کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7215438 | 1469508 | 2015 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nanostructured biocomposites based on unsaturated polyester resin and a cellulose nanofiber network
ترجمه فارسی عنوان
بیومواسپید های نانوساختار بر اساس رزین پلی استر غیر اشباع و یک شبکه نانوفیلبر سلولز
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
چکیده انگلیسی
Biocomposites reinforced by natural plant fibers tend to be brittle, moisture sensitive and have limited strength. Wood cellulose nanofibers (CNF) were therefore used to reinforce an unsaturated polyester matrix (UP) without the need of coupling agents or CNF surface modification. The nanostructured CNF network reinforcement strongly improves modulus and strength of UP but also ductility and toughness. A template-based prepreg processing approach of industrial potential is adopted, which combines high CNF content (up to 45Â vol%) with nanoscale CNF dispersion. The CNF/UP composites are subjected to moisture sorption, dynamic thermal analysis, tensile tests at different humidities, fracture toughness tests and fractography. The glass transition temperature (Tg) increases substantially with CNF content. Modulus and strength of UP increase about 3 times at 45Â vol% CNF whereas ductility and apparent fracture toughness are doubled. Tensile properties at high humidity are compared with other biocomposites and interpreted based on differences in molecular interactions at the interface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 117, 29 September 2015, Pages 298-306
Journal: Composites Science and Technology - Volume 117, 29 September 2015, Pages 298-306
نویسندگان
Farhan Ansari, Mikael Skrifvars, Lars Berglund,