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Several knowledge-based strategies for the efficient and consistent production of high performance emulsion polymers are discussed. These strategies involve the understanding of the effect of the process variables on polymer microstructure, as well as the development of quantitative polymer microstructure/product properties relationships. Case studies included tailoring adhesive properties, efficient...
Several knowledge-based strategies for the efficient and consistent production of high performance emulsion polymers are discussed. These strategies involve the understanding of the effect of the process variables on polymer microstructure, as well as the development of quantitative polymer microstructure/product properties relationships. Case studies included tailoring adhesive properties, efficient...
The efficiency of post-polymerization and devolatilization for residual monomer and VOC removal was investigated. It was found that mass transfer from aqueous phase to gas phase was the rate-determining step for devolatilization. The effect of the thermodynamic equilibrium coefficients on the latex devolatilization efficiency was studied. A strategy in which post-polymerization and devolatilization...
The efficiency of post-polymerization and devolatilization for residual monomer and VOC removal was investigated. It was found that mass transfer from aqueous phase to gas phase was the rate-determining step for devolatilization. The effect of the thermodynamic equilibrium coefficients on the latex devolatilization efficiency was studied. A strategy in which post-polymerization and devolatilization...
The main aspects of post-polymerization and devolatilization for cleaning industrial latexes were analyzed. Monomer partitioning was studied and we found that most of the monomer was portioned into the polymer particles, independently of its water solubility. The knowledge of the mechanisms involved in monomer removal by post-polymerization allowed the development of a mathematical model, which was...
Isothermal kinetic results were obtained for reactions between aromatic diamines with variable steric hindrance and two bismaleimide monomers, one with a structure hindered a from the two maleimide functions (BMEt) and the other not (BM). In the temperature range 120–200°C it was found that these two reactions competed in the mixtures. It was thus possible to establish an order of molten-state reactivity...
The solid state cross-linking reactions occurring after the thermal priming of different bismaleimide monomers with variable steric hindrance were examined. As a result of the insolubility of the materials, monitoring reaction mixtures over time requires the use of techniques adapted to characterizing solids. After defining system reactivities by differential scanning calorimetry, most of the results...
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