کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5156728 | 1500580 | 2017 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The chemical-free production of nanocelluloses from microcrystalline cellulose and their use as Pickering emulsion stabilizer
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The chemical-free production of nanocelluloses from microcrystalline cellulose and their use as Pickering emulsion stabilizer The chemical-free production of nanocelluloses from microcrystalline cellulose and their use as Pickering emulsion stabilizer](/preview/png/5156728.png)
چکیده انگلیسی
This paper takes a comparative approach in characterizing two types of nano-scale cellulosic particles obtained using chemical-free pathways, either by nearcritical water treatment or by high-shear homogenization from the same microcrystalline cellulose (MCC). The nearcritical water treatment efficiently depolymerized cellulose, producing a solid precipitated fraction of low-molecular-weight material containing cellulose II, while homogenization mechanically deconstructed MCC without altering its molecular structure. Both pathways yielded nanocellulose-like materials yet with different morphologies. The mechanically produced, rod-like particles were obtained with high yield. In contrast, the hydrothermal precipitate exhibited more hydrophobic ribbon-like particles that provided a greater level of particle-particle interaction. Both materials successfully acted as stabilizers for oil-in-water Pickering emulsions; however, the hydrothermally-produced material exhibited superior performance, with stable emulsions obtained upon addition of as low as 1.0Â wt.% cellulose. These two pathways are highly relevant for altering the structure and properties of MCC and for formulating new, sustainably produced nanocellulose-based materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 178, 15 December 2017, Pages 48-56
Journal: Carbohydrate Polymers - Volume 178, 15 December 2017, Pages 48-56
نویسندگان
Jean Buffiere, Zoltán Balogh-Michels, Marc Borrega, Thomas Geiger, Tanja Zimmermann, Herbert Sixta,