Surface tension of solutions containing dicarboxylic acids with ammonium sulfate, d-glucose, or humic acid

Lee, Jae Young; Hildemann, Lynn M.

doi:10.1016/j.jaerosci.2013.06.004

Cited by 24 publications

(20 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This pattern is consistent with the measurements by Song et al (2016), who also observed an increase in viscosity with an increase in molar mass for a given RH based on studies with a series of saccharides. These observations are also consistent with prior studies that suggest a relationship between viscosity and molar mass (Hiemenz and Lodge, 2007;Pachaiyappan et al, 1967;Rothfuss and Petters, 2017), whilst prior studies have also shown a relationship between molar mass and glass transition temperature (Koop et al, 2011;Zobrist et al, 2008), and a relationship between molar mass and the bounce of particles off surfaces (Li et al, 2015;Saukko et al, 2012).…”

Section: Viscosity Of Saccharidessupporting

confidence: 91%

The effect of hydroxyl functional groups and molar mass on the viscosity of non-crystalline organic and organic–water particles

et al. 2017

View full text Add to dashboard Cite

Abstract. The viscosities of three polyols and three saccharides, all in the non-crystalline state, have been studied. Two of the polyols (2-methyl-1,4-butanediol and 1,2,3-butanetriol) were studied under dry conditions, the third (1,2,3,4-butanetetrol) was studied as a function of relative humidity (RH), including under dry conditions, and the saccharides (glucose, raffinose, and maltohexaose) were studied as a function of RH. The mean viscosities of the polyols under dry conditions range from 1.5  ×  10−1 to 3.7  ×  101 Pa s, with the highest viscosity being that of the tetrol. Using a combination of data determined experimentally here and literature data for alkanes, alcohols, and polyols with a C3 to C6 carbon backbone, we show (1) there is a near-linear relationship between log10 (viscosity) and the number of hydroxyl groups in the molecule, (2) that on average the addition of one OH group increases the viscosity by a factor of approximately 22 to 45, (3) the sensitivity of viscosity to the addition of one OH group is not a strong function of the number of OH functional groups already present in the molecule up to three OH groups, and (4) higher sensitivities are observed when the molecule has more than three OH groups. Viscosities reported here for 1,2,3,4-butanetetrol particles are lower than previously reported measurements using aerosol optical tweezers, and additional studies are required to resolve these discrepancies. For saccharide particles at 30 % RH, viscosity increases by approximately 2–5 orders of magnitude as molar mass increases from 180 to 342 g mol−1, and at 80 % RH, viscosity increases by approximately 4–5 orders of magnitude as molar mass increases from 180 to 991 g mol−1. These results suggest oligomerization of highly oxidized compounds in atmospheric secondary organic aerosol (SOA) could lead to large increases in viscosity, and may be at least partially responsible for the high viscosities observed in some SOA. Finally, two quantitative structure–property relationship models (Sastri and Rao, 1992; Marrero-Morejón and Pardillo-Fontdevila, 2000) were used to predict the viscosity of alkanes, alcohols, and polyols with a C3–C6 carbon backbone. Both models show reasonably good agreement with measured viscosities for the alkanes, alcohols, and polyols studied here except for the case of a hexol, the viscosity of which is underpredicted by 1–3 orders of magnitude by each of the models.

show abstract

Section: Viscosity Of Saccharidessupporting

confidence: 91%

The effect of hydroxyl functional groups and molar mass on the viscosity of non-crystalline organic and organic–water particles

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The line through the bulk data and the extrapolation of the line to supersaturated concentration conditions was obtained using eq 6 to calculate the predicted surface tension values. 27 Noteworthy, MA shows good overlap with bulk surface tension data from 75% to 88% RH, but there is a strong negative deviation below 75% RH ( Figure 5B). Above the saturation point, the surface tension is lower than the extrapolated prediction from bulk, and below 70% RH, it starts to plateau at ∼52 mN/m.…”

Section: ■ Results and Discussionmentioning

confidence: 83%

“…Equation 5 is suitable for surface-inactive compounds such as electrolyte salts and saccharides, whereas eq 6 is suitable for surface-active compounds such as dicarboxylic acids. 26,27 Overall, eqs 5 and 6 permit a direct comparison between single particle AFM and bulk solution surface tension data that are expressed as surface tension versus RH and solute mole percentage (see Supporting Information for all derivations). Figures S3 and S4 show HTDMA growth factor data and corresponding solute mole percentage determined using the approach described above as a function of RH for dicarboxylic acids, saccharides, and glucose/ NaCl 1:2 mass ratio mixture.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Direct Surface Tension Measurements of Individual Sub-Micrometer Particles Using Atomic Force Microscopy

Lee

Estillore²,

Morris

et al. 2017

J. Phys. Chem. A

View full text Add to dashboard Cite

Understanding the role of sea spray aerosol (SSA) on climate and the environment is of great interest due to their high number concentration throughout the Earth's atmosphere. Despite being of fundamental importance, direct surface tension measurements of SSA relevant sub-micrometer particles are rare, largely due to their extremely small volumes. Herein, atomic force microscopy (AFM) is used to directly measure the surface tension of individual sub-micrometer SSA particle mimics at ambient temperature and varying relative humidity (RH). Specifically, we probed both atmospherically relevant and fundamentally important model systems including electrolyte salts, dicarboxylic acids, and saccharides as single components and mixtures. Our results show that the single particle surface tension depends on RH or solute mole percentage and chemical composition. Moreover, for liquid droplets at and below 100 Pa s in viscosity, or at corresponding RH, we show good agreement between the AFM single particle and the bulk solution surface tension measurements at overlapping concentration ranges. Thus, direct surface tension measurements of individual particles using AFM is shown over a wide range of chemical systems as a function of RH, solute mole percentage, and viscosity than previously reported.

show abstract

“…While the two-component organic mixtures examined here are much simpler than real atmospheric aerosols, our results suggest that interactions between different organic components must be considered in order to accurately model aerosol hygroscopicity. Further measurements are needed, involving more diverse mixtures of organics and inorganics [39], to better understand and characterize these interactions between species.…”

Section: Discussionmentioning

confidence: 99%

Comparisons between Hygroscopic Measurements and UNIFAC Model Predictions for Dicarboxylic Organic Aerosol Mixtures

Lee

Hildemann

2013

Advances in Meteorology

Self Cite

View full text Add to dashboard Cite

Hygroscopic behavior was measured at 12°C over aqueous bulk solutions containing dicarboxylic acids, using a Baratron pressure transducer. Our experimental measurements of water activity for malonic acid solutions (0–10 mol/kg water) and glutaric acid solutions (0–5 mol/kg water) agreed to within 0.6% and 0.8% of the predictions using Peng’s modified UNIFAC model, respectively (except for the 10 mol/kg water value, which differed by 2%). However, for solutions containing mixtures of malonic/glutaric acids, malonic/succinic acids, and glutaric/succinic acids, the disagreements between the measurements and predictions using the ZSR model or Peng’s modified UNIFAC model are higher than those for the single-component cases. Measurements of the overall water vapor pressure for 50 : 50 molar mixtures of malonic/glutaric acids closely followed that for malonic acid alone. For mixtures of malonic/succinic acids and glutaric/succinic acids, the influence of a constant concentration of succinic acid on water uptake became more significant as the concentration of malonic acid or glutaric acid was increased.

show abstract

Surface tension of solutions containing dicarboxylic acids with ammonium sulfate, d-glucose, or humic acid

Cited by 24 publications

References 28 publications

The effect of hydroxyl functional groups and molar mass on the viscosity of non-crystalline organic and organic–water particles

The effect of hydroxyl functional groups and molar mass on the viscosity of non-crystalline organic and organic–water particles

Direct Surface Tension Measurements of Individual Sub-Micrometer Particles Using Atomic Force Microscopy

Comparisons between Hygroscopic Measurements and UNIFAC Model Predictions for Dicarboxylic Organic Aerosol Mixtures

Contact Info

Product

Resources

About