تولید فیلم های زیست تخریب پذیر بر پایه نشاسته و نانو ذرّه دی اکسید تیتانیوم: بررسی خصوصیات فیزیکی و شیمیایی

نوع مقاله: مقاله پژوهشی

نویسندگان

1 واحد تحقیق و توسعه گروه صنعتی طب پلاستیک نوین

2 دانشگاه زنجان، دانشکده صنایع غذایی

چکیده

در این پژوهش، فیلم­ های زیست تخریب­ پذیر بر پایه نشاستهبه عنوان بسته ­بندی زیست تخریب ­پذیر به روش قالب ­گیری محلول ساخته شد.اثر افزودن نانو ذرّات دی­اکسید تیتانیوم (در سه سطح 1، 3 و 5 درصد) روی فیلم­های تهیه شده از بیوپلیمر نشاسته مورد ارزیابی قرار گرفت. ویژگی­ های سطحی، خواص فیزیکی، نفوذ­پذیری به بخار آب، خواص مکانیکی و ویژگی­ های ریز ساختار نمونه ­ها مورد بررسی قرار گرفتند. نتایج نشان داد افزودن نانو ذرّات دی­اکسید تیتانیوم، خواص وابسته به آب (نفوذ­پذیری به بخار آب، حلالیت و جذب آب) فیلم نشاسته را کاهش می­ دهد. نانو ذرّات دی­اکسید تیتانیوم باعث کاهش مقاومت کششی و افزایش کشش­پذیری فیلم­ ها می ­شوند. مشاهدات میکروسکوپ الکترونی روبشی نشان داد که اکثر خواص فیزیکی فیلم­ ها در ارتباط با ریزساختار آنها می­باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Preparation of Biodegradable Film by Starch/TiO2 Bio-Nanocomposite: Physicochemical Characterization

نویسندگان [English]

  • Tohid abdolahzadeh 1
  • Vahid Goudarzi 2
1 Teb plastic industrial group, R&D department (Ph.D. Student in Polymer Engineering, Iran Polymer and Petrochemical Institute)
2 Master of food industry engineering, Food industry department, Zanjan university
چکیده [English]

In this study, biodegradable starch-based films were made as biodegradable packaging by solution molding method. The effect of addition of titanium dioxide nanoparticles (at three levels of 1, 3 and 5 wt. %) on the films prepared from starch biopolymer was evaluated. Surface properties, physical properties, water vapor permeability, mechanical properties and microstructure characteristics of the samples were investigated. The results showed that the addition of titanium dioxide nanoparticles reduced the water-dependent properties (water vapor permeability, solubility and water absorption) of the starch film. Titanium dioxide nanoparticles reduce the tensile strength and increase the elongation of the films. Scanning electron microscope observations showed that most of the physical properties of the films were related to their microstructure.

کلیدواژه‌ها [English]

  • Starch
  • film
  • Titanium Dioxide Nano Particles
  • Biodegradable
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