Water contact angle
Antifouling surfaces as a strategy to prevent microorganism’s adhesion on medical devices
... radioimmunoassay. Water contact angle results demonstrated that uncoated PU surfaces was more hydrophobic that sulfobetaine coated surfaces (78 º ± 3º, 60º ± 3º, ...
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Mat. Res. vol.15 número6
... measurements, water and 1-octanol uptake, contact angle, pure water flux, hydraulic permeability and hydraulic ...pure water flux changed significantly using ethanol (symmetric ...
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Mat. Res. vol.20 número2
... Polymer solutions of polysulfone (PSf) and methylcellulose (MC) in 1-methyl-2-pyrrolidone (NMP) were used to prepare ultrailtration membranes by the phase inversion technique via immersion precipitation. The efect of MC ...
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Polímeros vol.24 número3
... static water contact angles. As shown in Figure 8, the water contact angle of NR latex film was about ...the water contact angle of NR-g-HEMA latex film decreased ...
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Development of a piezoelectric biosensor based on PVDF films
... of water contact angle on the porous membranes should be performed and could be very helpful in the interpretation of results since it is known that higher hydrophilic porous membranes not only have ...
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Surface characteristics analysis of polypropylene treated by dielectric barrier discharge at atmospheric pressure
... The figure 4 shows that plasma treatment enhanced the PP hydrophilicity due to the introduction of polar oxygen-containing groups to the surface as evidenced by XPS analysis. Couple of minutes DBD treatment converted the ...
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Mat. Res. vol.16 número3
... the water contact ...larger water CA in all cases, when compared against the two sets of experiments (groups #1 and #2) without ...on water CA ...of water CA, there is a drawback for ...
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Mat. Res. vol.19 número2
... and water contact angle ...showing water contact angles close to values early reported for block copolymers composed by PS and PDMS segments, and comparable with the corresponding value ...
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Investigation of laser based processes to optimize eletrospun nanofiber nonwovens for tissue engineering
... A further decreasing of the velocity and the repetition rate to 100 mm/s and 50 kHz leads to smaller contact angles. More experiments were done varying different pa- rameters on the picosecond laser: power, ...
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Efeitos do plasma de baixa temperatura sobre os substratos esmalte e dentina
... Contact angle evaluation has been widely used to measure surface wettability of different ...Specifically, water contact angle is considered to be useful indication of the surface ...
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Influence of ethanol on dentin roughness, surface free energy, and interaction between AH Plus and root dentin
... A Ramé-hart goniometer (Ramé-hart Instrument Co., Netcong, USA) was used to measure the contact angle between dentin and the following solutions: water (polar), bromonaphthalene (nonpolar), and ...
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Unravelling the potential of nitric acid as a surface modifier for improving the hemocompatibility of metallocene polyethylene for blood contacting devices
... finally lead to the production of fibrin. Similarly, the activation of platelets by artificial surfaces occurs due to the contact of platelets with artificial surfaces, in terms of ligand expression (GP IIb/IIIa). ...
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O muco traqueobrônquico humano mantido em temperatura ambiente e suas propriedades físico-químicas
... However, the purulent sputum presented altera- tions not only in ciliary transportability; there was a statistically significant decrease in the contact angle values and an increase in displacement in the ...
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Polímeros vol.23 número3
... of hydrolysis of the matrix was varied in order: i) to vary the hydrophilic-hydrophobic balance the polymer matrix; and ii) to influence the degree of interaction between the filler and the matrix. The prepared ...
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Mat. Res. vol.6 número2
... groups are present at very low levels. Although the modifi- cation of polymer surfaces by corona discharge has already been studied, further research work is necessary in order to understand changes in the surface ...
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Cerâmica vol.61 número358
... A small heap of material remained on top of the graphite after the bulk of the matte had fallen off (Fig. 6, Matte-A 1250 °C). The matte-residue had a contact angle of 30° to 50°. At 1230 °C the volume of ...
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Parameterizing ice nucleation rates for cloud modeling using contact angle and activation energy derived from laboratory data
... by Str ¨om and Ohlsson (1998) who found that cirrus ice crystals in a region of heavy air traffic often contain soot-like particles. In a laboratory experiment, Gorbunov et al. (2001) showed that soot surface contains ...
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Mat. Res. vol.18 suppl.2
... the contact angle by the equipment. In this case, the drop of water added in the sample was completely absorbed by the same, occurring in this way, the thermodynamic equilibrium at the interface of ...
5
Rev. Esc. Minas vol.69 número2
... The API 5L X70 steel showed the highest corrosion potential, the highest polarization resistance, and the lowest corrosion current in the glutaraldehyde aqueous solution (Table 3). The glutar- aldehyde (C 5 H 8 O 2 ) has ...
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THE PERCEPTION, BELIEFS AND PRACTICES TOWARD GENITOURINARY SCHISTOSOMIASIS BY INHABITANTS OF SELECTED ENDEMIC AREAS (EDODELTA STATES) IN SOUTH-EASTERN NIGERIA
... collected through a syringe filter holder (Swinnex type) containing a Nytrel filter; 12 mm in diameter, with a pore size of 20 µm. The chamber was opened and the filter was removed with forceps, placed on a glass slide ...
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