Synthesis of AB2 3- and AB4 5-Miktoarm Star Copolymers Initiated from Dendritic Tri- and Penta-Functional Initiators by Combination of Ring-Opening Polymerization of?-Caprolactone and Nitroxide-Mediated Radical Polymerization of Styrene

2005 ◽  
Vol 206 (4) ◽  
pp. 504-512 ◽  
Author(s):  
Yozo Miura ◽  
Yumi Sakai ◽  
Keisuke Yamaoka
Keyword(s):  
Radical Polymerization ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Star Copolymers ◽  
Miktoarm Star ◽  
Functional Initiators

Synthesis of ABC Star-Shaped Copolymers via a Combination of Controlled Polymerization Techniques

2011 ◽  
Vol 311-313 ◽  
pp. 1161-1167
Author(s):  
Xiao Bing Wang ◽  
Peng Fu ◽  
Min Ying Liu ◽  
Jian Wei Zhang ◽  
Qing Xiang Zhao
Keyword(s):  
Ethylene Oxide ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Proton Nuclear Magnetic Resonance ◽  
Hydroxyl Group ◽  
Controlled Polymerization ◽  
Star Copolymers ◽  
Poly Ethylene Oxide ◽  
Miktoarm Star ◽  
Poly Ethylene

Two kinds of ABC-type miktoarm star copolymers, poly(α-methylstyrene)-poly(ethylene oxide)-poly(ethoxyethyl glycidylether) (PMS-PEO-PEEGE) and poly(α-methylstyrene)-poly(ethylene oxide)-polyglycidol (PMS-PEO-PG), were synthesized via a combination of anionic polymerization with ring-opening polymerization. Firstly, The poly(α-methyl styryl lithium) (PMS－Li+) was capped by EEGE to form the functionalized poly(α-methylstyrene) with both an active ω-hydroxyl group and an ω’-ethoxyethyl-protected hydroxyl group. Secondly, the PMS-b-PEO block copolymers, star(PMS-PEO-PEEGE) and star(PMS-PEO-PG) copolymers were obtained by the ring-opening polymerization of EO and EEGE via the variation of the functional end group, respectively. Finally, the ethoxyethyl group on the PEEGE arm was hydrolyzed. The obtained miktoarm star copolymers and intermediates were characterized by proton nuclear magnetic resonance (1H-NMR) and size exclusion chromatography (SEC).

Synthesis of binary-patterned brushes by combining atom transfer radical polymerization and ring-opening polymerization

e-Polymers ◽  
2013 ◽  
Vol 13 (1) ◽  
Author(s):  
Aurore Olivier ◽  
Franck Meyer ◽  
Jean-Marie Raquez ◽  
Philippe Dubois
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Ring Opening ◽  
Microcontact Printing ◽  
Gold Surface ◽  
Ring Opening Polymerization ◽  
Careful Study ◽  
Atom Transfer ◽  
Final Thickness ◽  
End Group

Abstract This paper report the synthesis of binary-patterned brushes, combining two distinctive surface initiated-polymerizations (SIP) on the basis of different propagating species: the SI Ring Opening Polymerization (ROP) of L-Lactide (LLA) and SI atom transfer radical polymerization (ATRP) of N,N’-dimethylaminoethyl methacrylate (DMAEMA) on gold surface. First of all, a careful study of surfaceinitiated ROP of L-Lactide from hydroxyl end-group of thiol monolayer on gold surface as catalyzed by metal-free catalyst was carried out. The PLLA brushes synthesis was evaluated using two types of thiol monolayer and revealed the influence of ROP initiator chain length on the final thickness of the PLLA film. Combining the soft lithographic technique, microcontact printing, and the liquid phase deposition, the deposition onto specific micro-domains of both initiators was performed. The growth of PDMAEMA brushes and PLLA brushes was conducted by successive ATRP and ROP.

scholarly journals Functional initiators for the ring‐opening polymerization of polyesters and polycarbonates: An overview

2020 ◽  
Vol 58 (14) ◽  
pp. 1911-1923 ◽  
Author(s):  
Hien Phan ◽  
Kristoffer Kortsen ◽  
Georgia Englezou ◽  
Benoit Couturaud ◽  
Alisyn J. Nedoma ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Functional Initiators
Sign in / Sign up

Export Citation Format

Share Document