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- Title
Thermal analysis of soil-buried oxo-biodegradable polyethylene based blends.
- Authors
Martelli, Sílvia Maria; Fernandes, Elizabeth Grillo; Chiellini, Emo
- Abstract
Low-density polyethylene (LDPE) blended with poly(3-hydroxybutyrate) (PHB) and additivated with pro-oxidant were soil buried for 180 days and characterized using thermogravimetry (TG) and differential scanning calorimetry (DSC). TG data showed that both onset and maximum rate degradation temperatures decreased as a function of biodegradation time. Apparent activation energies ( Ea) using the Broido integral method decreased with the burial time increasing. PE crystallinity degree values increased in general up to 2 months of biodegradation. At the end of the soil burial (SB) test these values decreased principally for samples that were previously thermo-oxidized in an oven.
- Subjects
THERMAL analysis; LOW density polyethylene; POLY-beta-hydroxybutyrate; THERMOGRAVIMETRY; CALORIMETRY
- Publication
Journal of Thermal Analysis & Calorimetry, 2009, Vol 97, Issue 3, p853
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1007/s10973-009-0355-2