کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5203934 | 1381944 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cellulose degradation in newsprint paper ageing
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The degradation of cellulose is an important factor influencing its physical, mechanical, optical and chemical properties and the longevity of paper in the electrical industry and in stored paper and books. A study of the accelerated ageing of newsprint paper has been performed at 98 °C during 0, 1, 2, 3, 5, 7, 10, 15, 20, 30 and 60 days. Degradation has been studied by viscometry, gel permeation chromatography (GPC) and saccharides determination. In the first stages of the accelerated ageing the cellulose depolymerisation takes place homogeneously (mainly due to the hydrolysis), later other reactions (oxidation, crosslinking) take place. The saccharides content in the paper decreases and the hemicelluloses are degraded faster.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 94, Issue 9, September 2009, Pages 1509-1514
Journal: Polymer Degradation and Stability - Volume 94, Issue 9, September 2009, Pages 1509-1514
نویسندگان
FrantiÅ¡ek KaÄÃk, Danica KaÄÃková, Michal Jablonský, Svetozár KatuÅ¡Äák,