Citation: . A METHOD OF PREPARING SPHERICAL NANO-CRYSTAL CELLULOSE WITH MIXED CRYSTALLINE FORMS OF CELLULOSE Ⅰ AND Ⅱ*[J]. Chinese Journal of Polymer Science, ;2001, 19(3): 291-296. shu

A METHOD OF PREPARING SPHERICAL NANO-CRYSTAL CELLULOSE WITH MIXED CRYSTALLINE FORMS OF CELLULOSE Ⅰ AND Ⅱ*

Received Date: 4 December 2000

A new kind of nano-crysta cellulose (NCC) prepared from natural cotton fiber has been obtained by the method ofacid hydrolysis. Compared to most other nanophase materials that derive from inorganic materials, our products are preparedfrom natural cotton fibers. The products are of spherical shape with mixed crystal forms of cellulose I and II. The preparationconditions determine the properties of the products. Prior treatment is a critical procedure. The properties of the products arealso strongly affected by such conditions as the kinds of acids used,the ratio of the acid mixture,the acid concentration,the ultrasonic agitation time and hydrolysis temperature.The number average molecular weight of NCC is determined by gel permeation chromatography (GPC).The particle size and shape were determined by transmission electron microscopy (TEM).X-ray diffraction was used to detect the crystallinity and average crystallite size of the particle.
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