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- W2369530202 abstract "In this study,the hemicellulose,separated from P-RC APMP pulping spent liquor,was modified through etherifying reaction to prepare cationic quaternary ammonium type hemicelluloses with different degrees of substitution(DS).Some key factors influencing the modification were determined,including the dosages of etherifying agent and catalyst,reaction temperature and time,etc.Further,the cationic hemicellulose was used to improve the pulp strength.The results showed that cationic hemicellulose with a relatively high DS of 0.08 can be obtained when the optimum conditions are as follows: mass ratios of cationic etherifying agent to hemicellulose and catalyst to hemicellulose are 100% and 6%,respectively;the reaction temperature is 65℃ and the reaction time was 4 h.Further,the structures of unmodified and modified hemicellulose were characterized by FT-IR spectrum.The strength properties of hardwood kraft pulp,softwood kraft pulp and OCC can be improved significantly with the application of cationic hemicelluloses." @default.
- W2369530202 created "2016-06-24" @default.
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- W2369530202 date "2010-01-01" @default.
- W2369530202 modified "2023-09-28" @default.
- W2369530202 title "Modification and Application of Hemicellulose Separated From APMP Spent Liquor" @default.
- W2369530202 hasPublicationYear "2010" @default.
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