摘要
纤维素是地球上储量最丰富的天然高分子。结晶度是表征聚合物性质的重要参数,结晶度越大材料的尺寸稳定性、强度、耐热性等特性越好,因此纤维素结晶度的研究对于生物质材料的研发与应用至关重要。现今纤维素结晶度的测定方法主要有密度法、X射线衍射光谱法、红外光谱法、核磁共振法、拉曼光谱法、近红外光谱法。生物质材料的高强度等特性,主要是来源于其含有的纤维素,而纤维素的结晶度更是表征其性质的主要参数。因此测量多种生物质的纤维素结晶度就具有重要的意义。归纳了生物质材料中提取的天然纤维素、再生纤维素以及微纳米级纤维素结晶度的研究结果,并对测定纤维素结晶度的新技术进行简要展望。
Cellulose is the most abundant natural polymer on earth. Crystallinity is an important parameter of characterization of polymer properties, the crystallinity is the greater, the material size of stability, strength, heat resistance and other characteristics is the better, so the crystallinity of cellulose research is vital for development and application of biomass materials. Nowadays, the methods of determination of the crystallinity of cellulose include density method, X-ray diffraction spectroscopy, infrared spectroscopy,(nuclear magnetic resonance), Raman spectroscopy and near-infrared spectroscopy. The high strength and other properties of biomass materials are mainly derived from cellulose, and the crystallinity of cellulose is the main parameter to characterize its properties. Therefore, it is of great significance to measure the crystallinity of cellulose. In this paper, natural cellulose, regenerated cellulose and micronano-grade cellulose crystallinity extracted from biomass materials were summarized.
作者
杨蕊
韩景泉
兰平
陈刚
周定国
YANG Rui;HAN Jing-quan;LAN Ping;CHEN Gang;ZHOU Ding-guo(College of materials Science and Engineering,Nanjing Forestry University,Nanjing,210037)
出处
《木材加工机械》
2018年第4期29-35,共7页
Wood Processing Machinery
基金
江苏省自然科学基金资助项目(BK20150876)
江苏高校优势学科建设工程资助项目(PAPD)
中国博士后科学基金资助项目(2017M611825)
