Crystals of cellulose grown from TFA solution |
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| Authors: | D Fengel M Stoll |
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| Institution: | 1. Institut für Holzforschung der Universit?t München, Winzererstr. 45, D-8000, Munchen 40, BRD
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| Abstract: | Summary Crystallization experiments starting from highly concentrated solutions of cellulose in trifluoroacetic acid (TFA) resulted
in white crystalline particles with diameters of as much as 0.5 mm. The plate-like particles consist of lamellae arranged
perpendicular to the surface. The lamellae are grown from thin scale-like platelets showing clear diffraction reflexes and
an internal parallel structure. Parallel structures were also detected in partially hydrolyzed cellulose. It is concluded
that cellulose chains of low DP tend to rearrange themselves by a side by side accumulation of extended molecules. |
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