Avaliação de Requisitos de Desempenho de Sistemas de Proteção Periférica (SPP) em Obras de Edificações

Peñaloza, Guillermina Andrea; Formoso, Carlos Torres; Saurin, Tarcísio Abreu

doi:10.26626/978-85-5953-027-8.2017c0005.p.109-132

Tecnologia Para Canteiro De Obras Sustentável 2017

DOI: 10.26626/978-85-5953-027-8.2017c0005.p.109-132

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Avaliação de Requisitos de Desempenho de Sistemas de Proteção Periférica (SPP) em Obras de Edificações

Guillermina Andrea Peñaloza¹,

Carlos Torres Formoso²,

Tarcísio Abreu Saurin³

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Cited by 2 publications

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Anodic Protection of Carbon Steel AISI 1006 Using the Binder of Undoped Polyaniline

Silva

Ferreira

et al. 2014

MSF

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The use of intrinsically conductive polymers such as polyaniline (PAni) has been presented as an alternative protective coating against corrosion, it intensifies the effect of anodic passivation and protection of the material. Given the difficulty in obtaining films of polyaniline in the oxidized form and driver in a self-supported and cohesive on the surface of metal substrates. Was held the undoped of the polymer, with the use of NH4OH solution to passing the PAni oxidized state and non-conducting polyaniline emeraldine base known as PAni EB. The complete mixture of PAni EB, organic solvent and plasticizer 4-chloro-3-methylphenol, allowed to obtain a resin. This was applied in AISI 1006 steel plates with the aid equipment Spin Coater. The film was characterized by thermal analysis TGA, where it was found that the coating is the result of the reaction components, predominantly the structure of PAni EB. The electrochemical tests of Cyclic Voltammetry and Potential Open Circuit were carried out in 2 molL-1H2SO4solution, which indicated the formation of redox couple polymer-metal, which provides the formation of passivating oxides, which allow the metal anodic protection against corrosion.

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Anodic Protection of Carbon Steel AISI 1006 Using the Binder of Undoped Polyaniline

Silva

Ferreira

et al. 2014

MSF

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Evaluation of the Cytotoxic Potential Chitosan/Hydroxyapatite Biocomposites

Leal

Nascimento

Fook

et al. 2014

MSF

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The incorporation of calcium phosphate in a polymer matrix for composites production combines the flexibility of the polymers with the resistance, hardness and bioactivity of the inorganic phase. This study aimed to obtain rigid biocomposites using hydroxyapatite as mineral phase and chitosan as a polymer binder for the application as a biomaterial. To obtain the biocomposites, hydroxyapatite was added under constant stirring to a solution of chitosan in order to satisfy a 70:30 (HA/CS) ratio. XRD results showed no significant change in the profile of hydroxyapatite with the incorporation of chitosan. The analysis of scanning electron microscopy (SEM) of the biocomposite HA/CS, indicated that there was an excellent dispersion of HA particles in the polymeric matrix. Infrared Spectroscopy with Fourier Transform (FTIR) analysis proved an existing interaction between chitosan and hydroxyapatite. The biocompatibility of biocomposites HA/CS was confirmed by the MTT assay. It is considered that the present biocomposites are a promising biomaterial for trabecular bone grafting

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Avaliação de Requisitos de Desempenho de Sistemas de Proteção Periférica (SPP) em Obras de Edificações

Cited by 2 publications

References 3 publications

Anodic Protection of Carbon Steel AISI 1006 Using the Binder of Undoped Polyaniline

Anodic Protection of Carbon Steel AISI 1006 Using the Binder of Undoped Polyaniline

Evaluation of the Cytotoxic Potential Chitosan/Hydroxyapatite Biocomposites

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