Effect of temperature and chain length on the viscosity and surface tension of binary systems of N,N-dimethylformamide with 1-octanol, 1-nonanol and 1-decanol

Mohammad, Abubaker A.; Alkhaldi, Khaled H.A.E.; AlTuwaim, Mohammad S.; Al-Jimaz, Adel S.

doi:10.1016/j.jct.2014.03.022

Cited by 21 publications

(11 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For x 2,2,4-trimethylpentane + (1 − x) 1-alkanols binary mixtures, we should expected negative excess surface tension values, and the bigger differences between the surface tension of pure components, the more negative excess surface tension should be. 44 As shown in Figure 9, the values of σ E at the constant composition of 2,2,4-trimethylpentane and at temper- ature T = 298.15 K were all negative and become more negative with the increase of 1-alkanol chain length. The curves of excess surface tension against composition at other temperature are similar to those at T = 298.15 K. Finally, the standard deviations of excess surface tensions between the experiment and calculated values are listed in Table 9.…”

Section: Resultsmentioning

confidence: 85%

“…For x 2,2,4-trimethylpentane + (1 – x ) 1-alkanols binary mixtures, we should expected negative excess surface tension values, and the bigger differences between the surface tension of pure components, the more negative excess surface tension should be . As shown in Figure , the values of σ E at the constant composition of 2,2,4-trimethylpentane and at temperature T = 298.15 K were all negative and become more negative with the increase of 1-alkanol chain length.…”

Section: Resultsmentioning

confidence: 85%

See 1 more Smart Citation

Surface Tension of Binary Mixtures of 2,2,4-Trimethylpentane +1-Alkanols from 298.15 to 323.15 K

Yue

Liu

2016

J. Chem. Eng. Data

View full text Add to dashboard Cite

Surface tension of binary systems of 2,2,4-trimethylpentane with 1-alkanols (ethanol, 1-propanol, 1-pentanol, 1-hexanol, or 1-heptanol) were measured at several different temperature and atmospheric pressure over the whole range of composition using the surface laser light scattering method, and the combined expanded uncertainties are less than 1%. The excess surface tensions, σ E , for these binary mixtures are calculated and fitted to the Redlich− Kister type equation, and the regression parameters and the standard deviations of the fitting are given. All of the σ E values are negative over the whole composition range for these systems and decrease with the temperature increasing. Surface tensions were also used to estimate surface entropy, S σ , and surface enthalpy, H σ . These results may be useful for the development of the hydrocarbon fuels.

show abstract

Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 85%

Surface Tension of Binary Mixtures of 2,2,4-Trimethylpentane +1-Alkanols from 298.15 to 323.15 K

Yue

Liu

2016

J. Chem. Eng. Data

View full text Add to dashboard Cite

show abstract

“…Nonanol was used for the study as it is a low-volatility solvent (boiling point 213 °C), mitigating evaporation. The physical properties of nonanol are indicated in Table . , Nonanol has been colored with Solvent Green 3 from Sigma-Aldrich at concentrations of 1.43 mg/mL. The volume of nonanol added to the inlet channel was ∼1.2 mL.…”

Section: Methodsmentioning

confidence: 99%

“…The physical properties of nonanol are indicated in Table 2. 36,37 Nonanol has been colored with Solvent Green 3 from Sigma-Aldrich at concentrations of 1.43 mg/mL. The volume of nonanol added to the inlet channel was ∼1.2 mL.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Open-Channel Capillary Trees and Capillary Pumping

2020

View full text Add to dashboard Cite

Velocity of capillary flow in closed or open channels decreases as the flow proceeds down the length of the channel, varying as the inverse of the square root of time or as the inverse of travel distance. In order to increase the flow rate-and extend the duration of the flow-capillary pumps have been designed by mimicking the pumping principle of paper or cotton fibers. These designs provide a larger volume available for the wicking of the liquids.In microsystems for biotechnology, different designs have been developed based on experimental observation. In the present manuscript, the mechanisms at the basis of capillary pumping are investigated using a theoretical model for the flow in an open-channel "capillary tree" (i.e., an ensemble of channels with bifurcations mimicking the shape of a tree). The model is checked against experiments. Rules for obtaining better designs of capillary pumps are proposedspecifically we find: (1) when using a capillary tree with identical channel cross-sectional areas throughout, it is possible to maintain nearly constant flow rates throughout the channel network, (2) flow rate can be increased at each branch point of a capillary tree by slightly decreasing the areas of the channel cross-section and decreasing the channel lengths at each level of ramification within the tree, and (3) higher order branching (trifurcations vs. bifurcations) amplify the flow rate effect. This work lays the foundation for increasing the flow rate in open microfluidic channels driven by capillary flow; we expect this to have broad impact across open microfluidics for biological and chemical applications such as cell culture, sample preparation, separations, and onchip reactions.

show abstract

“…The acetonitrile system is shelf-stable for long periods. Acetonitrile as a solvent also has many desirable properties for high-speed manufacturing such as low boiling point, low viscosity and low surface tension relative to the commonly used dimethylformamide (DMF) [214], dimethyl sulfoxide (DMSO) [154] and N-Methyl-2-pyrrolidone (NMP) [215] systems. Instead of using the toxic solvents, starch biopolymer exploits as a rheological modifier to tailor the viscosity of perovskite precursor solutions to obtain a stable ink for uniform perovskite thin films [216].…”

Section: Solar Ink-based Pscsmentioning

confidence: 99%

Perovskite Solar Cells for BIPV Application: A Review

et al. 2020

View full text Add to dashboard Cite

The rapid efficiency enhancement of perovskite solar cells (PSCs) make it a promising photovoltaic (PV) research, which has now drawn attention from industries and government organizations to invest for further development of PSC technology. PSC technology continuously develops into new and improved results. However, stability, toxicity, cost, material production and fabrication become the significant factors, which limits the expansion of PSCs. PSCs integration into a building in the form of building-integrated photovoltaic (BIPV) is one of the most holistic approaches to exploit it as a next-generation PV technology. Integration of high efficiency and semi-transparent PSC in BIPV is still not a well-established area. The purpose of this review is to get an overview of the relative scope of PSCs integration in the BIPV sector. This review demonstrates the benevolence of PSCs by stimulating energy conversion and its perspective and gradual evolution in terms of photovoltaic applications to address the challenge of increasing energy demand and their environmental impacts for BIPV adaptation. Understanding the critical impact regarding the materials and devices established portfolio for PSC integration BIPV are also discussed. In addition to highlighting the apparent advantages of using PSCs in terms of their demand, perspective and the limitations, challenges, new strategies of modification and relative scopes are also addressed in this review.

show abstract

Effect of temperature and chain length on the viscosity and surface tension of binary systems of N,N-dimethylformamide with 1-octanol, 1-nonanol and 1-decanol

Cited by 21 publications

References 28 publications

Surface Tension of Binary Mixtures of 2,2,4-Trimethylpentane +1-Alkanols from 298.15 to 323.15 K

Surface Tension of Binary Mixtures of 2,2,4-Trimethylpentane +1-Alkanols from 298.15 to 323.15 K

Open-Channel Capillary Trees and Capillary Pumping

Perovskite Solar Cells for BIPV Application: A Review

Contact Info

Product

Resources

About