Determination of wood wettability properties of oil palm trunk, Shorea sp. and Paraserianthes falcataria by contact angle method

International Conference on Agriculture, Environment, and Food Security

农业科学;生态环境科学

Sucipto, T.^1 ; Hartono, R.^1 ; Dwianto, W.^2

Faculty of Forestry, Universitas Sumatera Utara, Jl. Dr. Mansur Medan, 20135, Indonesia^1

Research Center for Biomaterials, Indonesian Institute of Sciences, Jl. Raya Bogor Km.46, Cibinong Bogor

16911, Indonesia^2

关键词: Adhesion properties;    Contact angle method;    Laminated beams;    Oil palm trunks;    Phenol formaldehyde;    Resin liquids;    Urea formaldehyde;    Wood wettability;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/122/1/012141/pdf
DOI  :  10.1088/1755-1315/122/1/012141

来源: IOP

【 摘 要 】

The aim of this study was to determine the wettability of the inner part of oil palm trunk (OPT), the outer part of OPT, OPT that densified 50%, Shorea sp. and Paraserianthes falcataria wood, as raw material for laminated beams. The wettability of the wood was measured by using cosine-contact angle (CCA) method, which is measuring the angle between dripped resin liquid and the wood surface. The resins that used in this study is phenol formaldehyde (PF) and urea formaldehyde (UF). The results showed that the Shorea sp. and P. falcataria woods have the smallest contact angle or the best wettability properties than OPT. Shorea sp. has the best wettability on PF resin (83.00°), while P. falcataria on UF resin (90.89°), this is due to the levels of starch and extractive substances in Shorea sp. and P. falcataria wood are smaller than OPT. Furthermore, Shorea sp. and P. falcataria wood surfaces are flatter and smoother than OPT, so that the resin will flow easier and wetting the wood surface. In this condition, the liquid resin will flow easier and formed a smaller contact angle. The good wettability of wood will enhance the adhesion properties of laminated beams.