GC/MS Determination of Bioactive Constituents of Benzene/Ethanol Extractive of Leaves of Two Eucalyptus Cultivars

Liu, Qi-Mei; Luo, Yin-She; Hong, Wang; Peng, Wanxi; Yin, Shui-ping; Zhang, Dangquan; Ma, Qian

doi:10.1109/icbbe.2008.374

Cited by 1 publication

(1 citation statement)

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“…The interactions between the various extractive components and the fixed elements of wood cell walls are extremely complex, in part due to the wide variety of extractives compositions. Examples of literature seeking to better understand the variety of extractives components include Liu et al [1], who determined the chemical components of benzene/ethanol extractive-free of beech wood using an exhaustive set of GC-MS analyses. Meanwhile, Zhang et al [2] has studied on benzene/ethanol extractives of eucalyptus urophylla chips using a more complex Py-GC-MS configuration.…”

Section: Introductionmentioning

confidence: 99%

The Implication of Benzene–Ethanol Extractive on Mechanical Properties of Waterborne Coating and Wood Cell Wall by Nanoindentation

Sun

Yang

et al. 2019

Coatings

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The waterborne coating uses water as its solvent, which will partially dissolve wood extractives when it is applied to wood surfaces. This influences both the coating curing process and the mechanical properties of the cured coating. To investigate these influences, the mechanical properties of waterborne polyacrylic coating on control and extractive-free wood surfaces were investigated by nanoindentation. Reductions to elastic modulus (Er) and hardness (H) of the coating layer was observed in the wood cell walls adjacent to or away from coating layers. Extraction treatment resulted in significant decrease of the Er and H of the coating layer on extractive-free wood surface comparing with control wood, but the values slightly increased for extractive-free wood cell walls compared to a control. Er and H of coating in wood cell lumen were higher than the average value of coating layer on wood surface in both the control and extractive-free wood. The Er of wood cell wall without coating filled in lumen was significantly higher than those of filling with coating. However, there was no distinct difference of H. The Er and H of CCML in extractive-free wood were 15% and 6% lower than those in control ones, respectively.

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Section: Introductionmentioning

confidence: 99%