Approximate solution of the autocatalytic hydrolysis of cellulose
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
20/10/2012
20/10/2012
2009
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Resumo |
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)/nA degrees A = 1 - C(t)/C(0), 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) = C(0)exp[-at - bt (3)], where a and b are model parameters easier determined from data analysis. |
Identificador |
CELLULOSE, v.16, n.6, p.1069-1073, 2009 0969-0239 http://producao.usp.br/handle/BDPI/31707 10.1007/s10570-009-9315-z |
Idioma(s) |
eng |
Publicador |
SPRINGER |
Relação |
Cellulose |
Direitos |
restrictedAccess Copyright SPRINGER |
Palavras-Chave | #Cellulose #Depolymerization #Acid hydrolysis #Ageing #Autocatalytic kinetics #SEALED VESSELS #DEGRADATION #KINETICS #PAPER #Materials Science, Paper & Wood #Materials Science, Textiles #Polymer Science |
Tipo |
article original article publishedVersion |