【摘要】 利用核磁共振波谱仪和X射线衍射仪,对γ射线辐照处理前后的竹材进行CP/MAS13C-NMR图谱、XRD光谱分析,得出竹材细胞壁主要化学组分在辐照过程中结构和性质的变化规律。随着辐照剂量升高,竹材纤维素结晶度呈现先升高后降低的趋势,半纤维素发生降解,木质素由非酚型向酚型转变。更多还原

【Abstract】 The structures and qualities of main chemical compositions in cell wall of bamboo treated with γ rays were tested by nuclear magnetic resonance spectrometer(NMR) and X-ray Diffraction(XRD).The result indicated that the bamboo crystallinity increased at the beginning of irradiation process,while the crystallinity reduced when the irradiation dose was raised to about 100 kGy.During the whole irradiation process,hemicellulose degraded,and with the irradiation doses increased the non-phenolic lignin changed to the phenolic.更多还原