Highly active and stereoselective zirconium and hafnium alkoxide initiators for solvent-free ring-opening polymerization of rac-lactide

2008 ◽  
pp. 1293 ◽  
Author(s):  
Amanda J. Chmura ◽  
Matthew G. Davidson ◽  
Catherine J. Frankis ◽  
Matthew D. Jones ◽  
Matthew D. Lunn
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Solvent Free ◽  
Free Ring ◽  
Highly Active

Coumarin salen-based zinc complex for solvent-free ring opening polymerization of ε-caprolactone

2017 ◽  
Vol 58 (10) ◽  
pp. 977-980 ◽  
Author(s):  
Nelson Nuñez-Dallos ◽  
Andrés F. Posada ◽  
John Hurtado
Keyword(s):  
Ring Opening ◽  
Zinc Complex ◽  
Ring Opening Polymerization ◽  
Solvent Free ◽  
Free Ring

Phosphoroamidate compounds of 1,1′-Bi-2-napthol: Synthesis, structural characterization and solvent-free ring-opening polymerization of ε-caprolactone and l-lactide

2011 ◽  
Vol 372 (1) ◽  
pp. 88-93 ◽  
Author(s):  
Ravikumar R. Gowda ◽  
Debashis Chakraborty ◽  
Venkatachalam Ramkumar
Keyword(s):  
Structural Characterization ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Solvent Free ◽  
Free Ring

Bis(imino)phenoxide complexes of zirconium: synthesis, structural characterization and solvent-free ring-opening polymerization of cyclic esters and lactides

2010 ◽  
Vol 39 (21) ◽  
pp. 5091 ◽  
Author(s):  
Tanmoy Kumar Saha ◽  
Bijja Rajashekhar ◽  
Ravikumar R. Gowda ◽  
Venkatachalam Ramkumar ◽  
Debashis Chakraborty
Keyword(s):  
Structural Characterization ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Solvent Free ◽  
Free Ring ◽  
Cyclic Esters ◽  
Imino Phenoxide

Concerning the ring-opening polymerization of lactide and cyclic esters by coordination metal catalysts

2010 ◽  
Vol 82 (8) ◽  
pp. 1647-1662 ◽  
Author(s):  
Malcolm H. Chisholm
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Solvent Free ◽  
Single Site ◽  
Active Group ◽  
Cyclic Esters ◽  
Highly Active ◽  
Group 2 ◽  
Single Site Catalysts ◽  
Competing Reactions

A summary of the reactions involved in the ring-opening polymerization (ROP) of lactide (LA) to give polylactides (PLAs) is presented along with competing reactions. Particular attention is given to the stereoselective polymerization of rac-LA to give heterotactic PLA and meso-LA to give syndiotactic PLA by aluminum Schiff-based catalysts and to the development of highly active group 2 metal single-site catalysts. Melt or solvent-free polymerization is also described along with reactions that lead exclusively to cyclic-polylactides.

Aryloxy and benzyloxy compounds of hafnium: Synthesis, structural characterization and studies on solvent-free ring-opening polymerization of ε-caprolactone and δ-valerolactone

Polymer ◽  
2010 ◽  
Vol 51 (21) ◽  
pp. 4750-4759 ◽  
Author(s):  
Ravikumar R. Gowda ◽  
Debashis Chakraborty ◽  
Venkatachalam Ramkumar
Keyword(s):  
Structural Characterization ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Solvent Free ◽  
Free Ring

Pyridyl-urea catalysts for the solvent-free ring-opening polymerization of lactones and trimethylene carbonate

2019 ◽  
Vol 121 ◽  
pp. 109293 ◽  
Author(s):  
Rui Feng ◽  
Suyun Jie ◽  
Pierre Braunstein ◽  
Bo-Geng Li
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Solvent Free ◽  
Trimethylene Carbonate ◽  
Free Ring

Solvent-free ring opening polymerization of ε-caprolactone and electrical properties of polycaprolactone blended BiFeO3 nanocomposites

RSC Advances ◽  
2015 ◽  
Vol 5 (54) ◽  
pp. 43897-43905 ◽  
Author(s):  
Somasundaram Saravanamoorthy ◽  
Muniyandi Muneeswaran ◽  
NambiVenkatesan Giridharan ◽  
Sivan Velmathi
Keyword(s):  
Electrical Properties ◽  
Ring Opening ◽  
Polymer Nanocomposite ◽  
Ring Opening Polymerization ◽  
Solvent Free ◽  
Two Phase ◽  
Free Ring ◽  
Casting Technique ◽  
Multiferroic Bifeo

A novel two-phase polymer nanocomposite comprising polycaprolactone (PCL) and nanocrystalline multiferroic BiFeO3 (BFO NPs) has been fabricated by a simple casting technique.

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