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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.)

Mathematical Modeling of Inverse Miniemulsion Polymerization of Acrylamide with an Oil-Soluble Initiator

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Author(s):
Torraga, Maria G. F. [1] ; Colman, Maria M. E. [2] ; Giudici, Reinaldo [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Escola Politecn, Dept Chem Engn, Av Prof Luciano Gualberto Travessa 3 380, Cidade U, BR-05308010 Sao Paulo, SP - Brazil
[2] Natl Univ Asuncion, Polytech Sch, Bio & Mat Lab, San Lorenzo 111421, SL - Paraguay
Total Affiliations: 2
Document type: Journal article
Source: Industrial & Engineering Chemistry Research; v. 60, n. 43, p. 15428-15442, NOV 3 2021.
Web of Science Citations: 0
Abstract

A model is proposed for the inverse miniemulsion polymerization of acrylamide (AAm) with an oil-soluble initiator. The model is based on the assumptions that (1) polymerization occurs in both the continuous phase and the polymer particles; (2) the radicals in the continuous phase with length that exceeds z(crit) can enter the monomer droplets; (3) a limited number of radicals can exist inside the polymer particles; (4) small radicals can exit the polymer particles; and (5) propagation is diffusion-controlled at high conversions. The model predictions of conversion, particle number, and the occurrence of a diffusion-controlled propagation reaction at high conversions were validated by comparison with experimental data for inverse miniemulsion polymerization, showing good agreement. The occurrence of diffusion-controlled propagation ({''}glass effect{''}) at high conversions is also discussed and additionally validated with literature data. (AU)

FAPESP's process: 15/50684-9 - Sustainable gas pathways for Brazil: from microcosm to macrocosm
Grantee:Reinaldo Giudici
Support Opportunities: Research Projects - Thematic Grants