Synthesis and characterization of dinuclear rare-earth complexes supported by amine-bridged bis(phenolate) ligands and their catalytic activity for the ring-opening polymerization of l-lactide

2016 ◽  
Vol 45 (26) ◽  
pp. 10807-10820 ◽  
Author(s):  
Yu-Lai Duan ◽  
Jia-Xuan He ◽  
Wei Wang ◽  
Jing-Jing Zhou ◽  
Yong Huang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Rare Earth ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Rare Earth Complexes ◽  
Synthesis And Characterization ◽  
Phenolate Ligands

Neutral rare-earth complexes [M2(L)2(THF)4] have been synthesized. Their activities toward the ring-opening polymerization of l-lactides will be presented.

Synthesis and characterization of rare-earth metal complexes supported by a new pentadentate Schiff base and their application in heteroselective polymerization of rac-lactide

2015 ◽  
Vol 5 (6) ◽  
pp. 3302-3312 ◽  
Author(s):  
Yu Cui ◽  
Weikai Gu ◽  
Yaorong Wang ◽  
Bei Zhao ◽  
Yingming Yao ◽  
...  
Keyword(s):  
Schiff Base ◽  
Rare Earth ◽  
Metal Complexes ◽  
Rare Earth Metal ◽  
Ring Opening ◽  
Earth Metal ◽  
Ring Opening Polymerization ◽  
Synthesis And Characterization ◽  
Rare Earth Metal Complexes

Both rare-earth metal salen aryloxides and amides can efficiently initiate the ring-opening polymerization of rac-lactide to give heterotactic-rich polylactides.

scholarly journals Synthesis and Characterization of Polyphosphazenes Modified with Hydroxyethyl Methacrylate and Lactic Acid

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Evelyn Carolina Martínez Ceballos ◽  
Ricardo Vera Graziano ◽  
Gonzalo Martínez Barrera ◽  
Oscar Olea Mejía
Keyword(s):  
Lactic Acid ◽  
Ring Opening ◽  
Room Temperature ◽  
Block Structure ◽  
Ring Opening Polymerization ◽  
Synthesis And Characterization ◽  
Poly Lactic Acid ◽  
Hydroxyethyl Methacrylate ◽  
H Nmr

Poly(dichlorophosphazene) was prepared by melt ring-opening polymerization of the hexachlorocyclotriphosphazene. Poly[bis(2-hydroxyethyl-methacrylate)-phosphazene] and poly[(2-hydroxyethyl-methacrylate)-graft-poly(lactic-acid)-phosphazene] were obtained by nucleophilic condensation reactions at different concentrations of the substituents. The properties of the synthesized copolymers were assessed by FTIR,1H-NMR and31P-NMR, thermal analysis (DSC-TGA), and electron microscopy (SEM). The copolymers have a block structure and show twoTg's below room temperature. They are stable up to a temperature of 100°C. The type of the substituents attached to the PZ backbone determines the morphology of the polymers.

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