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A chemically modified hydrophobic cellulose material was wetted by force in vacuo and allowed to dry under ambient conditions. Most known materials shrink upon drying and swell upon wetting, a phenomenon known as dry-shrinkage; and thus are characterized by a dry-shrinkage coefficient either equal or greater than zero. Different from conventional materials, sheets of hydrophobic cellulose fibres expand...
Wood (kraft) pulp was first dried into a low-density foam-like material by solvent-exchange with anhydrous ethanol. X-Ray tomography showed that, while pulp fibres are flat and resemble ribbons when dried from water, those dried from ethanol are quasi-tubular, inferring that capillary forces derived from a low surface tension solvent are not strong enough to promote fibre lumen collapse, contrary...
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