二次纤维聚集态结构的研究进展

Research Progress in Aggregation Structure of Recycled Plant Fiber

为了研究二次纤维的角质化机理并提出抑制方法,实现二次纤维的高效绿色循环利用,综述了基于共结晶角质化机理的纤维素聚集态结构的研究现状和进展,介绍了纤维素聚集态结构模型和氢键链接方式,着重介绍了目前纤维素聚集态结构研究和氢键研究的进展,综述了目前纤维素聚集态研究手段的多样化:计算机分子模拟、广角X衍射衍射(XRD)、交叉极化/魔角旋转固体核磁共振13C(CP/MAS13C NMR),同步辐射XRD衍射、中子衍射和傅里叶红外(FT-IR)。研究内容从对天然纤维素的基本建模深入到分子链水平的原子链接、氢键模式的研究,研究手段经历了从使用单一仪器发展到多种仪器手段辅助表征的过程。纤维素聚集态结构的研究将是二次纤维角质化机理研究以及纤维素化学研究的重要课题。

In order to elaborate the mechanisms and reasons of hornification which affects the properties of recycled plant fibers,then to realize efficient utilization of recycled plant fibers,this article reviews： research status and progress of the cellulose aggregation structure based on the mechanism of cocrystallization;the aggregation structure model and hydrogen bond linkage,especially natural cellulose crystal structure and the research progress of hydrogen bond;diversity in the research methods of cellulose supermolecules： computer molecular simulation,wide angle X-ray diffraction（XRD）,solid-state cross polarisation magic angle spinning carbon-13 nuclear magnetic resonance（CP/MAS 13C NMR）,synchrotron radiation X-ray diffraction（XRD）,neutron diffraction and Fourier transform infra-red spectroscopy（FT-IR）.The study goes deep into the molecular chain modeling of hydrogen atoms links in content and the application of auxiliary characterization in instrument means.Research of cellulose aggregation structure is an important subject of honification in recycled plant fibers and cellulose chemical research.