Effect of compression combined with steam treatment on the porosity, chemical compositon and cellulose crystalline structure of wood cell walls
作者： Jiangping Yin , Tongqi Yuan , Yun Lu , Kunlin Song , Hanyin Li
DOI: 10.1016/J.CARBPOL.2016.08.013
关键词:
摘要: Abstract The changes of porosity, chemical composition and cellulose crystalline structure Spruce (Picea abies Karst.) wood cell walls due to compression combined with steam treatment (CS-treatment) were investigated by nitrogen adsorption, confocal Raman microscopy (CRM) X-ray diffraction (XRD), respectively. A number slit-shaped mesopores a diameter 3.7 nm was formed for the CS-treated wood, more found in steam-treated wood. CRM results revealed affected β-aryl-ether links associated guaiacyl units lignin depolymerized followed re-condensation reactions. crystallinity index (CrI) crystallite thickness (D200) largely increased crystallization semicrystalline region. Higher degree increase both CrI D200 observed earlywood latewood ascribing greater amount than
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