کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7782592 | 1500565 | 2018 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Production of nanofibrillated cellulose with superior water redispersibility from lime residues via a chemical-free process
ترجمه فارسی عنوان
تولید سلولز نانوفیبریل شده با راندمان مجدد آب از محلول آهک از طریق فرآیند شیمیایی آزاد
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کلمات کلیدی
تجمع، اتوکلاو خشک کردن، نانوفیبری، یکسان سازی، دارایی ویسکولاستیک،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
Water removal during drying of nanofibrillated cellulose (NFC) generally results in the formation of hydrogen bonds between fibers, leading to irreversible fiber agglomeration and hence their poor water redispersibility. The feasibility of using lime residues after juice extraction to produce dried NFC possessing superior redispersibility was here investigated. After autoclaving at 110-130â¯Â°C for 2â¯h, high-shear homogenization at 3800â¯Ãâ¯g for 15â¯min and high-pressure homogenization at 40â¯MPa for 5 passes, NFC having the diameters of 5-28â¯nm and crystallinity index of 44-46% could be obtained. After hot air drying at 60â¯Â°C, dried NFC could be well dispersed in water, with viscoelastic property similar to that of the originally prepared NFC suspension. Pectin associated with cellulose nanofibrils helped prevent fiber aggregation during drying and hence facilitating nanofiber redispersion in water. This observed trend was opposite to that belonging to fiber undergone chemical treatments to remove non-cellulosic constituents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 193, 1 August 2018, Pages 249-258
Journal: Carbohydrate Polymers - Volume 193, 1 August 2018, Pages 249-258
نویسندگان
Saranya Jongaroontaprangsee, Naphaporn Chiewchan, Sakamon Devahastin,