Alphabetical List‎ > ‎G‎ > ‎

Fernando Galembeck

Fernando Galembeck, Brazilian physical chemist (São Paulo 21 January 1943 -



Discovered osmosedimentation effect (1977), centrifugal ultrafiltration, pressure-driven pervaporation (1990) and tangential electrophoretic depolarization   

Discovered that atmospheric water can acquire electric charges and transfer them to other solid and liquid materials, a phenomenon known as higroelectricity (2010)

Described a capacitor that loads spontaneously when exposed to moist air

Demonstrated that electrization in dielectric materials occurs faster when the atmosphere is moist

Proposed that atmosphere is a charge reservoir for dielectric materials 

Demonstrated that the friction between dielectric materials poses fixed and stable patterns of electric charges with a non-uniform distribution in the two sides of material and in some cases the main component of friction is only triboelectrization

Proposed a new model of electrization of dielectrics

Demonstrated that water vapor adsorption on insulating material surfaces or isolated metal leads to accumulation of electric charges on them  

Suggested new types of tensioactive chemicals

Proposed the development of new polymeric nanocomposites and microcomposites

Discovered that latexes present complex electric nanostructures that permitted the ionic amelioration of polymers

Demonstrated that one could create submicrometric structures in a silica surface  deposited in silicon monocrystal

Demonstrated the role of electrostatic adhesion in nanocomposites formation



SOME CONTRIBUTIONS/BIBLIOGRAPHY

With L.C. Soares, S. Bertazzo, T. Burgo & V. Baldim. A new mechanism for the electrostatic charge build-up and dissipation in dielectrics. J. Braz Chem Soc 19:277-286, 2008.

With R.F. Gouveia & C.A.R. Costa. Electrostatic patterning of a silica surface: a new model for charge build-up on a dielectric solid. J. Phys. Chem. B 109(10):4631-7 (2005)

With I.R. Jankov, R.N. Szente, I.D. Goldman, M.N. Carreno et al. Modification of electrode materials for plasma torches. Surf Coat Techn 200(1-4):254-7 (2005)

With C.A.R. Costa, E. Rodovanovic, E. Teixeira-Neto & M.C. Gonçalves. A procedure for SPM tip recovery. Acta Microsc 12(1);71-75 (2003)

With A.O. Cardoso. A new factor in colloidal stability: latex stabilization by polymer swelling solvents. J. Coll. Interf Sci 182(2):614-6 (1996)

With R.A. Costa & L. Coltro. A staining procedure for the detection of oxidized sites in polyolefins. Die Angew Makromol Chem 180:85-94 (1990)

With S.P. Nunes & P. Alves Junior. A low-cost, small-scale polymer mixer. J. Chem Educ  67 (11):982-3 (1990)

With M. do C. Gonçalves, D. Windmoller & N.M. Erismann. Pressure-driven pervaporation. Separ Sci Techn 25(9-10):1079-85 (1990)

With M.U. Kleinke & O. Teschke. New porous PTFE separator for high-temperature water electrolysers. Internat J. Hydrogen Energy 13(6):341-3 (1988)

With S.P. Nunes & A.A. Winkler-Hechenleitner. A new centrifugal ultrafiltration device. Separ Sci Techn 21(8):823-30 (1986)

With A.T.N. Pires. Osmosedimentation methods: preparative and analytical apliccations. Separ Purif Methods 15:97-126 (1986)  

With C.L. Cesar, C.A.S. Lima, N.F. Leite, H. Vargas & A.F. Rubira.. Optical absorption measurements in a new composite material by combined photoacoustic and beam transmission techniques. J. Appl. Phys 57(9):4431-6 (1985)

With O. Teschke. A new type of separator for high-temperature water electrolyzers. J. Electroch. Soc 130(1):33-6 (1983)

With C.C. Ghizoni, C.A. Ribeiro, H. Vargas & L.C.M. Miranda. Characterization of a new composite material Fe2O3 - impregnated poly (tetrafluoroethylene). Particle size determination and photoacoustic spectroscopy. J. Appl. Polymer Science 25(7):1427-33, 1980 



METHODS/PATENTS 

With S.P. Nunes. Dispositivo de ultrafiltração. 8.404.660 (1984)

Ultrafiltração em múltiplo estágio (1984)

With E.C. Pinheiro & P.P. Abreu Filho. Processo de fabricação de materiais magnéticos (1985)

Processo de fabricação de materiais para despoluição de gases em escapamentos de autos. (1988)

With E.C.O. Lima. Processo de obtenção de pigmentos brancos (PI: 9104581-9). 1991

Processo de obtenção de partículas inorgânicas hidrofóbicas (PI: 9301191-1). 1993

With M.M. Beppu. Processo de síntese de partículas ocas de fosfato de alumínio (PI: 9400746-2), 1994.

With E.F. de Souza. Processo de obtenção de partículas ocas de um metafosfato duplo de alumínio e cálcio em látex poliméricos (PI: 9500522-6) 1995

With E.F. de Souza. Processo de síntese de partículas de fosfatos e polifosfatos de ferro (III), simples, duplos ou múltiplos, não cristalinos (PI: 9700586-0) 1997

With E.F. de Souza & M.C.V. M. da Silva. Processo de preparação de adesivos com alta resistência à umidade, obtidos a partir de látex poliméricos e polifosfatos de cátions polivalentes, e adesivos assim obtidos (PI: 9804318-8), 1998

With M.M. Rippel. Processo de fabricação de adesivo para superfícies de vidros, cerâmicas, alvenarias e plásticos à base de látex de borracha natural modificado por polifosfato (PI: 0102823-5). 2001

With M. Braga. Processo de coramento de látex para produção de poliestireno colorido (PI: 0201940-0), 2002

With M.F.B. Souza. Fabricação triboquímica de nanocompósitos híbridos de poliester com argilas (PI: 0201487-4), 2002

Process to obtain an intercalated or exfoliated polyester with clay hybrid nanocomposities materials (European Patent Office - PI PCT/BR 03/00142). 2003

With M.M. Rippel, M.M. Murakami & L.F. Valadares. Produção de nanocompósitos de termoplásticos ou elastômeros com argilas intercaladas ou esfoliadas, a partir de latéxes (PI: 301.193-3), 2003

With J. de Brito. Produto e processo de fabricação de um pigmento branco baseado na síntese de partículas ocas de ortofosfato ou polifosfato de alumínio (PI: 0403713-8), 2004

With M.C.V.M. Silva. Processo de fabricação de adesivos para metais, constituídos por resinas poliméricas portadoras de nanodomínios diferenciados elétrica e mecanicamente, adesivos assim obtidos e seu processo de aplicação (PI: 0404738-9), 2004

With M.C.V.M. Silva. Fabrication of hot melt metal adhesives based on solid resins comprises emulsion polymerization of acrylic, styrene, vinyl and diene monomers, for hot application (BR200404738-A), 2004

With M.M. Murakami, J.P. Santos & H.C. Schumacher. Método de preparação de látexes catiônicos a partir de látexes aniônicos (PI0502764-0) 2005

With J. de Brito. Aluminum phosphate or polyphosphate particles for use as pigments in paints and method of making same (U.S. Pat. Appl. Publ. (2006), US 2006045831 A1 20060302 Application: US 2005-215312 20050830. Priority: BR 2004-3713 20040830).

With J. de Brito & D.B.J.G. Fernando. Amorphous aluminum phosphate or polyphosphate, useful in paint, and as ingredient in varnish, printing ink and plastic has specified bulk density, and phosphorus to aluminum mole ratio (US2006045831-A1) 2006

With J. de Brito. Aluminum phosphate, polyphosphate and metaphosphate particles and their use as pigments in paints and method of making same. 20060045831 (2006)

With J. de Brito. Aluminum phosphate, polyphosphate and metaphosphate particles and their use as pigments in paints and method of making same. 20060211798 (2006)

With J. de Brito. Aluminum phosphate, polyphosphate and metaphosphate particles and their use as pigments in paints and method of making same. 20080038556 (2006)

With J. de Brito. Aluminum phosphate or polyphosphate particles for use as pigments in paints and method of making same. 20060045831 (2006)

With J. de Brito, R. Rosseto & A.M.A. dos Santos. Making chemical composition comprising amorphous aluminum phosphate, comprises combining aluminum phosphate with sodium aluminate, and combining the obtained amorphous aluminum phosphate with binding polymer to form chemical composition . US2011301272-A1 (2007)

With J. de Brito, R. Rosseto & A.M.A. dos Santos. Making white pigment, e.g. used in home paints, or vehicle paints, by reacting phosphoric acid, aluminum hydroxide, sodium aluminate, and amorphous aluminum phosphate or polyphosphate (US2008038556-A1), 2008

With J. de Brito, R. Rosseto & A.M.A. dos Santos. Preparation of white amorphous aluminum phosphate or polyphosphate-based pigment, e.g. for use in paints as titanium oxide substitute, involves reacting phosphoric acid and aluminum hydroxide, and neutralizing with sodium aluminate (WO2008017135-A1) 2008

With J. de Brito, R. Rosseto & A.M.A. dos Santos. Preparation of aluminum phosphate or polyphosphate particles. 20080038556 (2008)

With H.C. Schumacher & M.M. Rippel. Process for obtaining solid nanocomposite, useful in e.g. gaskets and sealants, comprises an electrolytic coagulation of polymer latex and an aqueous dispersion containing non-modified solid layered silicate. WO2009015453-A2 (2009)

With M. Braga & C.A.S. Barbosa. Slurry, useful in paint, varnish, printing ink, paper and plastic, comprises amorphous aluminum phosphate particles and a dispersant e.g. borate dispersant or silicate dispersant. WO2009100510-A2 (2009)

Making coating composition, useful in e.g. paints, comprises combining phosphorous source, aluminum sulfate and alkaline solution, drying the obtained precipitate, and combining the obtained aluminum phosphate powder with binding polymer. US2010292382-A1 (2010)

Electrifying materials used for charging batteries and capacitors, power distribution networks, electric motor and power control circuits, involves keeping material electrically insulated from ground or other objects connect to earth. WO2011072348-A1 (2010)

With M. Braga & R.E. Foscante. Anticorrosive coating composition, useful for forming primer coating and mid-coating or top-coating, comprises a binding polymer, aluminum phosphate e.g. amorphous aluminum phosphate, dispersed within the binding polymer. US2012094130-A1 (2011)