Block copolymer synthesis in one shot: concurrent metal-free ATRP and ROP processes under sunlight

2017 ◽  
Vol 8 (19) ◽  
pp. 2899-2903 ◽  
Author(s):  
Cansu Aydogan ◽  
Ceren Kutahya ◽  
Andrit Allushi ◽  
Gorkem Yilmaz ◽  
Yusuf Yagci
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Atom Transfer ◽  
Metal Free

A completely metal-free strategy was developed by combining Atom Transfer Radical Polymerization (ATRP) and Ring Opening Polymerization (ROP) for the syntheses of block copolymers.

Novel Chemoenzymatic Synthesis of Triblock Copolymer

2011 ◽  
Vol 396-398 ◽  
pp. 2459-2462
Author(s):  
Xiao Tian Liu ◽  
Hong Bo Fan
Keyword(s):  
Block Copolymer ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Ring Opening ◽  
Triblock Copolymer ◽  
Sebacic Acid ◽  
Ring Opening Polymerization ◽  
Chemoenzymatic Synthesis ◽  
Atom Transfer ◽  
Novozyme 435

Enzymatic polycondensation of benzyl-2,2-bis(methylol) propionate and sebacic acid has been performed using lipase Novozyme-435 as the catalyst, subsequently enzymatic ring-opening polymerization was reacted by adding ε-caprolactone as the monomer in the same system. Then atom transfer radical polymerization (ATRP) from the macroinitiator combining α-bromoester of styrene was catalyzed by CuCl/2,2’-Dipyridyl to obtain the block copolymer successfully. The polymers obtained in different conditions were analyzed by 1HNMR and GPC.

Synthesis of PCL-PS Star-Block Copolymer by Combination of Lipase-Catalyzed Ring-Opening Polymerization and ATRP

2006 ◽  
Vol 11-12 ◽  
pp. 749-752 ◽  
Author(s):  
Rui Xue Liu ◽  
Yan Shi ◽  
Zhi Feng Fu
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
1H Nmr ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Star Block Copolymer ◽  
Star Block Copolymers

Poly(ε-caprolactone) (PCL)-polystyrene (PS)star-block copolymer with a cross-linked microgel core were synthesized by the combination of atom transfer radical polymerization (ATRP) of St and lipase-catalyzed ring-opening polymerization (ROP) of ε-CL. The characterization of PCL-Br, PCL-PS-Br macroinitiator and PCL-PS Star-block copolymers was detected by GPC and 1H NMR. Results showed that the target star-block copolymers were successfully prepared.

One-step synthesis of poly(methacrylate)-b-polyester via “one organocatalyst, two polymerizations”

2021 ◽  
Author(s):  
Mengmeng Li ◽  
Lin Zhou ◽  
Ziqi Zhang ◽  
Qi Wang ◽  
Jiani Gao ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Methyl Methacrylate ◽  
Ambient Temperature ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Atom Transfer ◽  
Trimethylene Carbonate ◽  
One Step

By using triarylsulfonium hexafluorophosphate salt as an organocatalyst for both photo-controlled atom transfer radical polymerization (photo-ATRP) and ring-opening polymerization (ROP) at ambient temperature, well-defined poly(methyl methacrylate)-b-poly(trimethylene carbonate) block copolymer was...

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