1. Blending poly(3-hydroxybutyrate) with tannic acid: Influence of a polyphenolic natural additive on the rheological and thermal behavior
- Author
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Pierfrancesco Cerruti, Mario Malinconico, Nino Grizzuti, Maria Auriemma, Amodio Piscitelli, Rossana Pasquino, Maria, Auriemma, Amodio, Piscitelli, Pasquino, Rossana, Pierfrancesco, Cerruti, Mario, Malinconico, and Grizzuti, Nino
- Subjects
chemistry.chemical_classification ,Tannic acid ,Materials science ,Polymers and Plastics ,Organic Chemistry ,General Physics and Astronomy ,Calorimetry ,Polymer ,Natural and biodegradable polymers ,Biodegradable polymer ,Poly-3-hydroxybutyrateProcessing stability, Rheology, Tannic acid, Biodegradable polymers ,chemistry.chemical_compound ,chemistry ,Rheology ,Polyphenol ,Thermal and processing stability ,Materials Chemistry ,Organic chemistry ,Rheological properties ,Thermal stability ,Poly(3-hydroxybutyrate) ,Stabilizer (chemistry) - Abstract
Poly(3-hydroxybutyrate) (PHB) is a biodegradable polymer, whose applicability is limited by its relatively poor mechanical properties and narrow processing window. In this paper, a natural polyphenolic additive, tannic acid (TA) was used as thermal and processing stabilizer for PHB. The thermal stability of both neat and TA-doped PHB samples was studied by rheology and calorimetry. The experimental results show that the neat PHB massively degrades and that the addition of tannic acid enhances the thermal stability of PHB, thus widening the processing window of the polymer. Physical and chemical interactions between the polymer and the additive were considered as key factors to interpret the experimental data. The described results are of interest for the development of sustainable alternatives to synthetic polymer additives, by increasing the applicability of bio-based materials. (C) 2014 Elsevier Ltd. All rights reserved.
- Published
- 2015
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