Copolimerization
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Estudo da copolimerização em mini emulsão de metacrilato de metila/metacrilato de etila / Study of methyl methacrylate/ethyl methacrylate in mini emulsion copolimerization
Reduction of volatile organic compounds (VOC) usage is a constant environmental demand. Polymeric aqueous emulsion of low surfactant contends produced from direct miniemulsion synthesis are used with advantages to replace organic solvents media as well as aqueous emulsions of high surfactant concentration. Water as continuous phase and organic monomers with
Publicado em: 2008
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2. Preparation and reative studies of catalytic systems based on zirconocenes, face to homo-and co-polimerization reation of etene / Preparação e estudo de reatividade de sistemas catalíticos, a base de zirconocenos, frente à reação de homo- e copolimerização de eteno
Catalytic systems based on zirconoces which are able to polymerize ethene have been studied. Structural modifications on the basic catalytic precursor, diphenylmethylidene(η5- cyclopentadienyl)(η5-9-fluorenyl) zirconium dichloride (5a) have been carried out. The catalytic precursors 5a and bis(para-fluorophenyl)methylidene(η5-cyclopentadienyl)
Publicado em: 2007
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3. Synthesis and determination of the electron affinity, ionization potential and energy of band prohibited of electroluminescent polymers / Síntese e determinação da afinidade eletrônica, potencial de ionização e energia de banda proibida de polímeros eletroluminescentes
In this work we describe the electrochemical and optical aspects of a series of electrochemically synthesized blue-electroluminescent conjugated polymers. The materials employed here comprised poly(p-phenylene) (PPP), poly(pyrro1e) (PPI), poly(3-methylthiophene) (P3MET), poly(p-pheny1ene-pyrrole) (CPPI) copolymer and poly(p-phenylene3methyIthiophene) (CP3MET
Publicado em: 2004
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4. Sintese de um controlador hibrido fuzzy-preditivo : aplicação para processos de polimerização
This work presents the development of a new predictive controller based in functional fuzzy models for polymerizatíon processes. These processes present a highly non-linear dynamic behavior, thus making difficult the development of controllers based on model as conventional predictive controllers. Two case studies were considered to analyse the performance
Publicado em: 2003