کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5209781 | 1503075 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of mechanical treatments on the properties of cellulose nanofibers isolated from microcrystalline cellulose
ترجمه فارسی عنوان
تأثیر درمان های مکانیکی بر خواص نانو فیبرهای سلولز جدا شده از سلولز میکرو کریستالی
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کلمات کلیدی
سلولز های میکروکریستالی، سبوس سلولز، درمان های مکانیکی، نانوکامپوزیتهای فیلم، هیدروکسی پروپیلن سلولز،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
The possibility of preparing cellulose whiskers-like materials by mechanical treatment of commercially available microcrystalline cellulose (MCC) was explored. High shear homogenization, grinding with a supermass colloider, and hammer-milling were the processes selected to disintegrate the MCC, which yielded F-MCC, G-MCC and H-MCC, respectively. Processing aqueous dispersions with high solid content allowed for the production of cellulose particles with greatly reduced dimensions. Morphological characterization revealed that homogenization and grinding reduced the particle size more effectively than hammer-milling, although the disintegration was incomplete in all cases. The reinforcing potential of the materials was evaluated against commercially available whiskers by using the various particles as fillers to mechanically reinforce hydroxypropylcellulose. Nanocomposite films containing 5, 10, or 20Â wt.% of the filler were prepared and the mechanical properties were characterized. The results show that H-MCCs are just slightly better than the original MCC, whereas F-MCC and G-MCC performed similar to whiskers at 10Â wt.% loading, despite the presence of a fraction of micrometer-sized particles. It is therefore reasonable to envision the use of the more easily produced F-MCC and G-MCC as replacement of cellulose whiskers in some applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 85, December 2014, Pages 134-141
Journal: Reactive and Functional Polymers - Volume 85, December 2014, Pages 134-141
نویسندگان
Davide Bandera, Janak Sapkota, Sébastien Josset, Christoph Weder, Philippe Tingaut, Xin Gao, E. Johan Foster, Tanja Zimmermann,