WOOD RESEARCH Volume 68, Number 3, 2023
Chun-Won Kang, Kazuharu Hashitsume, EUN-SUK JANG, and Haradhan Kolya

Relationship between Wood Anatomical Features and Surface Roughness Characteristics

This study aimed to investigate the relationship between surface roughness and anatomical features of wood in 15 different species of boards. Surface roughness was measured parallel and perpendicular to the wood grain using a surface profilometer, and anatomical features such as pore size and distribution were analyzed using microscopic techniques. The results showed that surface roughness perpendicular to the grain direction was consistently higher than that parallel to the grain direction for all wood samples. This difference in roughness was correlated with pore size and density. It shows that the larger pores and lower density lead to higher roughness perpendicular to the grain. The study also found that traditional hand planning methods (push and pull) produced a smooth surface finish, with no statistical differences in roughness.

WOOD RESEARCH Volume 68, Number 1, 2023
Mingming Sun, Cong Cao, Lizhuan Zuo, Xianghua Yue, Manjun Zhan, Bin Xu, and Zhenfu Fang

Study on basic wood properties of critically endangered species Syzygium album

Syzygium album is a critically endangered species, and the wood basic properties haven’t been reported. Therefore, this paper analyzes the wood from the anatomical characteristics, physical properties, and secondary components. The results showed that observed S. album wood of a 46-year-old tree is diffuse-porous to semi-diffuse-porous wood. The maximum vessel tangential diameter is 127.47 μm, which is found at the beginning of the earlywood. The wood rays are heteromorphic type I and II, and the multi-column part is mostly 3 cells wide. In physical properties, the air-dry density is classified as “heavy”, whereas its air-dry and full-dry differential dry shrinkage are “small” and “medium”, respectively. This indicates that the wood performs better when dried. The content of benzene-ethanol extract from S. album wood is 2.10%. The benzene-ethanol extracts were analyzed by GC-MS, and the main components are 2,6,11,15-tetramethylhexadecane (3.29%), eicosamethyl cyclodecasiloxane (10.02%), octadecamethyl cyclononasiloxane (7.43%), and tetracosamethyl cyclododeca- siloxane (3.60%), etc.