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本文用电子显微镜和电子衍射技术研究苎麻的纤维素Ⅱ和碱纤维素Ⅱ单晶。纤维素Ⅱ单晶成长条状,长约2μ,宽约0.4～0.6μ,电子衍射技术表明长条状单晶长的方向是纤维分子链的方向,故分子链不应该是折叠链结构。碱纤维Ⅱ单晶是不规则的多边形,单晶的大小为0.3～4μ,碱纤维素Ⅱ孪晶是由两块单晶重叠并错开约2.6°角度而构成的,孪晶面为(001)面。
In this paper, electron microscopy and electron diffraction techniques of ramie cellulose Ⅱ and alkali cellulose Ⅱ single crystal. Cellulose ¢ ò single crystal grows in the shape of a strip with a length of about 2μ and a width of about 0.4 ~ 0.6μ. Electron diffraction shows that the direction of the long single crystal is the direction of the fiber molecular chain, so the molecular chain should not be a folded chain structure. Alkaline fiber Ⅱ is an irregular polygon with single crystal size of 0.3 ~ 4μ. Alkaline cellulose Ⅱ twin is composed of two single crystals overlapped and staggered by about 2.6 °, and the twin plane is (001) surface.