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Memorias de investigación
Communications at congresses:
Hydrolysis Aqueous Sulfuric Acid of Poly (e-caprolactam) at High pH and at Moderately pH
Year:2011
Research Areas
  • Physics chemical and mathematical
Information
Abstract
The rate of hydrolysis of poly(e-caprolactam), in aqueous sulfuric acid as solvent and catalyst was studied at 343.2 K over the sulfuric acid concentration range of 4.0 to 14.0 M by considering as a measure of the hydrolysis the flow time measured by this viscometric technique. Hydrolysis rates were measured by two independent viscometer of 0.36 and 0.58 mm f ( capillary bore). Viscosity data have been analyzed by means of the relation between the macroscopic viscosity h and molecular weight M or number of hydrolyzable amide links (- NHCO-) considering that our macromolecule behaves either as a gaussian hydrodynamically permeable coil. The experimental results satisfy, even for high degrees of conversion, a first-order rate equation. Kinetic linear free energy linear relationships (LFERs) and Ho ( Hammett acidity function), HA ( amide acidity function) and aH2O ( water activity coefficient) functions are discussed.
International
Si
Congress
32nd Internacional Conference on Solution Chemistry
960
Place
La Grande-Motte, Montpellier (Francia)
Reviewers
Si
ISBN/ISSN
Start Date
28/08/2011
End Date
02/09/2011
From page
120
To page
121
Book of abstracts
Participants
  • Autor: Consolacion Manteca Diego (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Investigación en Ingeniería Marítima y Portuaria
  • Departamento: Tecnologías Especiales Aplicadas a la Aeronáutica
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