کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9748183 | 1492990 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Direct analysis of lignin and lignin-like components from softwood kraft pulp by Py-GC/MS techniques
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
The effect of bleaching on lignin structures in softwood pulps was studied by following the changes in guaiacyl-type degradation product distribution. The residual lignin structures that had been modified during cooking were removed during the course of bleaching. The residual lignin in fully bleached pulps therefore was found to bear features characteristic of native lignin in addition to increased oxidation. A striking enrichment of hydroxyphenyl-type aromatic pyrolysis products was observed during bleaching. It is suggested that they are derived not only from lignin but also from other pulp components.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Analytical and Applied Pyrolysis - Volume 74, Issues 1â2, August 2005, Pages 123-128
Journal: Journal of Analytical and Applied Pyrolysis - Volume 74, Issues 1â2, August 2005, Pages 123-128
نویسندگان
Taina Ohra-aho, Maija Tenkanen, Tarja Tamminen,