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Sedimentary rock porosity studied by electromagnetic techniques: nuclear magnetic resonance and dielectric permittivity
(Springer, 2014-11)
The present work involves a comprehensive experimental study of porosity and pore size distribution of sedimentary rocks, from oil fields formations, by means of two electromagnetic techniques, namely proton (1H) nuclear ...
Characterization and application of PZT/PU and graphite doped PZT/PU composite
(Elsevier B.V., 2002-09-01)
Composites, made of lead zirconate titanate (PZT) ceramic powder and castor oil-based polyurethane (PU), were prepared in the film form. The films were obtained in the thickness range 100-300 mum using up to 50/50 vol.% ...
Characterization and application of PZT/PU and graphite doped PZT/PU composite
(Elsevier B.V., 2002-09-01)
Composites, made of lead zirconate titanate (PZT) ceramic powder and castor oil-based polyurethane (PU), were prepared in the film form. The films were obtained in the thickness range 100-300 mum using up to 50/50 vol.% ...
Piezoelectric effect in composite polyurethane-ferroelectric ceramics
(1999-03-01)
Flexible and free-standing films of piezoelectric composites made up of lead zirconate titanate (PZT) ceramic powder dispersed in a castor oil-based polyurethane (PU) matrix were obtained by spin coating and characterized ...
Effect of spray-drying with organic solvents on the encapsulation, release and stability of fish oil
(Elsevier, 2018-10-15)
Fish-oil (FO) was encapsulated with hydroxypropylcelullose (HPC) by conventional spray-drying with water (FO-water) and solvent spray-drying with ethanol (FO-EtOH), methanol (FO-MeOH) and acetone (FO-Acet) in order to study ...
H-1 low- and high-field NMR study of the effects of plasma treatment on the oil and water fractions in crude heavy oil
(ELSEVIER SCI LTDOXFORD, 2012)
The chemical and physical properties of a Brazilian heavy oil submitted to plasma treatment were investigated by H-1 low-and high-field nuclear magnetic resonance (NMR) combined to the characterization of rheological ...
Dielectric properties of thin films of Babassu-based polymer and polyaniline blends
(2018-05-05)
In the present work, we describe the preparation and subsequent characterization of polymeric blends consisting of a monoglyceride (MG) synthesized from the Babassu's oil and the already commonly employed polyaniline (PAni). ...
Kinetics of the Transesterification of Castor Oil with Maleic Anhydride Using Conventional and Microwave Heating
(Springer, 2012-01)
The transesterification of castor oil with maleic / anhydride was studied using conventional and microwave heating. Reactions were followed by measuring the acid value and the reaction products were characterized by FTIR ...
Characterization and application of PZT/PU and graphite doped PZT/PU composite
(Elsevier B.V., 2014)