Preparation of biorenewable poly(γ-butyrolactone)-b-poly(l-lactide) diblock copolyesters via one-pot sequential metal-free ring-opening polymerization

2018 ◽  
Vol 9 (21) ◽  
pp. 2936-2941 ◽  
Author(s):  
Yong Shen ◽  
Jinbo Zhang ◽  
Na Zhao ◽  
Fusheng Liu ◽  
Zhibo Li
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
One Pot ◽  
Free Ring ◽  
Metal Free

Biorenewable block copolyesters were prepared from l-LA and non-polymerizable γBL via a one-pot strategy.

Phosphazene-Promoted Metal-Free Ring-Opening Polymerization of 1,2-Epoxybutane Initiated by Secondary Amides

2015 ◽  
Vol 48 (21) ◽  
pp. 7755-7764 ◽  
Author(s):  
Laetitia Dentzer ◽  
Caroline Bray ◽  
Sylvie Noinville ◽  
Nicolas Illy ◽  
Philippe Guégan
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Free Ring ◽  
Metal Free ◽  
Secondary Amides

Metal-Free Ring-Opening Polymerization of Glycidyl Phenyl Ether by Tetrabutylammonium Fluoride

2007 ◽  
Vol 40 (16) ◽  
pp. 6014-6016 ◽  
Author(s):  
Hisatoyo Morinaga ◽  
Bungo Ochiai ◽  
Takeshi Endo
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Phenyl Ether ◽  
Free Ring ◽  
Metal Free ◽  
Tetrabutylammonium Fluoride

Phosphazene-catalyzed ring-opening polymerization of ε-caprolactone: influence of solvents and initiators

2014 ◽  
Vol 5 (18) ◽  
pp. 5471-5478 ◽  
Author(s):  
Haleema Alamri ◽  
Junpeng Zhao ◽  
David Pahovnik ◽  
Nikos Hadjichristidis
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Polymerization Rate ◽  
Base Catalyst ◽  
Free Ring ◽  
Metal Free ◽  
And Control ◽  
Influence Of Solvents

Metal-free ring-opening polymerization of ε-caprolactone was conducted using a relatively mild phosphazene base catalyst. The influence of solvents and protic initiators on the polymerization rate and control was demonstrated.

scholarly journals One-Pot Synthesis of Star Copolymers by the Combination of Metal-Free ATRP and ROP Processes

Polymers ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1577 ◽  
Author(s):  
Gorkem Yilmaz
Keyword(s):  
Visible Light Irradiation ◽  
Ring Opening ◽  
Reaction Medium ◽  
Ring Opening Polymerization ◽  
One Pot ◽  
Metal Free ◽  
Molecular Weights ◽  
Star Copolymers ◽  
Living Polymerizations ◽  
Chromatographic Evidence

A completely metal-free strategy is demonstrated for the preparation of star copolymers by combining atom transfer radical polymerization (ATRP) and ring-opening polymerization (ROP) for the syntheses of block copolymers. These two different metal-free controlled/living polymerizations are simultaneously realized in one reaction medium in an orthogonal manner. For this purpose, a specific core with functional groups capable of initiating both polymerization types is synthesized. Next, vinyl and lactone monomers are simultaneously polymerized under visible light irradiation using specific catalysts. Spectral and chromatographic evidence demonstrates the success of the strategy as star copolymers are synthesized with controlled molecular weights and narrow distributions.

Integration of metal-free ring-opening metathesis polymerization and organocatalyzed ring-opening polymerization through a bifunctional initiator

2019 ◽  
Vol 10 (23) ◽  
pp. 2975-2979 ◽  
Author(s):  
Pengtao Lu ◽  
Andrew J. Boydston
Keyword(s):  
Block Copolymers ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Ring Opening Metathesis Polymerization ◽  
Free Ring ◽  
Metathesis Polymerization ◽  
Metal Free

We demonstrate the first integration of metal-free ROMP and organocatalyzed ROP to provide entirely metal-free syntheses of block copolymers.

Phosphazene-Promoted Metal-Free Ring-Opening Polymerization of Ethylene Oxide Initiated by Carboxylic Acid

2014 ◽  
Vol 47 (5) ◽  
pp. 1693-1698 ◽  
Author(s):  
Junpeng Zhao ◽  
David Pahovnik ◽  
Yves Gnanou ◽  
Nikos Hadjichristidis
Keyword(s):  
Carboxylic Acid ◽  
Ethylene Oxide ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Free Ring ◽  
Metal Free

Guanidine-based polycarbonate hydrogels: from metal-free ring-opening polymerization to reversible self-assembling properties

Soft Matter ◽  
2011 ◽  
Vol 7 (20) ◽  
pp. 9628 ◽  
Author(s):  
Christophe Bartolini ◽  
Laetitia Mespouille ◽  
Ingrid Verbruggen ◽  
Rudolph Willem ◽  
Philippe Dubois
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Free Ring ◽  
Metal Free ◽  
Self Assembling
Sign in / Sign up

Export Citation Format

Share Document