Influence of Preboiling on the Drying,Dimensional and Hygroscopic Properties of Sitka Spruce ( Pinus Sitchensis ) Wood

Abstract

The effects of preboiling were investigated on the drying, hygroscopic and dimensional properties of Scottish grown Sitka spruce (Pinus sitchensis) wood. There were minor improvements in the drying and dimensional changes with the only significant changes being the hygroscopic behaviour of wood dried under high temperature. The limitations in the changes observed in the wood properties are possible indications of insignificant changes in the chemical and anatomical properties of this species after preboiling.

There is therefore the need for further investigations on the effects of different level preboiling on the extractive contents and the anatomical properties, which can be related to the little changes observed in this study.

Keywords

PREBOILING DRYING TEMPERATURE SHRINKAGE SWELLING HYGROSCOPICITY WOOD

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References

BAINES

E. F.

, SAUR

J. M

. 1985. Preservative treatment of spruce and other refractory wood. Proceedings of the American Wood Preservers Association, No 81: 136— 147.

BAO

F. C.

and Lu

J. X

. 1991. Studies on the permeability of spruce wood and the effect of benzene-ethanol extraction upon it. Wood Industry Beijing, 5(4): 28–32.

DESPOT

. 1992. Effect of bacterial on wood properties. Drvna Industrija, 43(4): 127–135.

EFRANSJAH

, KILBERTUS

and BUCUR

. 1989. Impact of water storage on mechanical properties of spruce as detected by ultrasonics. Wood Science and Technology, 23(1): 35 —42.

GLOSSOP

B. R

. 1994. Effects of hot-water soaking or freezing pretreatments on the drying rates of two eucalypts. Forest Products Journal, 44(1): 29— 32.

ILIC

. 1995a. Advantages of prefreezing for reducing shrinkage-related degrades in eucalyptus:

general considerations and review of literature. Wood Science and Technology, 29(4): 277 —285.

ILIC

. 1995b. Influence of on shrinkage-related degrades in Eucalyptus regans Muell

Holz als

Roh un Werkstoff

, 57(4): 241 — 245.

JOHNSON

B. R

. 1979. Permeability changes induced in three Western conifers by selective bacterial inoculation. Wood and Fiber, 11(1): 10–21.

10.

KANAGAWA

, OKUYAMA

and HATTORI

. 1988. The increase of permeability in wood by direct heating method. Journal of Japan Wood Research Society, 34(6): 479 — 484.

11.

KOBAYASHI

, IIDA

, IMMAMURA

and WATANABE

. 1998a. Drying and anatomical characteristics of sugi wood attacked by bacteria during pond storage. Journal of Wood Science, 44(6): 432 —437.

12.

KOBAYASHI

, IIDA

, IMMAMURA

and WATANABE

. 1998b. Improvement of penetrability of sugi wood by impregnation of bacteria using sap-flow method. Journal of Wood Science, 44(6): 482 — 485.

13.

LIU

. 1994. Heat treatment of Eucalyptus wood and its permeability improvement. Wood Industry Beijing, 8(3): 30 — 33.

14.

MILITZZ

, DE-MEIJER

and VAN-DER-ZWAN

R. P

. 1996. Unsteady state diffusion of methanol in Douglas fir heartwood at high temperatures. Holzforschung, 50(2): 135 — 143.

15.

SIMPSON

W. T

. 1975. Effect of steaming on the drying rate of several species of wood. Wood Science, 7(3): 247 — 255.