Influence of poly (ethylene glycol) on the thermal, mechanical, morphological, physical-chemical and biodegradation properties of poly (3-hydroxybutyrate) |
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| Authors: | D.F. Parra J. Fusaro D.S. Rosa |
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| Affiliation: | a Chemical and Environmental Center (CQMA), Instituto de Pesquisas Energéticas e Nucleares (IPEN), Av. Lineu Prestes, 2242, Cidade Uiversitaria 05508-900, São Paulo, SP, Brazil
b Laboratório de Polímeros Biodegradáveis e Soluções Ambientais, Universidade São Francisco, Rua Alexandre Rodrigues Barbosa, no. 45, Centro, 13251-900, Itatiba, SP, Brazil |
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| Abstract: | Blends of poly (3-hydroxybutyrate) (PHB) with poly (ethylene glycol) (PEG), (PHB/PEG), in different proportions of 100/0, 98/2, 95/5, 90/10, 80/20 and 60/40 wt%, respectively, were investigated for their thermal properties (using differential scanning calorimetry and thermogravimetric analysis), tensile properties, water vapor transmission rate, enzymatic biodegradation (using light microscopy) and mass retention. The addition of plasticizer did not alter the thermal stability of the blends, although an increase in the PEG content reduced the tensile strength and increased the elongation at break of pure PHB. |
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| Keywords: | Poly (3-hydroxybutyrate) Plasticizers Mechanical and thermal properties Physical-chemical properties |
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