Physical and Mechanical Properties of Heat-treated Domestic Yellow Poplar

Abstract

Recently, yellow poplar (Liriodendron tulipifera L.) is getting attention in Korea due to the fast growing and high yield and quality of lumber. But, it is thought that the color difference between heartwood and sapwood may restrict the practical use of it. This study was aimed to enhance the

Changes in gas permeability and pore structure of wood under heat treating temperature conditions

“…In this study, it was difficult to determine the difference of anatomical features in the surface pore morphology of the cross section by heat treatment in yellow poplar, similar to the findings in Kim et al [24].…”

Cork-Containing Barks—A Review

“…The average ring width of Q. variabilis is significantly smaller than in Q. suber cork (0.82 vs. 2.06 mm), and each ring has two to six latecork cells representing 14% of the ring width (Kim, 1993;Miranda et al, 2013;Ferreira et al, 2016a). Prism height in the earlycork cells of the reproduction cork of Q. variabilis is smaller than in Q. suber (23 vs. 30-40 µm, Table 2).…”

“…The solid fraction in earlycork is, therefore, higher in the Chinese cork than in Q. suber cork (13 vs. 8-9%) (Miranda et al, 2013;Ferreira et al, 2016a). Consequently, Q. variabilis cork has higher density than Q. suber, what constitutes a disadvantage as an insulating material (Kim, 1993;Miranda et al, 2013). Another difference between these two corks is the appearance of the cell wall: the lumen side of the cork surface of Q. variabilis is rough with deposits of several dimensions, while in Q. suber, it is smooth and with only occasional deposits (Miranda et al, 2013).…”

“…Some research about this species can be found, mainly in China, Japan, and Korea as demonstrated by several authors [e.g., Kim et al (1990), Kim (1993), Wei et al (2007), YaFang et al (2009, Zhang et al (2009), andMiranda et al (2013)], but with the limitation that most of it is not written in English. Recently, Ferreira et al (2016a) analyzed the virgin and reproduction cork, comparing their chemical and cellular characteristics with those of the cork oak.…”

“…Like in the cork oak, lenticular channels cross radially the cork layer with a circular or elliptical shape in the tangential section and with filling tissue (Kim, 1993;Ferreira et al, 2016a).…”