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Subcritical and supercritical water are known to dissolve crystalline cellulose, offering a simple way to produce low molar mass cellulose which precipitates at ambient temperatures. However, the yield of precipitate is limited by concomitant degradation reactions. In this study, the formation of cellulose precipitate from six different microcrystalline celluloses (MCC) was investigated in 0.2 s treatments...
The swelling and dissolution phenomena of microcrystalline cellulose (MCC) were investigated in subcritical and supercritical water. Commercial MCC was treated in water at temperatures of 250–380 °C and a pressure of 250 bar for 0.25–0.75 s. As reaction products, undissolved but depolymerised cellulose residue, short-chain cellulose precipitate, water-soluble cello-oligosaccharides and monosaccharides,...
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