Application of Atomic Force Microscope in Cellulosic Ivestigation
Atomic force microscope (AFM) plays an important role in the surface imaging technologies.The basic principle of AFM is the measurement of the force between a sharp tip and sample surface.In order to profile the structure characteristics of biopolymers, AFM can work under contact mode, non-contact mode and tapping mode, respectively.High-resolution images of cellulose from AFM show that cellobiose is the repeat unit of cellulose, and triclinic and monoclinic crystal systems naturally exist in the same microfibril of cellulose with a displacement of adjacent chains by a quarter of cellobiose units.In cell wall, fibers contact with each other by hemicelluloses to form a network.However, the structure of fiber ranges with variety of plants and cell wall region.Furthermore, AFM promotes the application research on cellulose.The results from AFM images are important for improving of pulp properties, paper conservation, and exploration of reaction mechanism.
atomic force microscopecellulosecell wallstructureapplication
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