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Konjac glucomannan (KGM) was esterified with phthalic anhydride catalyzed using pyridine, resulting in a biomass-based copolymer (PKGM), a solid biosorbent which was used for copper ion removal in aqueous. The esterification degree of substitution (DS) for KGM is a key parameter for performance of PKGM in copper ion adsorption. The DS, number average molecular weight (Mn), molecular weight distribution...
Mid-to-high molecular weight konjac glucomannan (MHKGM) powders with different molecular weights were prepared and purified from their enzymatic hydrolysis solutions. MHKGM powder yield was optimized with respect to substrate concentration, urea concentration, the number of alcohol washings, and drying temperature. Properties of MHKGM powder were characterized by SEC, FTIR, UV, XRD, rheological, and...
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