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High-temperature degradation of polyacrylic acid in aqueous solution (1996)

Gurkaynak, A. ; Tubert, F. ; Yang, J. ; [et al.]

Bognor Regis [u.a.] : Wiley-Blackwell

Journal of Polymer Science Part A: Polymer Chemistry 34 (1996), S. 349-355

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ISSN: 0887-624X

Keywords: polymer ; polyelectrolyte ; degradation ; aqueous ; decarboxylation ; Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Poly(acrylic acid) (PAA) was decarboxylated in aqueous solution as a function of pH and ionic strength in the temperature range 100-350°C. Degradation kinetics were first order with respect to acid functionality. The rate of decarboxylation at high pH (Eα = 51.1 kcal/mol) was much slower than that at low pH (Eα = 20.3 kcal/mol). At intermediate pH, the reactivity was found to depend on the degree of dissociation of PAA as a functions of ionic strength, pH, and temperature. No monomer was observed in the reaction product. © 1996 John Wiley & Sons, Inc.

Additional Material: 5 Ill.

Type of Medium: Electronic Resource

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