کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5448226 1511771 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Autohydrolysis processing as an alternative to enhance cellulose solubility and preparation of its regenerated bio-based materials
ترجمه فارسی عنوان
پردازش اتو هیدرولیز به عنوان یک جایگزین برای افزایش حلالیت سلولز و آماده سازی مواد زیستی بازسازی شده آن است
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
Kenaf core pulp has been successfully autohydrolysed using an autoclave heated in oil bath at various reaction temperature at 100, 120 and 140 °C. Membranes, hydrogels and aerogels were then prepared from autohydrolysed kenaf in urea/alkaline medium by casting on the glass plate, by using epichlorohydrin (ECH) as cross-linker via stirring and freeze-drying method, respectively. The autohydrolysis process reduced the molecular weight of cellulose and enhanced cellulose solubility and viscosity. Structure and properties of the regenerated products were measured with Field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), Ultraviolet-visible (UV-Vis) spectrophotometer and swelling testing. As the autohydrolysis temperature increased, the porosity of cellulose membranes (as seen from the morphology) increased. The autohydrolysis process improved the swelling porperties and transparency of regenerated cellulose hydrogels. This finding is expected to be useful in reducing molecular weight of cellulose in order to produce regenerated bio-based cellulose materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 192, 1 May 2017, Pages 181-189
نویسندگان
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