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Title: Chemical modification of lignocellulosic materials by irradiation with Nd-YAG pulsed laser.
Authors: Botaro, Vagner Roberto
Santos, Cláudio Gouvêa dos
Arantes Júnior, Gilberto
Costa, Adilson Rodrigues da
Keywords: Laser
Issue Date: 2001
Publisher: Applied Surface Science
Citation: BOTARO, V. R.; SANTOS, C. G. dos; ARANTES JÚNIOR, G. Chemical modification of lignocellulosic materials by irradiation with Nd-YAG pulsed laser. Applied Surface Science, v. 183, n.1-2, p.120–125, nov. 2001. Disponível em: <>. Acesso em: 18 jun. 2012.
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.
ISSN: 01694332
metadata.dc.rights.license: O Periódico Applied Surface Science concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3310910802468
Appears in Collections:DEMET - Artigos publicados em periódicos

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