Self-condensing vinyl polymerization of a switchable chain transfer monomer for facile synthesis of star-shaped block copolymers

2019 ◽  
Vol 474 ◽  
pp. 187-193 ◽  
Author(s):  
Yu Sudo ◽  
Ryuki Kawai ◽  
Yuta Nabae ◽  
Teruaki Hayakawa ◽  
Masa-aki Kakimoto
Keyword(s):  
Block Copolymers ◽  
Chain Transfer ◽  
Facile Synthesis ◽  
Vinyl Polymerization ◽  
Chain Transfer Monomer

Facile synthesis of highly branched poly(acrylonitrile-co-vinyl acetate)s with low viscosity and high thermal stability via radical aqueous solution polymerization

2014 ◽  
Vol 5 (10) ◽  
pp. 3326-3334 ◽  
Author(s):  
Wenyan Huang ◽  
Chang Liu ◽  
Hongjun Yang ◽  
Xiaoqiang Xue ◽  
Bibiao Jiang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Aqueous Solution ◽  
Chain Transfer ◽  
High Thermal Stability ◽  
Solution Polymerization ◽  
Facile Synthesis ◽  
Low Viscosity ◽  
Aqueous Solution Polymerization ◽  
Chain Transfer Monomer ◽  
Poly Acrylonitrile

Branched P(AN-co-VAc)s were obtained via radical polymerization using a new chain transfer monomer of 2-(3-mercaptopropionyloxy) ethyl methacrylate.

Facile Synthesis of Main-Chain Degradable Block Copolymers for Performance Enhanced Dismantlable Adhesion

2012 ◽  
Vol 4 (4) ◽  
pp. 2057-2064 ◽  
Author(s):  
Eriko Sato ◽  
Takashi Hagihara ◽  
Akikazu Matsumoto
Keyword(s):  
Block Copolymers ◽  
Main Chain ◽  
Facile Synthesis

Facile synthesis and catalytic activity of well-defined amphiphilic block copolymers based on N -vinylimidazolium

2013 ◽  
Vol 24 (12) ◽  
pp. 1089-1093 ◽  
Author(s):  
Chang Peng ◽  
Kai Huang ◽  
Mingsong Han ◽  
Wei Meng ◽  
Yuanqin Xiong ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Block Copolymers ◽  
Amphiphilic Block Copolymers ◽  
Facile Synthesis

scholarly journals Synthesis and Self-Assembly of Poly(N-Vinylcaprolactam)-b-Poly(ε-Caprolactone) Block Copolymers via the Combination of RAFT/MADIX and Ring-Opening Polymerizations

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1252
Author(s):  
Rodolfo M. Moraes ◽  
Layde T. Carvalho ◽  
Gizelda M. Alves ◽  
Simone F. Medeiros ◽  
Elodie Bourgeat-Lami ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Ring Opening ◽  
Chain Transfer ◽  
Fluorescence Probe ◽  
Size Exclusion ◽  
Proton Nuclear Magnetic Resonance ◽  
Solution Temperature ◽  
Copolymer Composition ◽  
Resonance Spectroscopy ◽  
Scanning Calorimetry

Well-defined amphiphilic, biocompatible and partially biodegradable, thermo-responsive poly(N-vinylcaprolactam)-b-poly(ε-caprolactone) (PNVCL-b-PCL) block copolymers were synthesized by combining reversible addition-fragmentation chain transfer (RAFT) and ring-opening polymerizations (ROP). Poly(N-vinylcaprolactam) containing xanthate and hydroxyl end groups (X–PNVCL–OH) was first synthesized by RAFT/macromolecular design by the interchange of xanthates (RAFT/MADIX) polymerization of NVCL mediated by a chain transfer agent containing a hydroxyl function. The xanthate-end group was then removed from PNVCL by a radical-induced process. Finally, the hydroxyl end-capped PNVCL homopolymer was used as a macroinitiator in the ROP of ε-caprolactone (ε-CL) to obtain PNVCL-b-PCL block copolymers. These (co)polymers were characterized by Size Exclusion Chromatography (SEC), Fourier-Transform Infrared spectroscopy (FTIR), Proton Nuclear Magnetic Resonance spectroscopy (1H NMR), UV–vis and Differential Scanning Calorimetry (DSC) measurements. The critical micelle concentration (CMC) of the block copolymers in aqueous solution measured by the fluorescence probe technique decreased with increasing the length of the hydrophobic block. However, dynamic light scattering (DLS) demonstrated that the size of the micelles increased with increasing the proportion of hydrophobic segments. The morphology observed by cryo-TEM demonstrated that the micelles have a pointed-oval-shape. UV–vis and DLS analyses showed that these block copolymers have a temperature-responsive behavior with a lower critical solution temperature (LCST) that could be tuned by varying the block copolymer composition.

Synthesis of amphiphilic block copolymers based on poly(dimethylsiloxane) via fragmentation chain transfer (RAFT) polymerization

Polymer ◽  
2004 ◽  
Vol 45 (13) ◽  
pp. 4383-4389 ◽  
Author(s):  
Tommy S.C Pai ◽  
Christopher Barner-Kowollik ◽  
Thomas P Davis ◽  
Martina H Stenzel
Keyword(s):  
Block Copolymers ◽  
Chain Transfer ◽  
Raft Polymerization ◽  
Amphiphilic Block Copolymers
Sign in / Sign up

Export Citation Format

Share Document