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The nascent morphology of cellulose produced by Acetobacter aceti (AJ12868) incubated at 30 atmospheres pressures was investigated using AFM, TEM, X-ray and optical microscopy. The bacteria survived the elevated pressure and produced cellulose. The ribbons produced at 30atm had similar crystalline features as the ribbons produced in the control medium but exhibited larger microfibril aggregates.
A recent structure determination of native cellulose has shown that it is composed of two different crystal structures, a two-chain monoclinic phase and a single-chain triclinic phase. In this article a molecular dynamics study of the two allomorphs is presented, and a general picture of structure and energetics is provided. Consistent with experimental data, the monoclinic phase is more stable...
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