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A Mathematical Model of the Bulk Copolymerization of Styrene and Acrylonitrile in the Presence of Polystyrene ‐block‐ Polybutadiene
Author(s) -
Elizarrarás Daniel,
Morales Graciela,
de León Ramón Díaz,
Luciani Carla,
Estenoz Diana
Publication year - 2008
Publication title -
macromolecular theory and simulations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 56
eISSN - 1521-3919
pISSN - 1022-1344
DOI - 10.1002/mats.200800004
Subject(s) - copolymer , polybutadiene , acrylonitrile , styrene , polystyrene , polymer chemistry , grafting , molar mass , materials science , molar ratio , chemical engineering , chemistry , polymer , composite material , organic chemistry , engineering , catalysis
The bulk copolymerization of styrene and acrylonitrile in the presence of SB using BPO as initiator was investigated. Reactions were carried out at 80 °C with different initial SB concentrations. Global variables, such as conversion and cumulative grafting efficiency of SAN, were determined during the prepolymerization. The isolated non‐grafted SAN was also analyzed to determine its average molar masses and composition. A mathematical model was developed, and theoretical predictions were compared with experimental data. A good agreement between measurements and simulations was obtained from a heterogeneous model when BPO was evenly distributed between phases.