Effect of H⁺ and H₂⁺ ion beam irradiation on wettability of Narra (Pterocarpus indicus) wood chips

Authors

Jonathan Lee C. Monasterial ⋅ PH National Institute of Physics, University of the Philippines Diliman
Gene Q. Blantocas ⋅ PH National Institute of Physics, University of the Philippines Diliman
Henry J. Ramos ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

Positive hydrogen ion beams, H⁺ and H₂⁺ are produced and extracted from a gas discharge ion source. The extracted beam current ranges from 0.01 to 0.07 μA for discharge currents of 1.0 to 4.0 mA, discharge potential between 600 V to 1000 V.
These beams produced at 1 mA and 2 mA discharge currents are used for surface modification of 1.1 x 1.5 x 0.5 cm³ local narra (Pterocarpus indicus) wood chips positioned at 70 mm downstream from the ion source. The chips were exposed for about 30 minutes. Tests indicate hydrophobic characteristics for ion-irradiated samples compared to controlled samples. The best sample exhibiting longest absorptive inhibition was irradiated for 30 minutes using a discharge current of 1.0 mA, 720 eV energy and 0 V extraction potential. SEM micrograph of the irradiated substrates reveals surface modification of the narra wood chips.

Downloads

Issue

2004: Proceedings of the 22nd Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2004-PB-23

Section

Poster Session PB

Published

2004-10-25

How to Cite

[1]

JLC Monasterial, GQ Blantocas, and HJ Ramos, Effect of H+ and H2+ ion beam irradiation on wettability of Narra (Pterocarpus indicus) wood chips, Proceedings of the Samahang Pisika ng Pilipinas 22, SPP-2004-PB-23 (2004). URL: https://proceedings.spp-online.org/article/view/SPP-2004-PB-23.