کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5022318 | 1469482 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Self-healing green composites based on soy protein and microfibrillated cellulose
ترجمه فارسی عنوان
کامپوزیت های سبز خود درمان کننده بر پایه پروتئین سویا و سلولز میکرو فیبلیله شده
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کلمات کلیدی
کامپوزیت های سبز خود درمان کننده، میکرو کپسول، پروتئین سویا، سلولز میکرو فیبریلیه شده، کامپوزیت سبز،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
چکیده انگلیسی
Self-healing soy protein isolate-microfibrillated cellulose (MFC-SPI) composites that incorporated poly(d,l-lactide-co-glycolide) microcapsules containing SPI (SPI-PLGA-MCs) as the healing agent were developed. SPI-PLGA-MCs prepared using a green solvent, ethyl acetate, had a protein loading of over 50%. Self-healing MFC-SPI (10Â wt%) composites containing SPI-PLGA-MCs (15Â wt%) had Young's modulus of about 970Â MPa and strength of over 15Â MPa whereas neat SPI resin had Young's modulus of 326Â MPa and strength of about 8Â MPa. The significantly higher tensile properties of composites compared to neat SPI resin was due to the inherent high tensile properties of MFC and excellent hydrogen bonding with SPI resin. Self-healing mechanism, i.e., healing agent (SPI) bridging the fracture surfaces of the microcracks, was observed through SEM imaging. Composites with no SPI-PLGA-MCs showed no self-healing whereas self-healing SPI composites showed 27% healing efficiency after 24Â h healing. The self-healing efficiency was noticeably lower than 48% obtained earlier for self-healing SPI resin using the same SPI-PLGA-MCs. This was because the self-healing mechanism occurs only for the SPI resin component and not for the MFC fibrils. Self-healing of green composites can extend their useful life and make it easier for them to replace conventional composites derived from petroleum.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 143, 3 May 2017, Pages 22-30
Journal: Composites Science and Technology - Volume 143, 3 May 2017, Pages 22-30
نویسندگان
Joo Ran Kim, Anil N. Netravali,