سنتز نانو کامپوزیت کیتوزان- پلی آنیلین و بررسی ویژگی های ساختاری و زیستی و ضدباکتریایی آن

نوع مقاله : مقاله پژوهشی

نویسنده

دانش آموخته کارشناسی ارشدگروه علوم و صنایع غذایی، دانشکده کشاورزی مؤسسه غیر انتفاعی آفاق ارومیه

چکیده

هدف از این پژوهش بررسی تأثیر نانو پلیمر رسانای پلی­آنیلین بر خصوصیات ساختاری و عملکردی و زیستی بیو­کامپوزیت کیتوزان است. در این پژوهش از نانوذرّات رسانای پلی­آنیلین برای بهبود خصوصیات ساختاری کیتوزان استفاده شد که بدین منظور نانو کامپوزیت کیتوزان- پلی­آنیلین در ترکیب غلظت های مختلف پلی­آنیلین و زمان سنتز (۱-۶۰ دقیقه) با هدف تولید بسته‌بندی آنتی­باکتریال و زیست‌تخریب‌پذیر سنتز شده و نیز خصوصیات فیزیکی، ساختاری و عملکردی فیلم ­ها مورد بررسی قرار گرفتند. خصوصیات ساختاری با استفاده از روش طیف­ سنجی مادون قرمز و پراش اشعه ایکس و اندازه، شکل و مورفولوژی ذرّات سنتز شده با استفاده از روش میکروسکوپ پویش الکترونی بررسی شد. نتایج نشان دادند نانو ذرّات پلی­آنیلین سنتزشده در ماتریکس پلیمری کیتوزان کروی شکل و در ابعاد ۴۵-۵۰ نانومتر می­باشند. بررسی تأثیر پلی­آنیلین بر خصوصیات فیزیکی فیلم کیتوزان هم نشان داد که با افزایش غلظت پلی­آنیلین وزمان سنتز میزان حلالیت آبی، نفوذپذیری به بخارآب فیلم‌ها کاهش یافت.همچنین نانوکامپوزیت­های سنتز شده به دلیل کدر بودن،در غلظت بالای پلی­آنیلین می توانند در بسته­بندی مواد غذایی حساس به نور مورد استفاده قرار گیرند.

کلیدواژه‌ها


عنوان مقاله [English]

Synthesis of Chitosan-Poly Aniline Conducting Nano Composite and its Structural Physical Properties

نویسنده [English]

  • behzad mohammadi
MSc, Department of Food Science and Technology, Faculty of Agriculture, Institute of higher education Afagh, Orumieh, Iran
چکیده [English]

The aim of this study was to investigate the effect of polyaniline conductive nano-polymer on the structural, functional and biological properties of chitosan bio-composite. In this study, conductive polyaniline nanoparticles were used to improve the structural properties of chitosan. For this purpose, chitosan-polyaniline nanocomposite in combination of different concentrations of polyaniline and synthesis time (1-60 minutes) with the aim of producing antibacterial and biodegradable packaging was synthesized; also physical, structural, and functional properties of the films were investigated. Structural properties were investigated using infrared spectroscopy and X-ray diffraction and also the size, shape and morphology of the synthesized particles were studied using scanning electron microscopy (SEM). The results showed that the polyaniline nanoparticles synthesized in the chitosan polymer matrix are spherical in dimensions of 45-50 nm. The study of the effect of polyaniline on the physical properties of chitosan films also showed that with increasing the concentration of polyaniline and the synthesis time, the water solubility and water vapor permeability of the films decreased. Also, due to the fading of synthesized nanocomposites at high concentrations of poly-aniline, synthesized nanocomposites can be used in the packaging of light-sensitive foods.

کلیدواژه‌ها [English]

  • chitosan
  • Poly aniline
  • Conducting polymer
  • Biodegradability
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