مجله علوم و صنایع غذایی ایران

مجله علوم و صنایع غذایی ایران

تهیه فیلم زیست‌تخریب‌پذیر نانو ذرات اکسید روی-کربوکسی متیل سلولز- ژلاتین و ارزیابی ویژگی‌های فیزیکی و مکانیکی آن

نوع مقاله : پژوهشی اصیل

نویسندگان
1 1- دانشجوی دکتری، گروه مهندسی مکانیک بیوسیستم، دانشگاه تربیت مدرس
2 استاد، گروه مهندسی مکانیک بیوسیستم، دانشگاه تربیت مدرس
3 استاد، گروه صنایع غذایی، دانشگاه تربیت مدرس
4 استادیار، گروه علوم پلیمر، پژوهشگاه پلیمر و پتروشیمی ایران
10.48311/fsct.2026.83724.0
چکیده
در سال‌های اخیر به دلیل مخاطرات زیست‌محیطی بسته‌های موجود در بازار، تمایل به استفاده از پلیمرهای طبیعی و زیست‌تخریب‌پذیر در نگهداری محصول بسته‌بندی‌شده بیشتر شده است. در این تحقیق از ژلاتین و کربوکسی متیل سلولز برای تولید بسته بندی زیست تخریب پذیر استفاده شد. برای تقویت ویژگی‌های مکانیکی و ممانعت در برابر عوامل مخرب از قبیل گاز اکسیژن، دی‌اکسید کربن و رطوبت، به فیلم‌ها نانو ذرات اکسید روی (ZnO) در سطوح (1، 3 و 5 درصد) اضافه گردید و در نهایت خصوصیات فیزیکی و مکانیکی فیلم‌های تولیدی مورد ارزیابی قرار گرفت. نتایج نشان داد که استفاده از درصدهای متفاوت نانو ذرات اکسید روی بر خصوصیات مکانیکی و فیزیکی فیلم تأثیر گذاشت. همچنین مشاهده شد با افزایش مقدار  ZnO  مقاومت کششی نمونه‌ها افزایش و درصد افزایش طول کاهش یافت. فیلم‌های بدون ZnO فیلم‌های منعطفی بوده و بیش‌ترین مقادیر افزایش طول را ثبت نمودند و نمونه‌های 5% ZnO کمترین درصد افزایش طول را داشتند. بالاترین استحکام کششی مربوط به نمونه حاوی 5% ZnO (Mpa 93/35) و پایین‌ترین مقدار مربوط به نمونه بدون ZnO (Mpa 3/29) بود. هم‌چنین مشخص شد که با افزایش میزان ZnO در تیمارها میزان نفوذپذیری به بخارآب، اکسیژن و حلالیت به‌طور معناداری کاهش و میزان کدورت فیلم‌ها افزایش پیدا کرد.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Preparing biodegradable film of zinc oxide nanoparticles-carboxymethyl cellulose-gelatin and evaluation of its physical and mechanical properties

نویسندگان English

ابراهیم biabani agdam 1
Mohammad Hadi Khoshtaghaza 2
Mohammad Hossein Azizi 3
Mojgan Mirzataheri 4
1 Ph.D Student, Biosystems Engineering Department, Tarbiat Modares University
2 Professor, Biosystems Engineering Department, Tarbiat Modares University
3 Professor, Department of Food Science and Technology, Tarbiat Modares University
4 Assistant Professor, Faculty of Polymer Science, Iran Polymer and Petrochemical Institute
چکیده English

In recent years, due to environmental risks associated with packaging material in the market, there has been an increasing tendency towards using natural and biodegradable polymers in product packaging. In this research, gelatin and carboxymethyl cellulose were used to produce Biodegradable packaging. In order to improve the mechanical properties and prevent destructive factors such as oxygen, carbon dioxide, and moisture, zinc oxide nanoparticles (ZnO) were used in the films (1, 3, and 5%), and the physical and mechanical properties of the produced films were evaluated. The results showed that using of different percentages of zinc oxide nanoparticles affected the mechanical and physical properties of the film. It was observed that with the increase in ZnO amount, the tensile strength of the samples increased and the elongation percentage decreased. Films without ZnO were flexible films and recorded the highest elongation values, and 5% ZnO samples had the lowest elongation percentage. The highest tensile strength was related to the sample containing 5% ZnO (35.93 MPa), and the lowest value was related to the sample without ZnO (29.3 MPa). It was also found that by increasing the amount of ZnO in the treatments, the permeability to water vapour, oxygen, and solubility decreased significantly, and the opacity of the films increased. 

 
 

کلیدواژه‌ها English

packaging
tensile strength
permeability to water vapor and oxygen
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