کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5439612 | 1509878 | 2017 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mesoporous guar galactomannan based biocomposite aerogels through enzymatic crosslinking
ترجمه فارسی عنوان
آئروژل های بیو کامپوزیتی مبتنی بر گواور گالوکتومانان با استفاده از آنزیم های متقاطع
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
Guar galactomannan (GM) was crosslinked using a sustainable enzymatic oxidation approach to form hydrogels. Nanofibrillated cellulose was used as reinforcement prior to crosslinking. Thirteen solvents were tested for replacing water in the gels, and the volumetric yields of hydrogels are discussed in relation to the solvents' Hansen solubility parameters. Ethanol and dimethyl sulfoxide (DMSO) were selected for further stepwise solvent exchange, to characterize the hydrogels' shrinkage in response to solvents at each step. DMSO displayed a good compatibility with GM-based hydrogels as compared to ethanol during stepwise solvent exchange, and the overall shrinkage value was similar with those two solvents after supercritical CO2 drying. The obtained aerogel exhibited highly porous composite structures with a large surface area (up to 333 m2/g) and good mechanical stiffness. Negligible ethanol residue was detected, which makes the aerogels safe materials for food and other life science applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part A: Applied Science and Manufacturing - Volume 94, March 2017, Pages 93-103
Journal: Composites Part A: Applied Science and Manufacturing - Volume 94, March 2017, Pages 93-103
نویسندگان
Abdul Ghafar, Pavel Gurikov, Raman Subrahmanyam, Kirsti Parikka, Maija Tenkanen, Irina Smirnova, Kirsi S. Mikkonen,