بررسی تاثیر سه بار بازیافت بر خواص حرارتی و مکانیکی چندسازه حاصل از آرد چوب زبان گنجشک و پلی اتیلن بازیافتی جهت مصارف بسته‌بندی

نوع مقاله : مقاله علمی

نویسندگان
جعفر ابراهیم‌پور کاسمانی 1
احمد ثمریها 2
1 دانشیار، گروه چوب و کاغذ، واحد سوادکوه، دانشگاه آزاد اسلامی، سوادکوه، ایران
2 استادیار، گروه علوم مهندسی، دانشگاه ملی مهارت، تهران، ایران
10.22034/stme.2025.513808.1113
چکیده
این مقاله به بررسی تأثیر بازیافت بر خواص حرارتی و مکانیکی چندسازه‌های حاصل از ترکیب آرد چوب زبان‌گنجشک و پلی‌اتیلن بازیافتی می‌پردازد. با توجه به نگرانی‌های فزاینده در مورد آلودگی محیط زیست و ضرورت استفاده مجدد از مواد، این تحقیق به تحلیل اثرات بازیافت بر ویژگی‌های فیزیکی و عملکردی این چندسازه‌ها در کاربردهای بسته‌بندی می‌پردازد. نمونه‌ها با نسبت‌های مختلف آرد چوب و پلی‌اتیلن تهیه و خواص حرارتی مانند دمای انتقال شیشه و خواص مکانیکی ازجمله استحکام کششی و سختی آن‌ها اندازه‌گیری شد. نتایج نشان داد افزایش تعداد دفعات بازیافت، تأثیر منفی بر مقاومت و مدول کششی و خمشی و مقاومت به ضربه داشت و به ترتیب کاهش‌هایی برابر 9/21، 4/25، 3/30، 9/27 و 1/23 درصد را نشان داد. بااین‌حال، ثبات حرارتی در برابر تغییرات، تغییر قابل‌توجهی نداشت و میزان زغال باقی‌مانده به ترتیب برابر با 96/9، 36/9، 16/8 و 76/7 درصد بود. این مطالعه می‌تواند به توسعه مواد بسته‌بندی دوستدار محیط زیست کمک کند و فرصت‌های جدیدی برای استفاده از مواد بازیافتی در صنایع مختلف فراهم آورد. یافته‌های این تحقیق بر لزوم توجه به تعادل بین مزایای بازیافت و تأثیرات منفی آن بر خواص مکانیکی تأکید می‌کند و می‌تواند راهنمایی برای طراحی مواد بسته‌بندی پایدار در آینده باشد.
کلیدواژه‌ها
بازیافت
خواص حرارتی
پلی اتیلن بازیافتی
بسته بندی
موضوعات

عنوان مقاله English

Investigating the Impact of Three Recycling Cycles on the Thermal and Mechanical Properties of Composites Made from Aspen Wood Flour and Recycled Polyethylene for Packaging Applications

نویسندگان English

Jafar Ebrahimpour-Kasmani 1
Ahmad Samariha 2
1 Associate professor, Department of Wood and Paper, Sava.C., Islamic Azad University, Savadkooh, Iran
2 Assistant professor, Department of Engineering Sciences, Technical and Vocational University (TVU), Tehran, Iran
چکیده English

This article investigates the impact of recycling on the thermal and mechanical properties of composites made from ash wood flour and recycled polyethylene. Given the growing concerns about environmental pollution and the necessity of material reuse, this research analyzes the effects of recycling on the physical and functional characteristics of these composites in packaging applications. Samples were prepared with varying ratios of wood flour and polyethylene, and thermal properties such as glass transition temperature, along with mechanical properties including tensile strength and hardness, were measured. The results indicated that an increase in the number of recycling cycles negatively affected tensile strength, tensile and flexural elastic modulus, and impact resistance, showing reductions of 21.9%, 25.4%, 30.3%, 27.9%, and 23.1%, respectively. However, thermal stability remained relatively unchanged, with residual charcoal content measured at 9.96%, 9.36%, 8.16%, and 7.76%. This study could contribute to the development of environmentally friendly packaging materials and provide new opportunities for utilizing recycled materials in various industries. The findings underscore the need to balance the benefits of recycling with its negative impacts on mechanical properties, serving as a guide for designing sustainable packaging materials in the future.

کلیدواژه‌ها English

Recycling؛ Thermal Properties؛ Recycled Polyethylene
Packaging

اصل مقاله

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