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Chemical pulp was prepared by the low-temperature, atmospheric pressure, and short reaction time pulping of Eucalyptus wood chips using a high-boiling-point solvent. The pulping conditions and pulp properties were evaluated. After the digestion of the Eucalyptus chips, pulp containing 6% residual lignin was obtained in 59.6% yield. It exhibited a low shive content and a sufficiently pulped appearance...
Hardwood bleached Kraft pulp was treated with an endoglucanase prior to Valley beating. The Valley-beaten pulp slurry was further ground with a particle grinder in order to evaluate the effect of enzyme beating on preparation of microfibrillated cellulose (MFC). The time required to make 100 mL Canadian Standard Freeness pulp slurry was greatly reduced by enzyme pre-treatment. The viscosity of the...
The chemical characteristics of degraded beeswax in the wax treated volumes of the annals of King Sejong in the Joseon Dynasty of Korea were investigated and compared with a standard beeswax sample. The oxidation index of the artificially thermally aged beeswax was similar to that of the beeswax in the waxed volumes of the annals of King Sejong. The beeswax in the waxed volumes had gradually degraded...
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