Effect of Methanol Extraction on Cell Walls Pore Structure of <italic style="font-style: italic">Eucalyptus obliqua</italic> Heartwood

Wei-kai WANG; Ming-han LI; Chang LIU; Jia-bin CAI

doi:10.12326/j.2096-9694.2021010

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Effect of Methanol Extraction on Cell Walls Pore Structure of Eucalyptus obliqua Heartwood
1.College of Material Science and Engineering，Nanjing Forestry University，Nanjing 210037，Jiangsu，China
Vol. 35, Issue 6, Pages: 26-30(2021)
DOI： 10.12326/j.2096-9694.2021010

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汪为锴,李明晗,刘畅等.甲醇抽提处理对斜叶桉心材细胞壁孔隙结构特征的影响[J].木材科学与技术,2021,35(06):26-30.

WANG Wei-kai,LI Ming-han,LIU Chang,et al.Effect of Methanol Extraction on Cell Walls Pore Structure of Eucalyptus obliqua Heartwood[J].Chinese Journal of Wood Science and Technology,2021,35(06):26-30.
汪为锴,李明晗,刘畅等.甲醇抽提处理对斜叶桉心材细胞壁孔隙结构特征的影响[J].木材科学与技术,2021,35(06):26-30. DOI： 10.12326/j.2096-9694.2021010.

WANG Wei-kai,LI Ming-han,LIU Chang,et al.Effect of Methanol Extraction on Cell Walls Pore Structure of Eucalyptus obliqua Heartwood[J].Chinese Journal of Wood Science and Technology,2021,35(06):26-30. DOI： 10.12326/j.2096-9694.2021010.

摘要

为研究斜叶桉心材细胞壁孔隙结构特征，利用甲醇对斜叶桉心材粉末进行抽提处理，再用气体吸附法和比重瓶法对甲醇抽提样和对照样进行细胞壁孔隙结构测试。在本试验条件下，通过比较两种试样的测试结果，发现斜叶桉心材抽提物主要存在于0.4~0.7 nm范围内细胞壁微孔中，抽提物的存在使斜叶桉心材细胞壁具有较小的孔体积和孔隙率，这可能是斜叶桉干燥速度慢的原因之一。

Abstract

In order to investigate the effect of methanol extraction on cell walls pore structure of ,Eucalyptus obliqua ,heartwood, the heartwood powder was extracted with methanol. The cell wall pore structures of controlled and extracted samples were evaluated by the N,2, CO,2, sorption and pycnometer methods, respectively. The results indicated that ,Eucalyptus obliqua, heartwood extractives mainly existed in the micropores of cell walls in the range of 0.4~0.7 nm. The existence of extractives in the cell walls of ,Eucalyptus obliqua, heartwood led smaller pore volume and porosity, which possibly was one of the reasons for the slow drying speed of ,Eucalyptus obliqua, heartwood.

关键词

甲醇抽提斜叶桉心材细胞壁孔隙结构气体吸附法比重瓶法

Keywords

methanol extractionEucalyptus obliqua heartwoodcell wall pore structuregas isotherm sorption methodpycnometer method

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Effect of Methanol Extraction on Cell Walls Pore Structure of Eucalyptus obliqua Heartwood

DOI： 10.12326/j.2096-9694.2021010

摘要

Abstract

关键词

Keywords

references