Anionic Ring Opening Polymerization of ϵ-Caprolactone Initiated by Lithium Silanolates
Angel J. Satti A B D , Augusto G. O. de Freitas C , M. Loreta Sena Marani B , Marcelo A. Villar B , Enrique M. Vallés B , Cristiano Giacomelli C and Andrés E. Ciolino B
+ Author Affiliations
- Author Affiliations
A Instituto de Química del Sur (INQUISUR), Departamento de Química, Universidad Nacional del Sur (UNS), Avenida Alem 1253, (8000) Bahía Blanca, Argentina.
B Planta Piloto de Ingeniería Química (PLAPIQUI), Departamento de Ingeniería Química, Universidad Nacional del Sur (UNS), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Camino ‘La Carrindanga’ Km. 7, (8000) Bahía Blanca, Argentina.
C Departamento de Química, Universidade Federal de Santa Maria (UFSM), 97105-900 Santa Maria-RS, Brazil.
D Corresponding author. Email: angel.satti@uns.edu.ar
Australian Journal of Chemistry 70(1) 106-112 https://doi.org/10.1071/CH16270
Submitted: 29 April 2016 Accepted: 14 June 2016 Published: 12 July 2016
Abstract
Ring-opening homo- and co-polymerization reactions of ϵ-caprolactone were performed by employing anionic polymerization (high vacuum techniques) and lithium silanolates (LS) as initiators. LS were obtained by reaction between hexamethyl(cyclotrisiloxane) and sec-Bu–Li+, or from living poly(dimethylsiloxanyl)lithium chains. The results indicated that LS are efficient initiators for the ring-opening polymerization of ϵ-caprolactone, providing the respective homogeneous polymers in good yields.
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