Semibatch Aqueous-Solution Polymerization of Acrylic Acid: Simultaneous Control of Molar Masses and Reaction Temperature

The semibatch polymerization of non-ionized acrylic acid (AA) was investigated with the aim of producing poly(acrylic acid) (PAA) of controlled molar masses, at complete AA conversion, and under safe conditions. The proposed strategy mainly consists in feeding the AA at a constant rate along the reaction, for simultaneously controlling polymerization rate and molar masses. PAA of intermediate Mn, in the range 1x104–2x105 g .mol-1, was produced through an adequate selection of both the initiator concentration and the AA flow rate. In all experimental conditions, backbiting reactions were confirmed by 13C NMR. A simple mathematical model was developed to help interpret the experimental results.

Palabras clave: Control of Molar Masses , Molar Mass Distribution , Polyacrylic Acid , Radical Polymerization

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Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)

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URI: http://hdl.handle.net/11336/13354

URL: http://onlinelibrary.wiley.com/doi/10.1002/mren.201000059/abstract

DOI: http://dx.doi.org/10.1002/mren.201000059

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Articulos(INTEC)
Articulos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)

Citación

Minari, Roque Javier; Caceres, Gerardo; Mandelli, Paola; Yossen, Mariana Matilde; González Sierra, Manuel; et al.; Semibatch Aqueous-Solution Polymerization of Acrylic Acid: Simultaneous Control of Molar Masses and Reaction Temperature; Wiley Vch Verlag; Macromolecular Reaction Engineering; 5; 5-6; 6-2011; 223-231

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