AFM study of crystalline cellulose in the cell walls of straw

作者：Li W^*; Yan LF; Yang JL

来源：Polymer International, 2006, 55(1): 87-92.

DOI：10.1002/pi.1923

• crystalline cellulose
• atomic force microscopy (AFM)
• DMSO
• cell wall

Crystalline cellulose in the cell walls of straw was studied by atomic force microscopy (AIM). The samples were first treated and then observed by AFM under dimethylsulfoxide (DMSO). The crystalline regions were located and two allomorphs of crystalline cellulose, triclinic I-alpha and monoclinic I-beta phases, were identified. In most crystalline regions, the I-alpha and I-beta phases are intimately associated, with the I-beta phase more abundant than the I-alpha phase. In some small domains only one phase with long-range order was observed. It was demonstrated that in these one-phase domains, I-alpha phase crystals always have their (010) plane lying parallel to the cell wall surface and I-beta phase crystals with (110) plane lying parallel.

• 出版日期2006-1
• 单位中国科学技术大学