کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7595935 1492126 2014 29 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of chitosan/montmorillonite nanocomposites with encapsulated α-tocopherol
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Development of chitosan/montmorillonite nanocomposites with encapsulated α-tocopherol
چکیده انگلیسی
Nanocomposites of chitosan (CS) were developed and characterized in a full factorial design with varying levels of montmorillonite (MMTNa) and encapsulated tocopherol (toc-encap). The structural properties (XRD, FTIR), morphology (TEM), hygroscopic properties (water vapour permeability, hydrophobicity, sorption isotherms) and optical properties (haze, CIELab parameters) of the resulting materials were evaluated. Toc-encap contents up to 10% influenced the intercalation of MMTNa in the CS matrix, resulting in films with reduced water vapour permeability (3.48 × 10-11 (g/m s Pa)), increased hydrophobicity (ΔGHydroph |7.93-59.54| mJ m−2) and lower equilibrium moisture content (EMC), thus showing potential for active food packaging materials. At levels above 10%, toc-encap agglomerates occurred, which deteriorated the properties of the resulting films, as shown with the TEM. As the toc-encap content increased, the films became slightly more yellow, more irregular and less transparent, with a higher haze index.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 165, 15 December 2014, Pages 323-329
نویسندگان
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