摘要
研究以巨龙竹作为原料,采用环氧氯丙烷进行醚化改性,通过扫描电子显微镜(SEM)、X射线光电子能谱(XPS)、傅立叶变换红外光谱(FTIR)、X射线衍射(XRD)和热重分析(TG)对原料和改性材料的特性进行对比研究。结果表明,经过环氧氯丙烷改性后增重率为68%,材料醚键含量增加,XPS图谱中C-O键的峰强度增强。环氧氯丙烷改性提高了巨龙竹木质纤维的热稳定性,改性后物料的最大降解速率温度提升到374℃。
Making lignocellulose from renewable resources is all the rage.It has natural advantages in replacing petrochemical products.In this study,lignocellulose material from Dendrocalamus sinicus was modified with 6 mL epichlorohydrin at 120℃for 4 h.Characteristic of raw and modified materials was comparatively studied by scanning electron microscope(SEM)、X-ray photoelectron spectroscopy(XPS)、Fourier Transform Infrared Spectrometry(FTIR)、X-ray diffraction(XRD)and Thermogravimetric Analysis(TG).The results indicated that the weight of materials increased 68%after modified.With the increase of ether bonds in material,the peak intensity of C-O in XPS spectra increased.Modification with epichlorohydrin also increased the thermal stability of Dendrocalamus sinicus lignocellulose.The maximum degradation temperature of modified materials shifted to high temperature(374℃)as compared to the raw materials(315℃).
作者
祝元晨
朱恩清
孙少飞
史正军
杨静
杨海艳
ZHU Yuan-chen;ZHU En-qing;SUN Shao-fei;SHI Zheng-jun;YANG jing;YANG Hai-yan(Key Laboratory of National Forestry and Grassland Administration for Highly-Efficient Utilization of Forest Biomass Resources in the Southwest China,Southwest Forestry University,Kunming 650224,Yunnan,China;School of Chemical Engineering,Southwest Forestry University,Kunming 650224,Yunnan,China)
出处
《竹子学报》
2021年第2期49-54,共6页
Journal of Bamboo Research
基金
云南省教育厅项目(2020J0389)
西南林业大学教育部重点实验室开放基金(KLESWFU-201807)
国家自然科学基金(31760195,31971741)。
关键词
巨龙竹
环氧氯丙烷
热重分析
Dendrocalamus sinicus
Epichlorohydrin
Thermogravimetric analysis
