Acta Phys. -Chim. Sin. ›› 1996, Vol. 12 ›› Issue (07): 598-603.doi: 10.3866/PKU.WHXB19960705

• ARTICLE • Previous Articles     Next Articles

Investigation of the Thermal Decomposition Kinetics of Modified Carboxyl Hydroxypropyl Sesbania Gum

Wang zhu,Zhu Ling-Feng,Zhang Guo-Bao,Zhao Gen-Suo,Zhu Yan   

  1. The Henan Institute of Chemistry,Zhengzhou 450003
  • Received:1995-11-23 Revised:1996-02-01 Published:1996-07-15
  • Contact: Wang zhu

Abstract:

 The viscosities of hydroxypropyl Sesbania Gum, carboxyl hydroxypropyl Sesbania Gum and modified carboxyl hydroxypropyl Sesbania Gum at different temperatures and their pyrolysis kinetics have been studied. The kinetic parameters under air and N2 were calculated. The heat-stability of the modified carboxyl hydroxypropyl Sesbania Gum was carefully studied. The results indicate that the viscosity heat-stability and heatstability for pyrolysis of modified carboxyl hydroxypopyl Sesbania Gum surpassed those of hydroxypropyl and carboxylhydroxypropyl Sesbania Gum. The results also indicate that the mechanism of thermal decomposition can be described by the model of random initation.

Key words: Heat-stability, Kinetics of thermal decompositon, Polysaccharide, Pyrolysis