Abstract：
:Novel nano-biocomposite films based on poly (lactic acid) (PLA) were prepared by incorporating thymol, as the active additive, and modified montmorillonite (D43B) at two different concentrations. A complete thermal, structural, mechanical and functional characterization of all nano-biocomposites was carried out. Thermal stability was not significantly affected by the addition of thymol, but the incorporation of D43B improved mechanical properties and reduced the oxygen transmission rate by the formation of intercalated structures, as suggested by wide angle X-ray scattering patterns and transmission electron microscopy images. The addition of thymol decreased the PLA glass transition temperature, as the result of the polymer plasticization, and led to modification of the elastic modulus and elongation at break. Finally, the amount of thymol remaining in these formulations was determined by liquid chromatography (HPLC-UV) and the antioxidant activity by the DPPH spectroscopic method, suggesting that the formulated nano-biocomposites could be considered a promising antioxidant active packaging material.
journal_name
Food Chemjournal_title
Food chemistryauthors
Ramos M,Jiménez A,Peltzer M,Garrigós MCdoi
10.1016/j.foodchem.2014.04.026subject
Has Abstractpub_date
2014-11-01 00:00:00pages
149-55eissn
0308-8146issn
1873-7072pii
S0308-8146(14)00571-8journal_volume
162pub_type
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