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International Journal of Polymer Science
Volume 2018, Article ID 5381582, 11 pages
https://doi.org/10.1155/2018/5381582
Research Article

Poly(delta-gluconolactone) and Poly(delta-gluconolactone-ε-caprolactone) from delta-Gluconolactone and ε-Caprolactone by Ring-Opening Polymerization

1College of Physical Science and Technology, Sichuan University, Chengdu 610064, China
2Testing & Analysis Center, Sichuan University, Chengdu 610064, China

Correspondence should be addressed to Yonggang Yan; moc.361.piv@gnaggnoy_nay

Received 15 October 2017; Accepted 9 December 2017; Published 6 February 2018

Academic Editor: Atsushi Sudo

Copyright © 2018 Ruijiang Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Poly(delta-gluconolactone) (PGL) and poly(delta-gluconolactone--caprolactone) (P(GL-CL)) were synthesized through ring-opening polymerization (ROP) and characterized by FT-IR, NMR, XRD, intrinsic viscosity, GPC, DSC, and TGA. The crystallinity of P(GL-CL) with various d-GL/CL ratios (d-GL/CL = 5 : 5, 4 : 6, 3 : 7, 2 : 8, and 1 : 9) was 12.09 to 59.78% while PGL was amorphous. Melting temperature () of these polymers was 49.8 to 62.0°C and decomposition temperature was 282 to 489°C depending on the d-GL/CL ratios. In addition, all these polymers were degradable and the degradation rates could be controlled by adjusting d-GL/CL ratios. These results indicated that PGL and P(GL-CL) might be promising novel absorbable materials.