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Multicriteria optimization of production conditions for a new phthalate-free PVC plasticizer
Oscar Yesid Suarez Palacios,Paulo Cesar Narvaez Rincon,Jean-Pierre Corriou,Mauricio Camargo Pardo,Christian Fonteix 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.4
Glycerol tri-isovalerate presents promising performance as new PVC plasticizer. To establish the conditions under which it must be produced on an industrial scale, a model of the process was developed and adjusted using experimental results and parametric identification with Fisher’s maximum likelihood method. Tests were designed to study the influence of temperature, pressure, molar ratio and catalyst concentration on conversion. Also, a multiobjective optimization of the production conditions, in Pareto’s sense, was performed using an evolutionary algorithm. Furthermore, a decision aid tool based on two different functions was utilized with the technique MACBETH to select the conditions for scale-up.
Eco-Friendly Manufacturing of Nano-TiO2 Coated Cotton Textile with Multifunctional Properties
Mirele Horsth de Paiva Teixeira,Luís Antônio Lourenço,Wagner Artifon,Celso Junior de Castro Vieira,Sergio Yesid Gómez González,Dachamir Hotza 한국섬유공학회 2020 Fibers and polymers Vol.21 No.1
In this work, multifunctional cotton fabrics were developed by immobilizing TiO2 nanoparticles (TiO2-NPs) usingan eco-friendly bath through a highly-scalable technique. The effects of TiO2-NPs, cross-linking agent, catalyst and curingtemperatures were assessed by analysis of variance and surface response methodology. The results disclose an excellentperformance of treated textiles for various applications: flame-retardant (char content enhanced by 1000 %), photocatalyticdecontamination (>90 % of contaminant abatement and feasibility for multiple reuses), self-cleaning of intense stains (up to80 % of stain vanishing), bacterial inhibition without TiO2 UV-activation (≈25 % of bacteria growth reduction). Moreover,those properties were durable for at least five domestic laundering cycles.