The effect of sectioning and ultrasonication on the mesoporosity of poplar tension wood
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Increasing interest in understanding tension stress generation in tension wood with fibres having a gelatinous layer (G-layer) has focused attention on the specific role of this layer. To distinguish its contribution from those of other wall layers, the G-layer of wood sections was isolated by ultrasonication. The aim of this study was to assess the effect of sectioning and of the ultrasonic treatment on the mesoporosity of tension wood using nitrogen adsorption–desorption analysis. The results showed that the process of isolating the G-layer using ultrasonication strongly affects its mesoporosity. Most damage was found to occur during sectioning rather than as a result of the 15-min ultrasonic treatment.
KeywordsPore Size Distribution Ultrasonic Treatment Tension Wood Cell Wall Layer Wood Section
The authors wish to thank P. Brunier from Domaine Maspiquet in Grabels (Lycee Agropolis Montpellier) for the poplar tree used for this study and M. Chen for the pre-experiment work. This work was supported by National Natural Science Foundation of China (No. 31300481) and French National Research Agency (ANR-12-BS09-0004). The first author was supported by Chinese National Scholarship Fund.
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Conflict of interest
The authors declare that they have no conflict of interest.
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