مروری بر فوم های زیست تخریب پذیر مبتنی بر نشاسته و روش های اصلاح آن

نوع مقاله : ترویجی

نویسندگان

1 دانشجوی کارشناسی ارشد، زنجان، دانشگاه زنجان، دانشکده کشاورزی، گروه علوم و مهندسی صنایع غذایی

2 استادیار، زنجان، دانشگاه زنجان، دانشکده کشاورزی، گروه علوم و مهندسی صنایع غذایی

3 دانشجوی کارشناسی علوم و صنایع غذایی، دانشگاه زنجان، دانشکده کشاورزی، زنجان

چکیده

بسته‌بندی فوم دربرگیرنده انبارش بلند مدّت و محافظت از انواع مواد غذایی در برابر عوامل فیزیکی، شیمیایی و زیستی است. فوم های پلیمری به دلیل وزن بسیار سبک، تنوع بالا، با دوام بودن، مقاومت در برابر کپک زدگی و ظاهر مناسب برای بسیاری از کاربردها ایمن و قابل توصیه می ­باشد. این امر منجر به تولید و مصرف بالا این مواد شده است، و با توجّه به زیست تخریب پذیر نبودن این مواد، نگرانی های زیست محیطی زیادی را ایجاد کرده ­اند. بنابراین تلاش های چشمگیری برای توسعه جایگزین های سازگار با محیط زیست، به ویژه در مورد فوم های نشاسته صورت گرفته است. زیرا نشاسته یک پلیمر زیستی ارزان، در دسترس، فراوان، تجدید پذیر و زیست تخریب ­پذیر است. این خصوصیات نشاسته را به مهم ­ترین پلیمر زیستی برای توسعه فیلم‌های زیست تخریب ‌پذیر تبدیل کرده است، اما نشاسته به خودی خود نسبتاً ضعیف و حساس به آب است. برای بهبود خواص حرارتی، مکانیکی، قالب‌پذیری، نفوذ ناپذیری در برابر آب و دیگر خصوصیات فوم های مبتنی بر نشاسته، رویکردهای زیادی مانند: اصلاح شیمیایی نشاسته، ترکیب با پلیمرهای زیست تخریب پذیر مختلف، ترکیب با فیبرهای طبیعی و افزودن نانو فیلرها پیشنهاد شده است.

کلیدواژه‌ها

عنوان مقاله [English]

Biodegradable Starch Based Foam and its Modification Methods: A-Review

نویسندگان [English]

  • Masoomeh Mohammadi-Alamuti 1
  • Iman Shahabi-Ghahfarrokhi 2
  • Hadiseh Amin 3
1 M.Sc of Food Science and Engineering, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
2 Department of Food Science and Engineering, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
3 Undergraduate of Food Science and Engineering, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
چکیده [English]

Foam packaging involves long-term storage and protection of a variety of foods against physical, chemical and biological agents. Polymer foams are safe and recommended for many applications due to their very light weight, high versatility, durability, mold resistance and good appearance. This has led to high production and consumption of these materials, and due to the non-biodegradability of these materials, they have caused a lot of environmental concerns. Therefore, significant efforts have been made to develop environmentally friendly alternatives, especially in the case of starch foams. Because starch is a cheap, available, abundant, renewable and biodegradable biopolymer. These properties make starch the most important biopolymer for the development of biodegradable films, but the starch itself is relatively weak and water-sensitive. To improve the thermal and mechanical properties, moldability, water impermeability and other properties of starch-based foams, many approaches such as chemical modification of starch, combination with various biodegradable polymers, combination with natural fibers and the addition of nano-fillers are proposed.

کلیدواژه‌ها [English]

  • Starch
  • Foam
  • Biodegradable

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  • تاریخ دریافت: 01 شهریور 1399
  • تاریخ بازنگری: 31 شهریور 1399
  • تاریخ پذیرش: 01 دی 1399

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