Comparative behavior of polybutadiene and polynorbornene-based latices prepared by dispersion ring-opening metathesis polymerization with a poly(ethylene oxide) macromonomer

2004 ◽  
Vol 42 (11) ◽  
pp. 2705-2716 ◽  
Author(s):  
Abraham Chemtob ◽  
Valérie Héroguez ◽  
Yves Gnanou
Keyword(s):  
Ethylene Oxide ◽  
Ring Opening ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Synthesis, Characterization and Thermal Properties of Poly(ethylene oxide), PEO, Polymacromonomers via Anionic and Ring Opening Metathesis Polymerization

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 145 ◽  
Author(s):  
George Theodosopoulos ◽  
Christos Zisis ◽  
Georgios Charalambidis ◽  
Vasilis Nikolaou ◽  
Athanassios Coutsolelos ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Ethylene Oxide ◽  
Ring Opening ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

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.

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