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.

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

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.

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

Fast, selective and metal-free ring-opening polymerization to synthesize polycarbonate/polyester copolymers with high incorporation of ethylene carbonate using an organocatalytic phosphazene base

2019 ◽  
Vol 10 (43) ◽  
pp. 5905-5912 ◽  
Author(s):  
Chuanzhi Wei ◽  
Xinhui Kou ◽  
Shaofeng Liu ◽  
Zhibo Li
Keyword(s):  
Ring Opening ◽  
Ethylene Carbonate ◽  
Ring Opening Polymerization ◽  
Free Ring ◽  
Metal Free ◽  
Selective Process ◽  
High Incorporation

Polycarbonate/polyester copolymers with high incorporation of EC were realized by a fast and selective process using a metal-free catalyst.

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