Cellulose

, 16:1069 | Cite as

Approximate solution of the autocatalytic hydrolysis of cellulose

Article

Abstract

Depolymerization of cellulose in homogeneous acidic medium is analyzed on the basis of autocatalytic model of hydrolysis with a positive feedback of acid production from the degraded biopolymer. The normalized number of scissions per cellulose chain, S(t)/n° = 1 − C(t)/C0, follows a sigmoid behavior with reaction time t, and the cellulose concentration C(t) decreases exponentially with a linear and cubic time dependence, C(t) = C0exp[−at − bt3], where a and b are model parameters easier determined from data analysis.

Keywords

Cellulose Depolymerization Acid hydrolysis Ageing Autocatalytic kinetics 

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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  1. 1.Instituto de Química de São CarlosUniversidade de São PauloSão CarlosBrazil

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