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بررسی ویژگی‌های فیزیکی و مکانیکی فیلم نانوکامپوزیت ایزوله پروتئین سویا- کتیرا- نانوسلولز | ||
| مهندسی بیوسیستم ایران | ||
| مقاله 5، دوره 47، شماره 3، آبان 1395، صفحه 431-439 اصل مقاله (884.6 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijbse.2016.59349 | ||
| نویسندگان | ||
| حمیده سپردار1؛ ابراهیم رحیمی2؛ ایمان شهابی قهفرخی* 3 | ||
| 1دانش آموخته کارشناسی ارشد علوم و صنایع غذایی،گروه علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه آزاد اسلامی واحد شهرکرد | ||
| 2دانشیار، گروه علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه آزاداسلامی واحد شهرکرد | ||
| 3استادیار گروه علوم و صنایع غذایی-دانشگاه زنجان | ||
| چکیده | ||
| در چند دهه گذشته آلودگیهای زیست محیطی ناشی از مواد بستهبندی پلاستیکی و محدودیت منابع نفتی و قیمت بالای نفت باعث جلب توجه محققین برای تولید بستهبندیهای زیست تخریب شده است. خواص مکانیکی ضعیف و نفوذپذیری بالای پلیمرهای زیست تخریب پذیر نسبت به بخار آب دو عیب اصلی آنها محسوب میشوند. نانو فناوری یکی از روشهای اصلاحی در این زمینه است. در این تحقیق، اثرافزودن نانوفیبرسلولز به عنوان پرکننده در سه سطح 1%، 3%، 5%(wt) ، بر روی حلالیت درآب، محتوای رطوبت، نفوذپذیری نسبت به بخار آب، مقاومت کششی، ازدیاد طول تا نقطه شکست، رنگ و خصوصیات ساختاری بیوپلیمر کامپوزیت از ایزولهپروتئینسویا و کتیرا مورد بررسی قرار گرفت. نتایج نشان داد افزودن نانوسلولز به بیوپلیمر ایزولهپروتئینسویا-کتیرا موجب تقویت خصوصیات کاربردی این بیونانوکامپوزیت میشود. در نمونه حاوی 0% نانوسلولز بیشترین و در نمونه حاوی 3% نانوسلولز کمترین اندیس زردی و تغییر رنگ مشاهده شد. با استفاده از تصاویر میکروسکوپ الکترونی روبشی خصوصیات بافتی نمونهها با افزایش میزان نانوسلولز مورد بررسی قرار گرفت. | ||
| کلیدواژه‌ها | ||
| ایزولهپروتئینسویا؛ کتیرا؛ نانوسلولز؛ خصوصیات مکانیکی و فیزیکی؛ نانوکامپوزیت | ||
| عنوان مقاله [English] | ||
| Investigation of mechanical and physical properties of soy protein isolate - tragacanth-nanocellulose based nanocomposite film | ||
| نویسندگان [English] | ||
| Hamideh Separdar1؛ Ebrahim Rahimi2؛ Iman Shahabi-Ghahfarrokhi3 | ||
| 1M.Sc. Department of Food Science and Technology, Faculty of Agriculture, Islamic Azad University, Shahrekord Branch | ||
| 2Associate Professor, Department of Food Science and Technology, Faculty of Agriculture, Islamic Azad University, Shahrekord Branch | ||
| 3Assistant Professor | ||
| چکیده [English] | ||
| In the past decades, environmental pollution caused by plastic packing materials, restrictions of petroleum resources and their high price attracted many researchers to produce biodegradable packaging materials. Poor mechanic properties and high water vapor permeability are two main defects of biodegradable polymers. Nanotechnology is a modification method in this case. In the current study, the effects of nanocellulose (NC) as a nano filler on the functional properties (i.e. solubility in water (SW), moisture content (MC), water vapor permeability (WVP), tensile strength (TS), elongation to break (EB), color and structural properties) of soy protein isolate-tragacanth gum (SPI-TG) were investigated. The results showed, the functional properties of SPI-TG-NC were improved. The highest yellowness index and total color difference was observed in SPI:TG (4.7:0.3), The lowest yellowness index and total color difference was observed in SPI-TG-NC (3%). The microstructure of film specimens was investigated using scanning electron microscope. | ||
| کلیدواژه‌ها [English] | ||
| Soy protein isolate, Tragacanth Gum, Nanocellulose, Mechanical and physical properties, Nanocomposite | ||
| مراجع | ||
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