Enhanced surface energy of a tropical hardwood using a cold atmospheric plasma

Authors

Leo Mendel D. Rosario ⋅ PH National Institute of Physics, University of the Philippines Diliman
Ronniel D. Manalo ⋅ PH College of Forestry and Natural Resources, University of the Philippines, Los Baños
Jenica Rozette Y. Uy ⋅ PH National Institute of Physics, University of the Philippines Diliman
Karel G. Pabeliña ⋅ PH National Institute of Physics, University of the Philippines Diliman
Henry J. Ramos ⋅ PH National Institute of Physics, University of the Philippines Diliman
Roy B. Tumlos ⋅ PH College of Arts and Sciences, University of the Philippines

Abstract

The study reports about the enhanced surface energy (SE) of Yemane (Gmelina arborea) wood using a Ar/N2-based Microwave Atmospheric Plasma Pencil (MAPP). Contact angles of test liquids of de-ionized water, ethylene glycol, and diiodomethane on plasma processed Yemane wood surfaces were obtained using a digital microscope. The SE for the plasma treated Yemane samples under various operational parameters (treatment time, delivered power, gas flow rates, and nozzle-to-substrate distance) was determined using the Good-Van Oss-Chaudhury model. With 1 s and 65 W of plasma processing, a total SE of 51.7 mJ/m² can already be obtained as compared to untreated wood with 26.4 mJ/m². The work of adhesion was also determined using the Dupré equation. For the treated samples, the work of adhesion of the test liquids was found to be 90-150 mN/m which is higher to untreated samples with only 45-75 mN/m.

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Issue

2014: Proceedings of the 32nd Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP2014-PA-21

Section

Poster Session PA

Published

2014-10-17

How to Cite

[1]

LMD Rosario, RD Manalo, JRY Uy, KG Pabeliña, HJ Ramos, and RB Tumlos, Enhanced surface energy of a tropical hardwood using a cold atmospheric plasma, Proceedings of the Samahang Pisika ng Pilipinas 32, SPP2014-PA-21 (2014). URL: https://proceedings.spp-online.org/article/view/1868.