Imidazolium-Based Ionic Liquids as Initiators in Ring Opening Polymerization: Ionic Conduction and Dielectric Response of End-Functional Polycaprolactones and Their Block Copolymers

2016 ◽  
Vol 217 (11) ◽  
pp. 1270-1281 ◽  
Author(s):  
U Hyeok Choi ◽  
Anuj Mittal ◽  
Terry L. Price ◽  
Ralph H. Colby ◽  
Harry W. Gibson
Keyword(s):  
Ionic Liquids ◽  
Block Copolymers ◽  
Dielectric Response ◽  
Ring Opening ◽  
Ionic Conduction ◽  
Ring Opening Polymerization

Ring-opening polymerization of γ-benzyl-l-glutamate-N-carboxyanhydride in ionic liquids

Polymer ◽  
2007 ◽  
Vol 48 (20) ◽  
pp. 5867-5877 ◽  
Author(s):  
Hideharu Mori ◽  
Mizuki Iwata ◽  
Satoko Ito ◽  
Takeshi Endo
Keyword(s):  
Ionic Liquids ◽  
Ring Opening ◽  
Ring Opening Polymerization

Lipase-Catalyzed Ring-Opening Polymerization of L-Lactide in Hydrated Ionic Liquids

2013 ◽  
Vol 70 (10) ◽  
pp. 612-615 ◽  
Author(s):  
Masahiro YOSHIZAWA-FUJITA ◽  
Yu KAKEGAWARA ◽  
Yuko TAKEOKA ◽  
Masahiro RIKUKAWA
Keyword(s):  
Ionic Liquids ◽  
Ring Opening ◽  
Ring Opening Polymerization

Aluminum‐Catalyzed One‐Pot Synthesis of Polyester‐ b ‐Polypeptide Block Copolymers by Ring‐Opening Polymerization

2019 ◽  
Vol 220 (14) ◽  
pp. 1900040 ◽  
Author(s):  
Thibault E. Schmid ◽  
Carine Robert ◽  
Vincent Richard ◽  
Sumesh K. Raman ◽  
Vincent Guérineau ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
One Pot ◽  
One Pot Synthesis

Tailoring the degradation and mechanical properties of poly(ε-caprolactone) incorporating functional ε-caprolactone-based copolymers

2019 ◽  
Vol 10 (27) ◽  
pp. 3786-3796 ◽  
Author(s):  
Mi Xu ◽  
Cuili Guo ◽  
Haozhen Dou ◽  
Yi Zuo ◽  
Yawei Sun ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Block Copolymers ◽  
Ring Opening ◽  
Oxidative Degradation ◽  
Ring Opening Polymerization ◽  
Functional Block ◽  
Functional Block Copolymers

Functional block copolymers (COPs) were synthesized through the ring-opening polymerization, and the effects of COPs on the hydrolytic & oxidative degradation and mechanical properties of PCL/COP composites were studied.

Biodegradable copolymers based on poly(ethylene oxide), polylactide and polydepsipeptide sequences with functional groups

e-Polymers ◽  
2001 ◽  
Vol 1 (1) ◽  
Author(s):  
Yakai Feng ◽  
Doris Klee ◽  
Hartwig Höcker
Keyword(s):  
Block Copolymers ◽  
Ethylene Oxide ◽  
Aspartic Acid ◽  
Functional Groups ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Biodegradable Copolymers ◽  
Protective Groups ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

AbstractFor the purpose of increasing the hydrophilicity of polylactide, new block copolymers with protected functional groups, poly(lactide-co-(S)-b-benzyl aspartate)-poly(ethylene oxide)-poly(lactide-co-(S)- b-benzyl aspartate), were synthesized via ring-opening polymerization of D,L-lactide and (3S, 6R,S)-3- [(benzyloxycarbonyl)methyl]-6-methylmorpholine-2,5-dione in the presence of hydroxyltelechelic poly(ethylene oxide) (PEO) as an initiator at 140 °C for 24 h. The benzyl protective groups of the block copolymers were completely removed to give poly(lactide-co-(S)-aspartic acid)-PEO-poly(lactide-co-(S)-aspartic acid), (poly(DLLA-co-Asp)-b-PEO-b-poly(DLLA-co-Asp)). This shows lower crystallization and melting temperature compared with the polymers before deprotection. Poly(DLLA-co-Asp)-b-PEO-b-poly(DLLA-co-Asp) with 55.6 wt.-% of PEO is more hydrophilic, shows higher water absorption and is degraded faster than with 39.5 wt.-% of PEO.

Poly(ω-pentadecalactone)-b-poly(l-lactide) Block Copolymers via Organic-Catalyzed Ring Opening Polymerization and Potential Applications

2015 ◽  
Vol 4 (4) ◽  
pp. 408-411 ◽  
Author(s):  
Richard Todd ◽  
Sarah Tempelaar ◽  
Giada Lo Re ◽  
Stephen Spinella ◽  
Scott A. McCallum ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Potential Applications
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