The Preparation of Micro-Molecular Dextran in Sub-Critical Water/CO2

Shu Qiong Liao; Xiao Yu Peng; Xue Wang Zhang; Kelin Huang; Ben Wang; Ji Wen Gan; Qing Ruo Xie; Wei Jian Nong; Ke Xian Li

doi:10.4028/www.scientific.net/AMR.712-715.502

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The Preparation of Micro-Molecular Dextran in Sub-Critical Water/CO₂

Abstract:

Micro-molecular dextran was prepared in sub-critical water/CO₂ by hydrolysis of dextran20. The obtained products were mainly characterized by FT-IR and GPC. Furthermore, the reaction temperature, reaction time, reaction pressure, solid-liquid radio and stirring speed were systematically investigated during the work. The optimum reaction conditions are as follows: the reaction temperature was 160°C; the reaction time was 60 min; the reaction pressure was 2.5MPa; the solid-liquid ratio was 0.6 and the stirring speed was 300r/min.