Research on Kinetics of Hydrolysis Preparation of Micro-Molecular Dextran

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.748.295

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 748Research on Kinetics of Hydrolysis Preparation of...

Research on Kinetics of Hydrolysis Preparation of Micro-Molecular Dextran

Abstract:

Micro-molecular dextran was prepared in sub-critical water and sub-critical Water/CO₂ by hydrolysis of dextran20. The obtained products were mainly characterized by GPC. The kinetics of hydrolysis of dextran20 has been studied in the temperature range of 423.15K-463.15K. It was found that the level of dextran20 hydrolysis in sub-critical water and sub-critical water/CO₂ was first level kinetics equation. The activation energy was also calculated. The results demonstrated that the molecular weight of micro-molecular dextran could be controlled.