کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
829156 1470336 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of carrageenan on properties of biodegradable thermoplastic cassava starch/low-density polyethylene composites reinforced by cotton fibers
ترجمه فارسی عنوان
اثر کاراگنان بر خواص کامپوزیت های پلی اتیلن ترموپلاستی کارسووای کامپوزیت ترموپلاستیک و کم چگال تقویت شده با الیاف پنبه
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی


• We prepared the TPCS/LDPE composites modified by carrageenan and/or cotton fibers.
• The IR O–H stretching peak of the modified composites shifts to lower wavenumber.
• Stress and Young’s modulus of the modified composites increase significantly.
• The modified composites degrade faster than the non-modified composite.

Applications of biodegradable thermoplastic starch (TPS) have been restricted due to its poor mechanical properties, limited processability and high water uptake. In order to improve properties and processability, thermoplastic cassava starch (TPCS) was compounded with low-density polyethylene (LDPE). The TPCS/LDPE blend was, then, modified by a natural gelling agent, i.e. carrageenan and natural fibers, i.e. cotton fibers. All composites were compounded and processed using an internal mixer and an injection molding machine, respectively. It was found that stress at maximum load and Young’s modulus of the TPCS/LDPE composites significantly increased by the addition of the carrageenan and/or the cotton fibers. The highest mechanical properties were obtained from the TPCS/LDPE composites modified by both the carrageenan and the cotton fibers. Percentage water absorption of all of the TPCS/LDPE composites was found to be similar. All modified composites were also degraded easier than the non-modified one. Furthermore, all the composites were analyzed using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and Scanning electron microscopy (SEM).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 61, September 2014, Pages 264–269
نویسندگان
, ,