CAJ | 학술논문

通过测定在200-600℃炭化竹材得到的固体产物的碳、氢、氧元素的含量及它们的红外光谱,研究了在炭化过程中竹材中半纤维素、纤维素及木素的变化规律.结果表明,结合元素分析,红外光谱分析方法是研究竹材炭化机理的有效手段.在200℃以前,竹材中的半纤维素和纤维素的大量羟基断裂,并结合成水而失去.在200-250℃之间,竹材中的纤维素被降解,其中的吡喃型环也遭到破坏.并且木素中的甲氧基也被脱去.竹材中的木素网状结构在250-400℃之间遭到完全的破坏.竹炭中的碳原子在600℃已基本上完成了芳环化.图3表2参15.
통과측정재200-600℃탄화죽재득도적고체산물적탄、경、양원소적함량급타문적홍외광보,연구료재탄화과정중죽재중반섬유소、섬유소급목소적변화규률.결과표명,결합원소분석,홍외광보분석방법시연구죽재탄화궤리적유효수단.재200℃이전,죽재중적반섬유소화섬유소적대량간기단렬,병결합성수이실거.재200-250℃지간,죽재중적섬유소피강해,기중적필남형배야조도파배.병차목소중적갑양기야피탈거.죽재중적목소망상결구재250-400℃지간조도완전적파배.죽탄중적탄원자재600℃이기본상완성료방배화.도3표2삼15.
Bamboo was carbonized at different temperatures ranging from 200℃ to 600℃.The dependence of the change of hemicellulose, cellulose, and lignin on the temperature was investigated by means of elemental analysis and Fourier Transform Infrared (FTIR) spectra of the residual solid products. The results showed: (1) Below 200℃, hemicellulose in bamboo was decomposed and a large amount of hydroxyl groups are dislocated from hemicellulose and cellulose, accompanied by the evolution of water to escape. (2) 200℃~250℃, cellulose in bamboo was drastically decomposed whereas the net structure of lignin keep stable, with the except of the dislocation of methoxyl groups from lignin. (3) 250℃~400℃, the net structure of lignin collapse, up to 400℃, followed by that the more position in aryl groups are substituted. (4) For bamboo carbonization, the aromatization of residual carbon has approximately completed at the temperature as high as 600℃. But the fusion of aromatic rings possibly does not occur.