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Biodegradable Poly(3‐hydroxybutyrate) Nanocomposite
Author(s) -
Ohashi Eiji,
Drumond Walker Soares,
Zane Nicholas Picoli,
de Faria Barros Pedro Wang,
Lachtermacher Marly Grinapel,
Wiebeck Hélio,
Wang Shu Hui
Publication year - 2009
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200950521
Subject(s) - materials science , thermogravimetry , ultimate tensile strength , extrusion , polyethylene , nanocomposite , toughness , elongation , composite material , plastics extrusion , polymer , chemical engineering , engineering
This work seeks bringing a technological and social contribution by searching blends and composites of poly(3‐hydroxybutyrate) (PHB) and polyethylene widely used in packaging films, and colloidal silica. The mixtures were prepared by extrusion using a single‐screw extruder and were analyzed regarding their thermal and mechanical properties and morphology. The results have shown PHB toughness in the studied compositions, which elongation at break was in the range 5–80% compared to 2% for neat PHB. The small amount (0.2 to 0.4%) of added silica seemed to increase in 20% the tensile strength. The thermal degradation by thermogravimetry from room temperature to 800 °C revealed a mixed behavior for the composites between PHB and polyethylene.