Title of article
Chemical modification of lignocellulosic materials by irradiation with Nd-YAG pulsed laser
Author/Authors
V.R. Botaro، نويسنده , , C.G. dos Santos، نويسنده , , G. Arantes J?nior، نويسنده , , A.R. da Costa، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2001
Pages
6
From page
120
To page
125
Abstract
Most reports about modification of lignocellulosics are mainly based on chemical modifications such as specific reactions on hydroxyl groups of cellulose. In this work, we describe the irradiation of Whatman 5 filter paper, microcrystalline cellulose and organosolv lignin with Nd-YAG laser pulses at 1064 nm. The chemical and structural properties of the degraded products were investigated by using FTIR and UV spectroscopies, conductimetrical and SEC analyses. While irradiation affects molar mass and polydispersity of lignin, no detrimental effects caused by Nd-YAG laser treatments were observed for cellulose samples. These results demonstrate that Nd-YAG laser can be used as a practical and selective degradation tool, opening a new field for obtaining surface modified natural fibers.
Keywords
Molecular weight , cellulose , Ablation , Modification , Surfaces , Lignin , Nd-YAG , Laser , Neodymium laser , Composite , Pulsed laser
Journal title
Applied Surface Science
Serial Year
2001
Journal title
Applied Surface Science
Record number
997400
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