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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

At-Line Monitoring of Conversion in the Inverse Miniemulsion Polymerization of Acrylamide by Raman Spectroscopy

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Colman, Maria M. E. [1] ; Ambrogi, Paula M. N. [1] ; Serra, Cristiana S. R. [1] ; Araujo, Pedro H. H. [2] ; Sayer, Claudia [2] ; Giudici, Reinaldo [1]
Total Authors: 6
[1] Univ Sao Paulo, Dept Chem Engn, Escola Politecn, Av Prof Luciano Gualberto, Travessa 3, 380, BR-05508010 Sao Paulo, SP - Brazil
[2] Univ Fed Santa Catarina, Dept Chem Engn & Food Engn, BR-88040900 Florianopolis, SC - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Industrial & Engineering Chemistry Research; v. 55, n. 22, p. 6317-6324, JUN 8 2016.
Web of Science Citations: 1

This work studied the at-line Raman spectroscopy monitoring for the inverse miniemulsion polymerization of acrylamide. The conversion,. was determined from the Raman spectra without previous. calibration :using the peaks corresponding to -CH2- and C=C functional groups of acrylamide. Gravimetric data: was used to validate the results of conversion obtained with the Raman spectra,: Dynamic light scattering was used to measure the particle size. The results show that high energy in the homogenization step increases the surface area of the droplets and generates a lack of surfactant, which results in larger diameters. It is possible to make at-line monitoring of monorner conversion diredly from, the Raman spectra without using calibration models. The data obtained show an incomplete conversion that is also confirmed by gravimetric analysis. (AU)

FAPESP's process: 13/50218-2 - CEPEMA - Cooperative Center of Environmental Engineering
Grantee:Claudio Augusto Oller do Nascimento
Support type: Research Projects - Thematic Grants