Single-Site Calcium Initiators for the Controlled Ring-Opening Polymerization of Lactides and Lactones

2003 ◽  
Vol 51 (3) ◽  
pp. 175-182 ◽  
Author(s):  
Zhiyuan Zhong ◽  
Stefan Schneiderbauer ◽  
Pieter J. Dijkstra ◽  
Matthias Westerhausen ◽  
Jan Feijen
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Single Site

Single site catalysts for stereoselective ring-opening polymerization of lactides

2011 ◽  
Vol 2 (3) ◽  
pp. 520-527 ◽  
Author(s):  
Pieter Jelle Dijkstra ◽  
Hongzhi Du ◽  
Jan Feijen
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Single Site ◽  
Single Site Catalysts

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.

Single-Site Catalysts for Ring-Opening Polymerization:  Synthesis of Heterotactic Poly(lactic acid) fromrac-Lactide

1999 ◽  
Vol 121 (49) ◽  
pp. 11583-11584 ◽  
Author(s):  
Ming Cheng ◽  
Athula B. Attygalle ◽  
Emil B. Lobkovsky ◽  
Geoffrey W. Coates
Keyword(s):  
Lactic Acid ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Single Site ◽  
Poly Lactic Acid ◽  
Single Site Catalysts
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