Efficient Diethylzinc-Gallic Acid and Diethylzinc-Gallic Acid Ester Catalytic Systems for the Ring-Opening Polymerization of rac-LactideReportar como inadecuado




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1

Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy and Division of Laboratory Medicine, Medical University of Warsaw, 1 Banacha St., Warsaw 02-097, Poland

2

Department of Organic Chemistry, Faculty of Materials Science and Design, Kazimierz Pulaski University of Technology and Humanities in Radom, Ul. Chrobrego 27, Radom 26-600, Poland



These authors contributed equally to this work.





*

Author to whom correspondence should be addressed.



Academic Editor: Derek J. McPhee

Abstract Polylactide PLA represents one of the most promising biomedical polymers due to its biodegradability, bioresorbability and good biocompatibility. This work highlights the synthesis and characterization of PLAs using novel diethylzinc-gallic acid ZnEt2-GAc and diethylzinc-propyl gallate ZnEt2-PGAc catalytic systems that are safe for human body. The results of the ring-opening polymerization ROP of rac-lactide rac-LA in the presence of zinc-based catalytic systems have shown that, depending on the reaction conditions -predominantly isotactic-, disyndiotactic or atactic PLA can be obtained. Therefore, the controlled and stereoselective ROP of rac-LA is discussed in detail in this paper. View Full-Text

Keywords: biomedical polymers; polylactide; ring-opening polymerization; zinc-based catalysts; gallic acid; propyl gallate biomedical polymers; polylactide; ring-opening polymerization; zinc-based catalysts; gallic acid; propyl gallate





Autor: Karolina Żółtowska 1,†, Urszula Piotrowska 1, Ewa Oledzka 1 and Marcin Sobczak 1,2,†,*

Fuente: http://mdpi.com/



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