Surface Thermodynamic Properties of Micas and Related Layer Silicate Minerals

Giese, R. F.; Wu, W.; Oss, Carel J. van

doi:10.1080/01932699808913214

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…Tautomerization of dopaquinone to Δ‐dopa needs a Lewis base to extract the acidic proton on the α‐C (Figure 1e–f) 6. In our experiments, acetate and phosphate buffers, certain mfp‐3 side‐chains, and the mica surface13 itself could act as Lewis bases to catalyze the rearrangement. UV–vis spectra were performed to test whether the dopaquinone to Δ‐dopa tautomerization occurs in bulk mfp‐3 solution upon dopa oxidation.…”

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confidence: 75%

“…The greater susceptibility of mfp‐3 to oxidation in the SFA compared with bulk solution is intriguing and worthy of greater scrutiny. Perhaps the confinement of mfp‐3 between mica surfaces during an SFA experiment enhances its oxidation kinetics;14 it is worth recalling in this regard that mica is an excellent Lewis base 13. Another possibility is mechanochemical, i.e., a mechanical deformation of mfp‐3 enhances dopa oxidation.…”

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confidence: 99%

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Effects of Interfacial Redox in Mussel Adhesive Protein Films on Mica

et al. 2011

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Effects of Interfacial Redox in Mussel Adhesive Protein Films on Mica

et al. 2011

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“…For the case of PS nanocomposites, Vaia and Giannelis have demonstrated that the weak acid−base interactions between the polymer and silicate, resulting from the polar character of the silicates (even after organic modification) and the weak polar components of interfacial energy of PS (dispersive solubility parameter, δ d = 18.1 MPa 1/2 , and polar solubility parameter, δ p = 1.1 MPa 1/2 ), leads to the development of intercalated nanocomposites. PVME, on the other hand, is significantly more polar.…”

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confidence: 99%

Phase Behavior of PS−PVME Nanocomposites

et al. 2003

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The influence of nanometer thick, highly anisotropic organically modified layered silicate (montmorillonite) on the phase behavior of deuterated polystyrene (dPS) and poly(vinyl methyl ether) (PVME) is investigated by a combination of small-angle neutron scattering (SANS) and a two-dimensional combinatorial method based on light scattering and corroborated by single-point static cloud-point light scattering. The presence of layered silicates up to a volume fraction of 0.04 is found to leave the phase diagram essentially unchanged, with the values of the Flory−Huggins χ parameter at high temperatures being nearly independent of added silicate for blends with layered silicates up to a volume fraction of 0.008. These surprising results, in light of the significantly higher polarity of PVME in comparison to PS, allows us to investigate the influence of such layered silicates on the kinetics and morphology of phase separation in polymer blends as detailed in a previous paper.

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Polymer–Clay Nanocomposites

Kamal

Uribe-Calderón

2012

Wiley Encyclopedia of Composites

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The incorporation of nanoparticles in polymer matrices leads to improvements in several physical properties. As a result, nanocomposites have the potential to be used in various fields such as medical devices, automotive and aerospace applications, packaging, and building materials. This article attempts to describe the various types of nanoparticles and polymeric systems that have been involved in nanocomposite production. Particular emphasis is placed on polymer‐clay nanocomposites, their properties, and the issues related to their production. Thermoplastic, thermoset, biopolymer, and rubber matrices are considered. The effects of nanoclay particles on the physical properties is reported, with due consideration to rheology, mechanical, thermal, barrier and electrical properties, and crystalline morphology. Thermodynamic aspects influencing nanocomposite synthesis, deagglomeration‐delamination of nanoclay and surface energy considerations are discussed. Successful nanocomposite synthesis leading to desirable performance characteristics requires uniform nanoparticle distribution and acceptable levels of exfoliation and/or intercalation of clay, in addition to good interfacial adhesion at the polymer‐clay interface.

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Surface Thermodynamic Properties of Micas and Related Layer Silicate Minerals

Cited by 5 publications

References 4 publications

Effects of Interfacial Redox in Mussel Adhesive Protein Films on Mica

Effects of Interfacial Redox in Mussel Adhesive Protein Films on Mica

Phase Behavior of PS−PVME Nanocomposites

Polymer–Clay Nanocomposites

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