EFFECT OF SPECIES ON THE HYDROXYL ACCESSIBILITY OF WOOD: RESULTS OBTAINED BY DEUTERIUM EXCHANGE

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TARMIAN A.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Journal of Forest and Wood Products Year:2017 | Volume:70 | Issue:2 Page(s): 353-360

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Title

EFFECT OF SPECIES ON THE HYDROXYL ACCESSIBILITY OF WOOD: RESULTS OBTAINED BY DEUTERIUM EXCHANGE

Author(s)

TARMIAN A. | Issue Writer Certificate

Keywords

HEAVY WATERQ1

DEUTERIUM EXCHANGEQ1

WOODQ2

HYDROXYL ACCESSIBILITYQ1

Abstract

In this research, the hydroxyl (OH) accessibility in the beech, spruce and pine WOOD was measured by impregnation of the WOOD specimens with HEAVY WATER (D2O) (deuterium exchange). After impregnation of WOOD specimens with HEAVY WATER and drying in a vacuum oven, the relative HYDROXYL ACCESSIBILITY (% accessible hydroxyl groups) was determined with ATR-FTIR spectrometry by calculation of the integrated peaks for the OH and OD stretching vibrations at wavenumbers of 3500 and 2500 cm-1, respectively. The absolute accessibility (mmol hydroxyls/g WOOD) was determined using an advanced dynamic vapour sorption equipment, (DVS-ET1) by measuring the increased dry mass of the sample due to deuteration after conditioning with HEAVY WATER at 95% RH. The results showed that the relative accessibility was not affected by the WOOD species and its extractive content and more than half of the hydroxyl groups could be accessible. The absolute accessibility in spruce was higher than that in beech. For spruce WOOD, the early WOOD had less accessible hydroxyl groups than the latewood. The poor linear correlation between the HYDROXYL ACCESSIBILITY and equilibrium moisture content (EMC) confirmed that the moisture absorption by WOOD was not controlled exclusively by the HYDROXYL ACCESSIBILITY.

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APA: Copy

TARMIAN, A.. (2017). EFFECT OF SPECIES ON THE HYDROXYL ACCESSIBILITY OF WOOD: RESULTS OBTAINED BY DEUTERIUM EXCHANGE. JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES), 70(2 ), 353-360. SID. https://sid.ir/paper/162873/en

Vancouver: Copy

TARMIAN A.. EFFECT OF SPECIES ON THE HYDROXYL ACCESSIBILITY OF WOOD: RESULTS OBTAINED BY DEUTERIUM EXCHANGE. JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES)[Internet]. 2017;70(2 ):353-360. Available from: https://sid.ir/paper/162873/en

IEEE: Copy

A. TARMIAN, “EFFECT OF SPECIES ON THE HYDROXYL ACCESSIBILITY OF WOOD: RESULTS OBTAINED BY DEUTERIUM EXCHANGE,” JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES), vol. 70, no. 2 , pp. 353–360, 2017, [Online]. Available: https://sid.ir/paper/162873/en

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