[17p-A405-1~14] 3.6 Laser processing (formerly 3.7)

△ [17p-A405-6] Characterization of products formed by laser irradiation to wood components

〇Shuhei Yamada¹, Leo Adachi¹, Shun-ichi Ishiuchi², Hiroyuki Wada¹ (1.Tokyo Tech. Mater. Chem., 2.Tokyo Tech. Sci.)

Keywords:Cellulose nanofiber, Lignocellulose nanofiber, Laser

Lignocellulose nanofiber (LCNF) was irradiated with a laser with an output of 130 mJ/cm² for 30 min. Solid state nuclear magnetic resonance spectroscopy (CP/MAS method) revealed that the peaks derived from lignin and hemicellulose decreased and the peaks derived from carbonyl increased. In UV-vis, no significant change was observed in the absorption (280 nm) derived from lignin. In ATR, no new peaks were found by laser irradiation. In SEM, no significant change was observed in the shape of the fiber due to laser irradiation.