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Author(s): REVOL JF; BRADFORD H; GIASSON J; MARCHESSAULT RH; GRAY DG
Title: HELICOIDAL SELF-ORDERING OF CELLULOSE MICROFIBRILS IN AQUEOUS SUSPENSION
Source: INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES 14 (3): 170-172
Date: 1992 JUN
Document Type: Journal : Note
DOI:
Language: English
Comment:
Address: MCGILL UNIV,PULP & PAPER RES CTR,DEPT CHEM,MONTREAL H3A 2A7,QUEBEC,CANADA.
Reprint: REVOL, JF, MCGILL UNIV,PULP & PAPER RES CTR,PAPRICAN,MONTREAL H3A
2A7,QUEBEC,CANADA. E-mail:
Author Keywords:
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Abstract: In many skeletal support systems of plants and animals, cellulose, chitin, and collagen occur in the form of microfibrils ordered in a chiral nematic fashion (helicoids). However, these structures remain poorly understood due to the many constituents present in biological tissues. Here we report an in vitro system that attracts by its simplicity. Only one chemical component, cellulose, is present in the form of fibrillar fragments dispersed in water. Above a critical concentration the colloidal dispersion separates spontaneously into a chiral nematic liquid crystalline phase. On drying this phase solidifies into regularly twisted fibrillar layers that mimic the structural organization of helicoids in nature.
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