ارزیابی خصوصیات فیلم‌ دولایه آگار/ کازئینات سدیم حاوی نانوذرات اکسید روی

نوع مقاله: مقاله علمی - پژوهشی

نویسندگان

1 گروه اموزشی فراوری محصولات شیلاتی-دانشکده شیلات و محیط زیست-دانشگاه علوم کشاورزی ومنابع طبیعی گرگان. گرگان-ایران

2 گروه آموزشی فراوری محصولات شیلاتی- دانشکده شیلات و محیط زیست- دانشگاه علوم کشاورزی و منابع طبیعی گرگان. گرگان- ایران

چکیده

تحقیق حاضر به بررسی اثر افزودن نانواکسید روی بر خواص فیزیکی، مکانیکی و ظاهری فیلم‌های دولایه آگار/کازئینات سدیم پرداخته است. نانوذرات اکسید روی در غلظت‌های مختلف (5/0، 1 و 2 درصد وزنی) به ماتریس پلیمری کازئینات سدیم در فیلم دولایه افزوده شد. خواص مکانیکی، رطوبت و حلالیت، نفوذپذیری به بخار آب، درصد جذب‌آب، خواص رنگی و شفافیت فیلم‌ها مورد مطالعه قرار گرفت. نتایج نشان داد که افزودن 2 درصد اکسید روی به فیلم دولایه باعث کاهش بیش از 32 درصد نفوذپذیری نسبت به بخار آب در فیلم‌های تولیدی شد. نرخ جذب‌آب و میزان حلالیت نیز با افزایش مقدار اکسید روی کاهش یافت. مقاومت کششی فیلم دولایه با افزایش غلظت اکسید روی تا 2 درصد، از 05/26 مگاپاسکال به 48/41 مگاپاسکال افزایش یافت ولی ازدیاد طول در نقطه شکست با افزایش غلظت نانوذره تا 1 درصد، ‌روند افزایشی داشت. با افزایش غلظت نانوذرات اکسید روی به 2 درصد، خاصیت نفوذپذیری نور کاهش و کدورت فیلم‌های تولیدی افزایش یافت

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

The assessment of of bilayer agar- sodium caseinat film properties containing ZnO nanoparticles

نویسندگان [English]

  • zahra ghafoori ahangar 1
  • Parastoo Pourashouri 2
  • seyed mahdi ojagh 2
  • bahareh shabanpour 2

1 department of Seafood processing Fisheries Sciences-college of Fisheries and Environment Sciences- Gorgan University of Agricultural Sciences and Natural Resources. Gorgan-Iran

2 department of Seafood Processing Fisheries Sciences, College of Fisheries and Environment Sciences, Gorgan University of Agricultural Sciences and Natural Resources , gorgan, iran.

چکیده [English]

This study has investigated the effect of ZnO nanoparticle on physical, mechanical and optical properties of sodium caseinate/ agar bilayer film. The ZnO nanoparticles were added to the polymer matrix sodium caseinate in various concentrations (0.5, 1 and 2 wt.%) in a bilayer film. Mechanical properties, moisture and solubility, water vapor permeability (WVP), water absorption, color properties and transparency of films were studied. According to the results, addition of 2% ZnO to the bilayer film showed a 32% reduction of WVP in treatments than control. The water absorption rate and solubility were reduced in high percentage of ZnO. The tensile strength of a bilayer film also increased from 26.05 MPa to 41.48 MPa by increasing ZnO concentration up to 2%; but increasing the elongation showed significant increasing up to 1% nanoparticles. High amount of nanoparticles were reduced the permeability of light, and increased the opacity of the films.

کلیدواژه‌ها [English]

  • bilayer film
  • agar
  • sodium caseinate
  • nano zinc oxide
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