Journal
POLYMER DEGRADATION AND STABILITY
Volume 90, Issue 2, Pages 313-318Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2005.04.048
Keywords
acetyl tributyl citrate; DSC; dynamic TG; poly(3-hydroxybutyrate); thermal degradation
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The effects of acetyl tributyl citrate (ATBC) as a biodegradable plasticizer on the thermal stability of poly(3-hydroxybutyrate) (PHB) were studied by differential scanning calorimetry (DSC and by thermogravimetric (TG) methods under dynamic conditions. The amounts of ATBC varied from 10 wt.% to 30 wt.% relative to PHB. The thermal degradation of pure and plasticized PHB samples was investigated by DSC as a function of annealing temperature, annealing time and cooling rate after thermal treatment. Important thermal parameters, including the melting temperature, the melting enthalpy, degree of crystallinity, initial degradation temperatures (expressed as the onset temperature, the temperature for 1% and 5% of conversion and the temperature at the maximum degradation rate) were determined. (c) 2005 Elsevier Ltd. All rights reserved.
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