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Paper Information

Journal:   IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH   fall 2016 , Volume 31 , Number 3 (56) ; Page(s) 458 To 471.

The effects of modification with silan compound on physical properties of poplar wood (Popolus Deltoids)

* Natural Resources Faculty, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
This research was conducted to determine the optimum condition for modification poplar wood with 3-(trimethoxysilyl) propyl methacrylate and its effect on the physical properties of the wood. Test samples were divided into five groups: control, acidified ethanol/Silan at two subgroups of 110 and 150˚ C, and Ethanol/Silan/150° C at two subgroups of with and without Benzoyl peroxide. Samples were impregnated with silan compound using vacuum-pressure method in an experimental cylinder. Highest weight gain (24/40%) were determined at Silan/Et/BP/150˚ C. Silan/AEt/150˚ C specimens which showed most bulking efficiency and OH group's substitution 6. 81% and 1. 10 mol/gr, respectively. Modification reduced the water absorption and caused in dimensional stability improvement, and maximum dimensional stability were determined in samples modified using initiator containing solutions. After the immersion-drying cyclic test, the highest and lowest bulking efficiency were reported for Silan/AEt/150˚ C and Silan/Et/150˚ C. Maximum weight loss in immersion-drying test was determined in Silan/AEt/150 by the amount of 94/6%.
Keyword(s): Physical properties,3-(trimethoxysilyl) propyl methacrylate,acidified ethanol,bulking efficiency
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