Title
Improvement of Biodegradability and Biocompatibility of Electrospun Scaffolds of Poly(butylene terephthalate) by Incorporation of Sebacate Units
Date Issued
01 January 2020
Access level
open access
Resource Type
journal article
Author(s)
Universitat Politècnica de Catalunya
Publisher(s)
Polymer Society of Korea
Abstract
Incorporation of aliphatic units to poly(butylene terephthalate) (PBT) gives rise to biodegradable copolymers with tunable properties (e.g., degradability), depending on the selected comonomer and the specific composition. Specifically, a low molecular weight poly(butylene sebacate-co-terephthalate) (PBSeT) with a high ratio of aliphatic sebacate units (i.e., 70 mol-% with respect to the total dicarboxylate content) has been employed in this work to get new electrospun biodegradable scaffolds. Appropriate electrospinning conditions have been found despite the limited copolymer molecular weight. In addition, PBSeT has been employed to improve biocompatibility and biodegradability of scaffolds based on the PBT homopolymer. Scaffolds with different properties have been prepared following two strategies: Electrospinning of single solutions of PBT and PBSeT mixtures and co-electrospinning of independent PBT and PBSeT solutions. Characterization involved spectroscopic (FTIR, NMR), calorimetric (DSC, TGA) and surface hydrophobicity analyses. Hydrolytic and enzymatic degradation studies demonstrated the success of the approach due to the susceptibility of the PBSeT component towards the enzymatic attack with lipases from Pseudomonas cepacia and even towards high temperature hydrolysis. [Figure not available: see fulltext.]
Start page
23
End page
32
Volume
28
Issue
1
Language
English
OCDE Knowledge area
Ingeniería química
Subjects
Scopus EID
2-s2.0-85075143173
Source
Macromolecular Research
ISSN of the container
15985032
Sources of information:
Directorio de Producción Científica
Scopus