Nanodomains of Iα and Iβ cellulose in algal microfibrils

被引：114
作者：
Imai, T [1 ]
Sugiyama, J [1 ]
机构：
[1] Kyoto Univ, Wood Res Inst, Kyoto 6110011, Japan
来源：
MACROMOLECULES | 1998年 / 31卷 / 18期
关键词：
D O I：
10.1021/ma980664h
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Ultrastructural localization of cellulose I-alpha and I-beta allomorphs in one microfibril from algal sources was investigated using electron microdiffraction. Both cellulose I-alpha and I-beta were characterized as one-chain triclinic and two-chain monoclinic unit cells, respectively, in agreement with previous studies. These two structures coexisted in each microfibril, alternating either longitudinally or laterally. The transition zone between the two phases was found to be the interface between adjacent H-bonded molecular sheets (i.e., 0.39-nm lattice planes).
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收藏
页码：6275 / 6279
页数：5
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