Manufacture and properties of fiberboard made from Moso bamboo [Phyllostachys heterocycla]
2001
Matsumoto, K. (Gifu Univ. (Japan)) | Yamauchi, H. | Yamada, M. | Taki, K. | Yoshida, H.
This study was conducted to elucidate the properties of bamboo fibers defibrated by a pressurized single disk refiner (PSDR) and to examine the properties of bamboo fiberboard as compared to fiberboard made from wood. Moso bamboo (Phyllostachys heterocycla var. pubescens) and todomatsu wood (Abies sachalinensis) were defibrated by PSDR under several manufacturing conditions. Length and bulk density measurements were performed for all fiber types. UF bonded boards with 10% resin content were manufactured with a target density range of 0.55 to 0.95g/cube cm. Bending, internal bond (IB) and thickness swelling (TS) tests were performed, and the density profile in the thickness direction was determined. The results are summarized as follows : the surface of bamboo fibers was less defibrated than that of wood fibers. Longer fibers were found more frequently among the bamboo fibers than among the wood fibers. The bulk density of bamboo fibers was about twice that of wood fibers. There is no apparent effect of disk clearance on bending properties and IB strength in the range used in this study. Bamboo fiberboard showed a flat density profile at any density level, while wood fiberboard showed the typical M-shaped profile. The MOE values of bamboo and wood fiberboards were about the same, but the MOR of bamboo fiberboard was lower than that of wood fiberboard at any density level. The IB strength of bamboo fiberboard was higher than that of wood fiberboard. Bamboo fiberboard showed lower water absorption and TS than wood fiberboard. However, the spring back of bamboo fiberboard was greater than that of wood fiberboard at a density of 0.8g /cube cm and greater.
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