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Zinc acetate as a catalyst for the bulk ring opening polymerization of cyclic esters and lactide

✍ Scribed by Ravikumar R. Gowda; Debashis Chakraborty

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 366 KB
Volume: 333
Category: Article
ISSN: 1381-1169
DOI: 10.1016/j.molcata.2010.10.013

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✦ Synopsis

Zn(OAc) 2 •2H 2 O is found to be an effective bulk polymerization catalyst for the ring-opening polymerization of rac-lactide, l-lactide, -caprolactone and ␦-valerolactone. The propensity of polymerizations can be enhanced by performing them in the presence of appropriate amounts of different alcohols. The major initiation pathway in the polymerization is found to proceed via the activated monomer mechanism and depending on the nature of the alcohol used, polymers with different end groups can be synthesized. These polymerization system constitutes an economical process, employing readily available inorganics such as Zn(OAc) 2 •2H 2 O as catalyst and do not necessitate solvents. The overall system is green and eco friendly.

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