Mercury porosimeter as a means to measure mechanical properties of aerogels

Majling, J.; Komarneni, Sridhar; Fajnor, V. Š.

doi:10.1007/bf00486528

Cited by 15 publications

(15 citation statements)

References 6 publications

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“…6). This phenomenon had already been described for some aerogels (for example, based on cellulose acetate (Fischer, Rigacci, Pirard, Berthon-Fabry, & Achard, 2006;polyurethane (Pirard et al, 2003), silica (Majling, Komarneni, & Fajnor, 1995;Scherer, Smith, Qiu, & Anderson, 1995) and silicazirconia (Pirard, Blacher, Brouers, & Pirard, 1995)). A buckling theory for hyper-porous materials was developed by Pirard et al (1995) allowing building pore size distribution according to the equation correlating the size of the largest pores L remaining after compression at pressure P:…”

Section: Aerocellulose Morphology Density and Pore Size Distributionmentioning

confidence: 80%

Aerocellulose from cellulose–ionic liquid solutions: Preparation, properties and comparison with cellulose–NaOH and cellulose–NMMO routes

Sescousse¹,

Gavillon²,

Budtova³

2011

Carbohydrate Polymers

249

174

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Section: Aerocellulose Morphology Density and Pore Size Distributionmentioning

confidence: 80%

Aerocellulose from cellulose–ionic liquid solutions: Preparation, properties and comparison with cellulose–NaOH and cellulose–NMMO routes

Sescousse¹,

Gavillon²,

Budtova³

2011

Carbohydrate Polymers

249

174

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“…However, for our freeze-dried sample this is still much lower than the water content porosity (36%). In the dried sample, after correction for the unresolved pores and keeping in mind the possible artifacts produced by mercury injection such as pore collapse ( [13], [14]) the porosity is in reasonable agreement with the water-content-porosity. We interpret this discrepancy to be due to the size of the analyzed samples.…”

Section: Quantification Of Porositymentioning

confidence: 69%

Typology, morphology and connectivity of pore space in claystones from reference site for research using BIB, FIB and cryo-SEM methods

Desbois

Urai

Houben

et al. 2010

EPJ Web of Conferences

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Abstract. Detailed investigation of the morphology of the pore space in clay is a key factor in understanding the sealing capacity, coupled flows, capillary processes and associated deformation present in mudstones. Actually, the combination of ion milling tools (FIB and BIB), cryogenic techniques and SEM imaging offers a new alternative to study in-situ elusive microstructures in wet geomaterials and has the high potential to make a step change in our understanding of how fluids occur in pore space. By using this range of techniques, it is possible to quantify porosity, stabilize in-situ fluids in pore space, preserve the natural structures at nm-scale, produce high quality polished cross-sections for high resolution SEM imaging and reconstruct accurately microstructure networks in 3D by serial cross sectioning.

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“…According to Majling [25], mercury will not enter the pores of aerogels. Instead, the gels are isostatically compressed according to the "knee model" [26].…”

Section: Using a Mercury Porosimeter To Measure Mechanical Propertiesmentioning

confidence: 99%

“…Instead of completely sintering in a porosimeter as once expected [28], these gels yield a volume/pressure plot comprised of two portions: a linear beginning followed by a deviation an indication that increased pressures does lead to a stronger structure [25]. The linear portion can be used to calculate the bulk modulus in the elastic range according to the equation [29]: Majling [25] proposes that mercury porosimeters can evaluate mechanical behavior of aerogels.…”

Section: Using a Mercury Porosimeter To Measure Mechanical Propertiesmentioning

confidence: 99%

“…The linear portion can be used to calculate the bulk modulus in the elastic range according to the equation [29]: Majling [25] proposes that mercury porosimeters can evaluate mechanical behavior of aerogels. In this technique, mercury is forced under pressure into a capillary until the external force is balanced by the surface tension.…”

Section: Using a Mercury Porosimeter To Measure Mechanical Propertiesmentioning

confidence: 99%

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Comparing the Bulk Modulus of Aerogels Obtained Through Different Formulas

Aycock¹

2017

RDMS

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Aerogels are highly porous silica networks which lend themselves to several unique properties including low densities, small dielectric constants, and high impact absorption. While this list of attributes is impressive, these materials are extremely fragile. By using organic polymers as additives, researchers have discovered that gels can be made tougher while retaining many of their unique features. This paper compares the bulk moduli of pure silica aerogels to those containing collodion (nitro cellulose) by employing the novel technique of mercury porosimetry.

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Mercury porosimeter as a means to measure mechanical properties of aerogels

Cited by 15 publications

References 6 publications

Aerocellulose from cellulose–ionic liquid solutions: Preparation, properties and comparison with cellulose–NaOH and cellulose–NMMO routes

Aerocellulose from cellulose–ionic liquid solutions: Preparation, properties and comparison with cellulose–NaOH and cellulose–NMMO routes

Typology, morphology and connectivity of pore space in claystones from reference site for research using BIB, FIB and cryo-SEM methods

Comparing the Bulk Modulus of Aerogels Obtained Through Different Formulas

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