Biopolyester-based systems containing naturally occurring compounds with enhanced thermo-oxidative stability

Arrigo, Rossella; Morici, Elisabetta; Dintcheva, Nadka Tzankova

doi:10.5301/jabfm.5000322

Biopolyester-based systems containing naturally occurring compounds with enhanced thermo-oxidative stability

Abstract

Background

This work presents a sustainable approach for the stabilization of polylactic acid (PLA) against thermo-oxidative aging.

Methods

Naturally occurring phenolic and polyphenolic compounds, such as ferulic acid (FerAc), vanillic acid (VanAc), quercetin (Querc) and vitamin E (VitE), were introduced into PLA.

Results

The preliminary characterization of the systems formulated containing different amounts of natural stabilizers showed that all compounds used acted as plasticizers, leading to a decrease in rheological functions with respect to neat PLA, without significantly modifying the crystallinity of the raw material. The study of the thermo-oxidative behavior of neat PLA and PLA/natural compound systems, performed by spectrometric and thermal analyses, indicated that all stabilizers considered were able to exert a remarkable antioxidant action against thermo-oxidative phenomena.

Conclusions

All natural compounds considered are thus proposed as ecofriendly stabilizers, to get fully bio-based polymer systems with enhanced thermo-oxidative stability, suitable for biomedical applications.

J Appl Biomater Funct Mater 2016; 14(4): e455 - e462

Article Type: ORIGINAL RESEARCH ARTICLE

DOI:10.5301/jabfm.5000322

Authors

Rossella Arrigo, Elisabetta Morici, Nadka Tzankova Dintcheva

Article History

• Accepted on 14/06/2016
• Available online on 01/10/2016
• Published online on 02/11/2016

Disclosures

Financial support: No grants or funding have been received for this study.

Conflict of interest: None of the authors has any financial interest related to this study to disclose.

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Authors

Arrigo, Rossella [PubMed] [Google Scholar]
Morici, Elisabetta [PubMed] [Google Scholar]
Dintcheva, Nadka Tzankova [PubMed] [Google Scholar] , * Corresponding Author ([email protected])

Affiliations

Department of Civil, Environmental, Aerospace, Materials Engineering, University of Palermo, Palermo - Italy

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