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›› 2004, Vol. 24 ›› Issue (3): 83-86.

• 研究报告 • Previous Articles     Next Articles

PREPARATION AND CHARACTERIZATION OF CROSSLINKED CARBOXYMETHYL-KONJAC-GLUCOMANNAN GRANULES

LUO Li-xin1,2, FENG Chang-gen2   

  1. 1. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China;2. School of Mechano-Electronics Engineering, Beijing Institute of Technology, Beijing 100081, China
  • Received:2003-07-07 Revised:1900-01-01 Online:2004-09-30 Published:2004-09-30

Abstract: Carboxymethyl-konjac-glucomannan granules(CMKGG) are prepared from konjac-glucomannan granules(KGG) and chloroacetic acid in alcohol solution.The crosslinked carboxymethyl-konjac-glucomannan granules((CCMKGG)) is then prepared.Factors influencing the reaction are discussed.CCMKGG may be used as a new adsorbent.From orthogonal experiments,the optimum conditions are:NaOH 20% of KGG,chloroacetic acid 10 times of KGG,temperature 55℃,reacting time 8 h with 30% alcohol solution,to obtain the product with good exchange capa-city.The results of IR,optical microscopy and SEM measurements show that CCMKGG are alveolate particles of homogeneous granularity,with cation interchange capacity 0.9538 mmol/g.CCMKGG are insoluble in water,and stable in acid and alkali.

Key words: konjac-glucomannan, carboxymethylation, adsorbent

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