks: Synthesis by sequential atom transfer radical polymerization and swelling characterization

2010 ◽  
Vol 48 (9) ◽  
pp. 1878-1886 ◽  
Author(s):  
Maria D. Rikkou ◽  
Maria Kolokasi ◽  
Krzysztof Matyjaszewski ◽  
Costas S. Patrickios
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Amphiphilic Polymer ◽  
Atom Transfer

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.

Well-Defined Amphiphilic Polymer-Si(100) Hybrids via Surface-Initiated Atom Transfer Radical Polymerization

2013 ◽  
Vol 669 ◽  
pp. 239-245 ◽  
Author(s):  
Jin Wen Peng ◽  
Riu Hua Mo ◽  
Zhen Fan Liu ◽  
Yuan Wei Zhong ◽  
Qin Jie ◽  
...  
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Photoelectron Spectroscopy ◽  
Polymer Brushes ◽  
Amphiphilic Polymer ◽  
Atom Transfer ◽  
Poly Ethylene Glycol ◽  
X Ray ◽  
Atomic Force ◽  
Poly Ethylene

Well-defined amphiphilic graft polymer brushes containing fluoropolymer segments have been successfully prepared by (i) UV-induced coupling of 4-vinylbenzyl chloride (VBC) with the hydrogen-termined Si(100) (Si-VBC surface), (ii) surface-initiated atom transfer radical polymerization (ATRP) of 2-hydroxyethl methacrylate (HEMA) to produce the Si–VBC–g–P(HEMA) surface as the backbone of macroinitiator for further ATRPs, (iii) coupling of 2-bromoisobutyrl bromide with the HEMA polymer(P(HEMA)) by the esterification to produce the macroinitiators for the subsequent ATRP(Si–VBC–g–P(HEMA)-R3Br), (iv) surface-initiated ATRP of 2,2,3,3,4,4,4-heptafluorobutyl acrylate (HFBA) to produce the Si–VBC–g–P(HEMA)–g–P(HFBA) surface, and (v) the active P(HFBA) chain ends being used as the initiator for the subsequent ATRP of poly(ethylene glycol) monomethacrylate (PEGMA) to produce the amphiphilic Si–VBC–g–P(HEMA)–g–P(HFBA)–b–P(PEGMA) brush surface. The chemical composition and functionality of the silicon surface were characterised by X-ray photoelectron spectroscopy (XPS), atomic force microscope (AFM) and ellipsometry.

Redox Responsive Behavior of Thiol/Disulfide-Functionalized Star Polymers Synthesized via Atom Transfer Radical Polymerization

2010 ◽  
Vol 43 (9) ◽  
pp. 4133-4139 ◽  
Author(s):  
Jun Kamada ◽  
Kaloian Koynov ◽  
Cathrin Corten ◽  
Azhar Juhari ◽  
Jeong Ae Yoon ◽  
...  
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Star Polymers ◽  
Atom Transfer ◽  
Redox Responsive ◽  
Responsive Behavior
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