Physical Properties (Density, Viscosity, Surface Tension, Interfacial Tension, and Contact Angle) of the System Isopropyl Alcohol + Cyclohexene + Water

2007 ◽  
Vol 52 (2) ◽  
pp. 548-552 ◽  
Author(s):  
Yahya M. Al-Wahaibi ◽  
Carlos A. Grattoni
Keyword(s):  
Surface Tension ◽  
Contact Angle ◽  
Interfacial Tension ◽  
Physical Properties ◽  
Isopropyl Alcohol

Measurements of the Contact Angles for Various Fluids Which Are Widely Used in the Oilfields to Improve Oil Recovery

2018 ◽  
Author(s):  
M. Elsharafi ◽  
K. Vidal ◽  
R. Thomas
Keyword(s):  
Surface Tension ◽  
Contact Angle ◽  
Interfacial Tension ◽  
Oil Recovery ◽  
Dynamic Contact Angle ◽  
Dynamic Contact ◽  
Contact Angles ◽  
Rock Face ◽  
Angle Measurements ◽  
Contact Angle Measurements

Contact angle measurements are important to determine surface and interfacial tension between solids and fluids. A ‘water-wet’ condition on the rock face is necessary in order to extract oil. In this research, the objectives are to determine the wettability (water-wet or oil-wet), analyze how different brine concentrations will affect the wettability, and study the effect of the temperature on the dynamic contact angle measurements. This will be carried out by using the Cahn Dynamic Contact Angle. Analyzer DCA 315 to measure the contact angle between different fluids such as surfactant, alkaline, and mineral oil. This instrument is also used to measure the surface properties such as surface tension, contact angle, and interfacial tension of solid and liquid samples by using the Wilhelmy technique. The work used different surfactant and oil mixed with different alkaline concentrations. Varying alkaline concentrations from 20ml to 1ml were used, whilst keeping the surfactant concentration constant at 50ml.. It was observed that contact angle measurements and surface tension increase with increased alkaline concentrations. Therefore, we can deduce that they are directly proportional. We noticed that changing certain values on the software affected our results. It was found that after calculating the density and inputting it into the CAHN software, more accurate readings for the surface tension were obtained. We anticipate that the surfactant and alkaline can change the surface tension of the solid surface. In our research, surfactant is desirable as it maintains a high surface tension even when alkaline percentage is increased.

Relationship Between Interfacial Shear Strength and Interfacial Tension of Silicone/Quartz Glass Fiber Composites

2011 ◽  
Vol 311-313 ◽  
pp. 54-58
Author(s):  
Chun Ping Hu ◽  
Bo Jiang ◽  
Bao Li Shi ◽  
Bing Wang ◽  
Li Liu ◽  
...  
Keyword(s):  
Surface Tension ◽  
Contact Angle ◽  
Shear Strength ◽  
Interfacial Tension ◽  
Glass Fiber ◽  
Interfacial Shear Strength ◽  
Van Der Waals ◽  
Fiber Composites ◽  
Interfacial Shear ◽  
Glass Fiber Composites

In this paper, the surface tension components of three silicone resins were determined with an advanced contact angle technique, which was composed of dynamic cycling contact angle and axisymmetric drop shape analysis (ADSA). The interfacial properties of three silicone/quartz glass fiber composites were measured through interfacial shear strength (IFSS) testing experiment. It was found that the Lifshitz–van der Waals component was the main surface tension component for all of the silicones. There is a perfect linear relationship between the interfacial tension and the IFSS. With the increase of the Lifshitz-van der Waals component, the interfacial tension and the IFSS of composites increased. Therefore, the Lifshitz-van der Waals component is the most important parameter for explaining the interfacial shear property of silicone/glass fiber composites.

Simulation of the Effects of the Physical Properties on Particle Formation of Pulsated Orifice Ejection Method (POEM)

2012 ◽  
Vol 509 ◽  
pp. 161-165
Author(s):  
Yi Fan Fu ◽  
Wei Dong ◽  
Ying Li ◽  
Yi Tan ◽  
Ming Hui Yi ◽  
...  
Keyword(s):  
Surface Tension ◽  
Contact Angle ◽  
Physical Properties ◽  
Molten Metal ◽  
Simulation Method ◽  
Particle Formation ◽  
Physical Parameters ◽  
Wide Range ◽  
Vibration Time ◽  
Ejection Method

A simulation method was used to study the effects of physical parameters, including the contact angle between molten metal and material of orifice, surface tension and viscosity on particle formation of POEM. Droplets can be stably obtained only when the contact angel is at least 90° or larger, as well as the surface tension is adequate. Within a wide range, viscosity has little effect on droplet formation; as the viscosity increases, necking time is postponed and vibration time is shortened.

scholarly journals Influence of the Grander Technology in the Physical Properties of the Self-Etch Adhesive System

2012 ◽  
Vol 3 (1) ◽  
pp. 1-5
Author(s):  
Daphne Câmara Barcellos ◽  
Carlos Rocha Gomes Torres ◽  
Sergio Eduardo de Paiva Gonçalves ◽  
Ivan Balducci ◽  
Tânia Mara da Silva ◽  
...  
Keyword(s):  
Surface Tension ◽  
Contact Angle ◽  
Physical Properties ◽  
Adhesive System ◽  
The Self ◽  
Physical Contact ◽  
Distilled Water ◽  
Mean Values ◽  
Aqueous Solvent ◽  
Self Etch

ABSTRACT Aim The objective of this study was to evaluate the influence of the Grander technology in reducing the surface tension and contact angle of self-etch adhesive system. Materials and methods Distilled water and Xeno III self-etch adhesive system (Dentsply) were modified by physical contact with the flexible unit Grander system to revitalize water, for 48 hours, resulting in four groups: Group CW-distilled water under normal conditions; Group CA-Xeno III adhesive system under normal conditions; Group GW-distilled water system modified by the Grander system; Group GA-Xeno III adhesive system modified by the Grander system. Surface tension and contact angle of the adhesive system and water in normal and Grandermodified conditions was measured with a goniometer. ANOVA and Tukey test were used to analyze the results (5%). Results and conclusion For surface tension, ANOVA showed p < 0.05, what indicated significant differences between the groups. The mean values (D/cm) for the groups were: CW-72.4 a; GW-69.45 b; GA: 31.17 c; CA-29.98 c. The results showed a significant reduction of surface tension for distilled water modified by Grander system. Grander technology did not interfere in the surface tension and contact angle physical properties of the Xeno III self-etch adhesive system. Clinical significance Grander technology is a method that revitalizes water by physical spatial restructuring of its molecules. The modify of an adhesive system, also a liquid with an aqueous solvent, can provide a reduction in surface tension and contact angle, increasing its wetness capacity and therefore ensuring a greater diffusibility. How to cite this article de Paiva Gonçalves SE, Matias DT, Barcellos DC, Lima Huhtala MFR, da Silva TM, Balducci I, Torres CRG. Influence of the Grander Technology in the Physical Properties of the Self-Etch Adhesive System. World J Dent 2012;3(1):1-5.

Physical properties of carbonatite magmas inferred from molten salt data, and application to extraction patterns from carbonatite–silicate magma chambers

1994 ◽  
Vol 131 (2) ◽  
pp. 145-153 ◽  
Author(s):  
J. A. Wolff
Keyword(s):  
Surface Tension ◽  
Interfacial Tension ◽  
Physical Properties ◽  
Molten Salt ◽  
Dynamic Behaviour ◽  
Magma Chambers ◽  
Silicate Magma ◽  
Silicate Liquids ◽  
Negatively Buoyant ◽  
Carbonatite Magma

AbstractLittle is known about the physical properties of carbonatite magmas, making it difficult to predict dynamic behaviour in carbonatite-bearing magmatic systems. The viscosity of calcium-rich carbonatite magma is approximately estimated from molten salt data to be 0.1 Pa s at 700–800°C, while density is estimated at 2.3−2.5 × 103 kg m−3. The corresponding values for natrocarbonatite are 0.01 Pa s and 2.0−2.1 × 103 kg m−3. It is thus possible for carbonatite to be negatively buoyant with respect to some silicate magmas. The surface tension in air of carbonatite magmas is estimated at 0.25 and 0.21 N m−1 for Ca-carbonatite and natrocarbonatite respectively. Knowledge of the interfacial tension between carbonatite and silicate liquids is critical before the formation and behaviour of silicate–carbonatite emulsions can be properly understood. Interfacial tension is constrained to < 0.09 N m−1 by the application of multiphase drop theory to experimentally-produced textures, and this value receives some support from geological observations. The mechanics of extraction from layered carbonatite-silicate magma chambers are briefly examined using the recommended density and viscosity values and the equations of Blake & Ivey (1986); the degree of eruptive mingling is dependent on which liquid was uppermost in the chamber.

scholarly journals Automated determination of interfacial tension and contact angle using computer vision for oil field applications

2021 ◽  
Author(s):  
Ankur Gupta ◽  
Anurag Pandey ◽  
Himanshu Kesarwani ◽  
Shivanjali Sharma ◽  
Amit Saxena
Keyword(s):  
Surface Tension ◽  
Contact Angle ◽  
Interfacial Tension ◽  
Oil Field ◽  
Pendant Drop ◽  
Fluid Characterization ◽  
Pendant Drop Method ◽  
Angle Calculation ◽  
Automated Determination

AbstractContact angle and surface tension are the two most widely used surface analysis approaches for reservoir fluid characterization in petroleum industries. The pendant drop method has among the most widely used techniques for the estimation of surface tension. The present work utilizes a python-based computer program to automatically determine interfacial tension (IFT) and contact angle from the pendant drop image acquired from a typical pendant drop apparatus. The proposed program uses python-based image processing libraries for the analysis of the pendant drop image. Also, the program is tested on images acquired from the standard solutions for the IFT and contact angle calculation showing promising results with a standard deviation of less than 1.7 mN/m.

Perbandingan Karakteristik Surfaktan Metil Ester Sulfonat dan Sodium Lauril Sulfonat sebagai Bahan Emulsifier

2016 ◽  
Vol 9 (2) ◽  
pp. 167-176
Author(s):  
Eldha Sampepana ◽  
Paluphy Eka Yustini ◽  
Aditya Rinaldi ◽  
Amiroh Amiroh
Keyword(s):  
Fatty Acids ◽  
Surface Tension ◽  
Methyl Ester ◽  
Interfacial Tension ◽  
Palm Oil ◽  
Emulsion Stability ◽  
Raw Material ◽  
Enzymatic Method

Surfactant which is used as raw emulsifier in an industry activity such as Sodium Lauryl Sulfonate is a raw material import, it is petroleum derivative which is not renewable and may cause pollution to the environment, because it is not degraded and are carcinogenic. The purpose of the research is to compare the characteristics of the Quaternary methyl ester sulfonat (MES) and Sodium Lauryl Sulfonat (SLS) as emulsifier. First, make the MES by filtering and eliminating fatty acids of palm oil, then process the MES with enzymatic method become methyl ester, then react it in sulfonation and metanolization process, and also neutralized with NaOH. Next, the MES experiment is compared with SLS and existing MES in the market. The results show that surfactants MES experiment has value hidrofil lipofil balance (HLB) interfacial tension and emulsion stability greater than MES in the market and SLS. And the surface tension of MES experiment is larger than MES in the market, but smaller compared to SLS.ABSTRAKSurfaktan yang digunakan sebagai bahan baku emulsifer dalam aktivitas suatu industri pada saat ini seperti Sodium Lauril Sulfonat  merupakan bahan baku import yang merupakan turunan dari minyak bumi, dengan sifat tidak dapat diperbaharui dan dapat menimbulkan pencemaran terhadap lingkungan karena tidak mudah terdegradasi serta bersifat karsinogenik. Metil ester sulfonat dari bahan minyak sawit merupakan surfaktan dengan sifat mudah terdegradasi yang perlu diketahui karakteristiknya. Penelitian bertujuan untuk membandingkan karakteristik surfaktan metil ester sulfonat (MES) dan Sodium Lauril Sulfonat (SLS) sebagai bahan emulsifier. Mula-mula dilakukan pembuatan MES dengan cara menyaring dan menghilangkan asam lemak minyak sawit terlebih dahulu, kemudian diolah menjadi metil ester secara enzimatis, lalu direaksikan secara sulfonasi dan metanolisis, serta dinetralkan dengan NaOH. Selanjutnya MES hasil percobaan dibandingkan dengan SLS dan MES yang ada dipasaran. Hasil penelitian menunjukkan bahwa surfaktan MES memiliki nilai hidrofil lipofil balance (HLB) tegangan antar muka dan stabilitas emulsi lebih besar apabila dibandingkan dengan MES di pasaran dan SLS, kecuali nilai stabilitas emulsi antara MES dan SLS sama. Dan tegangan permukaan MES hasil percobaan, lebih besar dibandingkan dengan MES dipasaran, dan lebih kecil dibandingkan dengan SLS. Kata kunci :   Metil  ester sulfonat, hidrofil lipofil balance, emulsifier, sodium lauril sulfonat , stabilitas emulsi 

scholarly journals Hydrophobic Modification of Graphene Oxide and Its Effect on the Corrosion Resistance of Silicone-Modified Epoxy Resin

Metals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 89
Author(s):  
Wei Yuan ◽  
Qian Hu ◽  
Jiao Zhang ◽  
Feng Huang ◽  
Jing Liu
Keyword(s):  
Contact Angle ◽  
Corrosion Resistance ◽  
Graphene Oxide ◽  
Physical Properties ◽  
Epoxy Resin ◽  
Electrochemical Impedance ◽  
Salt Spray ◽  
X Ray ◽  
Modified Graphene Oxide ◽  
Modified Epoxy

This study modified graphene oxide (GO) with hydrophilic octadecylamine (ODA) via covalent bonding to improve its dispersion in silicone-modified epoxy resin (SMER) coatings. The structural and physical properties of ODA-GO were characterized by field-emission scanning electron microscopy (FE-SEM), X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and contact angle tests. The ODA-GO composite materials were added to SMER coatings by physical mixing. FE-SEM, water absorption, and contact angle tests were used to evaluate the physical properties of the ODA-GO/SMER coatings, while salt spray, electrochemical impedance spectroscopy (EIS), and scanning Kelvin probe (SKP) methods were used to test the anticorrosive performance of ODA-GO/SMER composite coatings on Q235 steel substrates. It was found that ODA was successfully grafted onto the surfaces of GO. The resulting ODA-GO material exhibited good hydrophobicity and dispersion in SMER coatings. The anticorrosive properties of the ODA-GO/SMER coatings were significantly improved due to the increased interfacial adhesion between the nanosheets and SMER, lengthening of the corrosive solution diffusion path, and increased cathodic peeling resistance. The 1 wt.% ODA-GO/SMER coating provided the best corrosion resistance than SMER coatings with other amounts of ODA-GO (including no addition). After immersion in 3.5 wt.% NaCl solution for 28 days, the low-frequency end impedance value of the 1 wt.% ODA-GO/SMER coating remained high, at 6.2 × 108 Ω·cm2.

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