Modeling of the free-radical copolymerization kinetics with crosslinking of methyl methacrylate/ethylene glycol dimethacrylate up to high conversions and considering thermal effects



Document title: Modeling of the free-radical copolymerization kinetics with crosslinking of methyl methacrylate/ethylene glycol dimethacrylate up to high conversions and considering thermal effects
Journal: Revista de la Sociedad Química de México
Database: PERIÓDICA
System number: 000207383
ISSN: 0583-7693
Authors: 1
1
Institutions: 1Universidad Nacional Autónoma de México, Facultad de Química, México, Distrito Federal. México
Year:
Season: Ene-Mar
Volumen: 47
Number: 1
Pages: 22-33
Country: México
Language: Inglés
Document type: Artículo
Approach: Descriptivo
Spanish abstract Se usa un modelo matemático para copolimerización por radicales libres con entrecruzamiento para modelar el comportamiento del sistema de copolimerización metacrilato de metilo (MMA) / dimetacrilato de etilén glicol (EGDMA). Las predicciones del modelo se comparan contra datos experimentales de literatura, teniendo buena concordancia a bajas conversiones, y bajas concentraciones de agente de entrecruzamiento. Si se consideran en el modelo los efectos térmicos asociados a la polimerización con temperatura no uniforme en ampolletas de más de 0.5 mm de diámetro externo, la concordancia es aceptable aún a medias y altas conversiones, y a concentraciones medias de EGDMA
English abstract A mathematical model for the free radical copolymerization kinetics with crosslinking of vinyl / divinyl monomers is used to model the free-radical copolymerization of methyl methacrylate (MMA)/ethylene glycol dimethacrylate (EGDMA). Good agreement between model predictions and experimental data from the literature is obtained at low conversions, and low crosslinker concentrations. The agreement is also good at high conversions, and intermediate crosslinker concentrations, if thermal effects in ampoule copolymerization are incorporated into the model, through an energy balance. The thermal effects become important when ampoules greater than 0.5 mm in external diameter are used
Disciplines: Ingeniería
Keyword: Ingeniería química,
Entrecruzamiento,
Copolimerización,
Metil metacrilato,
Modelos matemáticos
Keyword: Engineering,
Chemical engineering,
Crosslinking,
Copolymerization,
Methyl methacrylate,
Mathematical models
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