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Mechanical relaxation of glassy gelatin films

عنوان مقاله: Mechanical relaxation of glassy gelatin films
شناسه (COI) مقاله: NCFOODI18_027
منتشر شده در هجدهمین کنگره ملی صنایع غذایی در سال 1387
مشخصات نویسندگان مقاله:

F. Badii - Assistant professor, Agricultural Engineering Research Institute, Karaj, POBox: ۳۱۵۸۵-۸۴۵

خلاصه مقاله:
The structural relaxation during the ageing of glassy gelatin films containing 8, 12 and 17 % water at 25°C was studied through the changes in storage modulus (E’) measured isothermally in bending mode at different frequencies using DynamicMechanical Thermal Analysis (DMTA). The E’ increased with increasing ageing time (ta) and measurement frequency. Forall the water contents, the rates of ageing were extracted though time - ageing time superposition of E’ data. The rate andextent of ageing increased with water content.

کلمات کلیدی:
gelatin, mechanical relaxation, time - ageing time superposition, physical ageing, storage modulus

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