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Biodegradable anionic poly(esteramide)s. Physico-mechanical properties

GH. RUSU1,* , E. RUSU1

Affiliation

  1. “Petru Poni” Institute of Macromolecular Chemistry, Romanian Academy, 41A Aleea Gr. Ghica Voda, Iasi 700487, Romania

Abstract

The poly(ester amide)s from є–caprolactam and є–caprolactone are semicrystalline materials. These types of PEAS possess partially bloky microstructure, with chains composed of –NH(CH2)5CO– (є–caprolactam) and –O(CH2)5CO– (є– caprolactone) groups. Each of the copolymers displayed a single melting point on DSC analysis. The degree of crystallinity and melting point of copolymers decreases with increasing є–caprolactone initial content. The notched impact strength values of the copolymer increases, while flexural modulus decreases with increasing є–caprolactone initial content. This suggests that the ester component in the copolymers act as plasticizer, reducing the degree of crystallinity of the copolymer and flexural modulus. The poly(esteramide)s were synthesized by using different monomer ratios CL/CLO: 100/0, 95/5, 90/10, 85/15, 80/20 and 75/25. The initial mold temperature (initial polymerization temperature) was kept constant at 160oC..

Keywords

Anionic ring–opening polymerization, Reactive rotational molding, Poly(є–caprolactam), Poly(є–caprolactone), Poly(esteramide)s.

Submitted at: Nov. 2, 2006
Accepted at: April 15, 2007

Citation

GH. RUSU, E. RUSU, Biodegradable anionic poly(esteramide)s. Physico-mechanical properties, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 4, pp. 958-964 (2007)