Surface tension and interfacial tension of polyolefins and polyolefin blends

2021 ◽  
pp. 51885
Author(s):  
Ilhem Charfeddine ◽  
Jean‐Charles Majesté ◽  
Christian Carrot ◽  
Olivier Lhost
Keyword(s):  
Surface Tension ◽  
Interfacial Tension ◽  
Polyolefin Blends

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 

Surface Tension and Interfacial Tension Measurements in Water-Surfactant-Oil Systems Using Pendant Drop Technique

2013 ◽  
pp. 219-226 ◽  
Author(s):  
A. H. Cortés-Estrada ◽  
L. A. Ibarra-Bracamontes ◽  
A. Aguilar-Corona ◽  
G. Viramontes-Gamboa ◽  
G. Carbajal-De la Torre
Keyword(s):  
Surface Tension ◽  
Interfacial Tension ◽  
Pendant Drop ◽  
Drop Technique

scholarly journals A Novel Method for Improving Low-Temperature Flotation Performance of Nonpolar Oil in the Molybdenite Flotation

Minerals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 609 ◽  
Author(s):  
Wan ◽  
Qu ◽  
Li ◽  
He ◽  
Bu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Surface Tension ◽  
Low Temperature ◽  
Interfacial Tension ◽  
Field Intensity ◽  
Magnetic Field Intensity ◽  
Maximum Surface ◽  
Flotation Recovery ◽  
Flotation Performance ◽  
The Magnetic Field

Nonpolar hydrocarbon oil (NHO) is one of the most extensively used collectors in the flotation of molybdenite due to its excellent selectivity. However, NHO has low sensibility at pulp temperature. At low temperatures (<283 K), although more kerosene is used, the recovery of molybdenite flotation is still lower than at room temperature. In this study, magnetizing treatment, which is an efficient, low-cost, innovative, and environmentally friendly emulsification method, was used to improve the flotation performance of NHO in low-temperature molybdenite flotation. The test results showed that, compared with unmagnetized kerosene (UMK), the optimum dosage of magnetized kerosene (MK) could be reduced by 11% at 298 K. At the same dosage of kerosene, the flotation recovery of MK was 3% higher than UMK at 278 K. The surface tension measurement results showed that the surface tension of MK rose periodically as the magnetic field intensity increased, and there was a maximum surface tension within each period. Further, the magnetic field intensity had the maximum flotation recovery of molybdenite at the maximum surface tension of MK. Combined with the analysis based on the Girifalco–Good theory and the static drop volume method of interfacial tension, the interfacial tension of kerosene–water was shown to decrease with the increase of the surface tension of kerosene. This finding indicates that the dispersibility of kerosene in pulp could be improved by reducing the size of oil droplets, thereby improving the molybdenite flotation recovery of kerosene at low-temperature pulp. It is helpful to improve the flotation recovery of molybdenite using NHO as a collector for low-temperature pulp (<283 K).

EFFECT OF IONIC SIZES OF HALIDE ANIONS OF POTASSIUM SALTS ON SURFACE AND INTERFACIAL TENSIONS OF BENZENE AND WATER INTERFACES FOR MUTUAL MIXING

2009 ◽  
Vol 16 (05) ◽  
pp. 743-747 ◽  
Author(s):  
MAN SINGH ◽  
HIDEKI MATSUOKA
Keyword(s):  
Surface Tension ◽  
Interfacial Tension ◽  
Salt Water ◽  
Interaction Model ◽  
Potassium Fluoride ◽  
Potassium Salts ◽  
Interfacial Tensions ◽  
Biphasic Systems ◽  
Halide Salts ◽  
Potassium Halide

Surface tension (γ, mN/m) of potassium halide salts with water and interfacial tension (IFT) (±0.01 mN/m) of benzene interfaces with water are reported at 298.15 K temperature. The 0.1, 0.5 and 1.0 mol kg-1 potassium fluoride ( KF ), chloride ( KCl ), bromide ( KBr ) and potassium iodide ( KI ) solutions were studied. The KCl, KBr, KF and KI increased the surface tension by 5.2, 4.0, 3.1 and 3.0%, respectively, with salt–water interaction influence by anionic sizes. The surface tension of water from air–water to benzene–water interfaces is decreased by 51% due to the benzene–water mutual interaction with dipolar and π-conjugation. The KI, KF, KCl and KBr salts decrease the IFT by 63, 61, 61 and 56%, respectively, because of larger differences in sizes of the anions and the K + with individual salt. The KI developed stronger interactions with an induced potential of a large sized I - anion that held the water engaged and integrated the aqueous phase with higher interfacial tension. The dipolar and π-conjugation interaction model is proposed with biphasic systems.

Screening of Biosurfactant-Producing Bacteria

2013 ◽  
Vol 712-715 ◽  
pp. 515-519
Author(s):  
Jing Chun Wu ◽  
Liu Yang ◽  
Yang Zhao ◽  
Xiao Long Zhang
Keyword(s):  
Surface Tension ◽  
Interfacial Tension ◽  
Rotation Speed ◽  
Fermentation Medium ◽  
Orthogonal Test ◽  
Shaking Table ◽  
Optimum Conditions ◽  
Industrial Fermentation ◽  
Culture Flask ◽  
Metabolic Products

Firstly, two biosurfactant-producing bacteria named 1# and 2# was selected from 7 strains. Secondly, their growth and metabolism laws that the quantity of metabolic products would reach the highest and the value of surface tension would bottom out in the stationary phase of growth was found in the culture flask. Thirdly, the optimal condition for fermenting was chose by the orthogonal test which was used to study the effect of constituent of fermentation medium, culturing temperature and rotation speed of shaking table on the capability of metabolizing biosurfactants. Finally, compared the interfacial tension of strain 1# with that of strain 2# at the optimum conditions, strains 1# was chose for industrial fermentation.

Influence of New SiO2 Nanofluids on Surface Wettability and Interfacial Tension Behaviour between Oil-Water Interface in EOR Processes

2013 ◽  
Vol 26 ◽  
pp. 1-8 ◽  
Author(s):  
A. Amraei ◽  
Zahra Fakhroueian ◽  
Alireza Bahramian
Keyword(s):  
Surface Tension ◽  
Interfacial Tension ◽  
Oil Recovery ◽  
Ph Value ◽  
Pure Water ◽  
Contact Angles ◽  
Carbonate Reservoir ◽  
Reservoir Rock ◽  
Water Interface ◽  
Eor Processes

Fine SiO2 nanosphericals (2-5nm) and new various stable nanofluids including Tween 80, Span 80, Lauric alcohol-3EO, CTAB, SDS and K-Laurate surfactants in water or paraffin based solution were used as new SiO2 nanoproducts in oil recovery. These nanofluids can strongly change oil-wet carbonate reservoir rock to complete water-wet wettability and showed an excellent trend of surface tension (S.T) and IFT (interfacial tension) reduction in comparison with pure water and reference solutions. The CaCO3 plates reservoir was then aged for 2, 5 and 8 days into the 1, 3 and 8% of different concentrations of synthesized SiO2 nanofluids (effect of various concentrations via different aging time). Air/water and n-decane/water contact angles on oil-wet and clean carbonate rock aged in designed SiO2 nanofluids were measured and the pH value as a significant factor estimated. The interesting influence of microwave irradiation on surface tension and IFT including various SiO2 nanofluids was investigated after 12 min which some of the especial nanofluid concentrations showed successful reduction. Our findings indicated the important effect of temperature over decreasing of surface tension and IFT between oil and water interface including SiO2 nanofluids after annealing at 70°C. Therefore, this phenomenon can be significantly capable and valuable in applying of new technology in the fabrication of novel nanofluids in EOR processes and saving source of energy regarding to conventional production.

Characterization of Temperature Dependence of Interfacial Tension and Viscosity of Nanofluid

2008 ◽  
Author(s):  
S. M. Sohel Murshed ◽  
Nam-Trung Nguyen
Keyword(s):  
Surface Tension ◽  
Interfacial Tension ◽  
Temperature Dependence ◽  
Base Fluid ◽  
Deionized Water ◽  
Fluid Temperature ◽  
Interfacial Tensions ◽  
Increasing Temperature ◽  
Reduced Surface

Investigations on temperature dependence of surface tension, interfacial tension and viscosity a nanofluid are reported in this paper. Experimental results show that nanofluid having TiO2 nanoparticles (15 nm) in deionized water exhibit substantially smaller surface tension and oil-based interfacial tension than those of the base fluid (i.e. deionized water). These surface and interfacial tensions of this nanofluid were found to decrease almost linearly with increasing temperature. The Brownian motion of nanoparticles in base fluid was identified as a possible mechanism for reduced surface and interfacial tensions of nanofluid. The measured effective viscosity of nanofluid was found to be insignificantly higher than that of base fluid and it also decreases with increasing fluid temperature.

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