Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Andreas Sundblom"'
Autor:
Rafael Salomão, Leandro Fernandes, Andreas Sundblom, Peter Greenwood, Isabela Santos Martinatti, Paulo Roberto Teruo Tiba
Publikováno v:
Materials Research, Vol 27 (2024)
This study used an aqueous dispersion of silanized colloidal silica (SCS), whose particles’ surfaces were modified with an epoxysilane-based coupling agent, as the liquid medium and binder for MgO-Al2O3-containing suspensions. Fine calcined alumina
Externí odkaz:
https://doaj.org/article/c18b3589add0414d9b54a6c6eeb6cfbb
Autor:
Salomão, Rafael, Martinatti, Isabela S., Fernandes, Leandro, Andreas, Sundblom, Greenwood, Peter, Tiba, Paulo R.T.
Publikováno v:
In Open Ceramics September 2023 15
Publikováno v:
Day 2 Mon, February 20, 2023.
Controlling gas migration in the annular space during cement placement involves several challenges; especially in deep wells where temperature contrast leads to longer wait-on-cement (WOC) time, widening the window where fluids can migrate. Such exte
Publikováno v:
RSC advances. 9(23)
Temperature-dependent phase-separation, clouding, has been observed in suspensions of silica nanoparticles surface-functionalized with methyl-poly(ethylene glycol) silane. Interparticle interactions and conformational changes of the grafted poly(ethy
Autor:
Aleksandar Matic, Jan Skov Pedersen, Grethe Vestergaard Jensen, Andreas Sundblom, Anders Palmqvist, Jonas Nordström
Publikováno v:
Nordström, J, Sundblom, A, Jensen, G V, Pedersen, J S, Palmqvist, A & Matic, A 2013, ' Silica/alkali ratio dependence of the microscopic structure of sodium silicate solutions ', Journal of Colloid and Interface Science, vol. 397, pp. 9-17 . https://doi.org/10.1016/j.jcis.2013.01.048
Alkaline sodium silicate solutions with SiO2:Na2O molar ratios in the range 4-10 are known to be colloidally unstable manifested in phase separation or gelation. The mechanistic understanding of this instability is generally poor. To improve this sit
Publikováno v:
Sundblom, A, Oliveira, C L P D, Pedersen, J S & Palmqvist, A E C 2010, ' On the Formation Mechanism of Pluronic-Templated Mesostructured Silica ', Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, vol. 114, no. 8, pp. 3483-3492 . https://doi.org/10.1021/jp100087z
The synthesis of mesostructured silica formed at mildly acidic conditions using the nonionic surfactant Pluronic P123 has been studied with the aim of showing the importance of the degree of condensation of the silica source. The experimental investi
Publikováno v:
Langmuir. 26:1983-1990
The interaction between silica and poly(ethylene oxide) (PEO) in water may appear trivial and it is generally stated that hydrogen bonding is responsible for the attraction. However, a literature search shows that there is not a consensus with respec
Publikováno v:
Sundblom, A, Oliveira, C L P, Palmqvist, A E C & Pedersen, J S 2009, ' Modeling in Situ Small-Angle X-ray Scattering Measurements Following the Formation of Mesostructured Silica ', Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, vol. 113, pp. 7706-7713 .
A new model for analyzing in situ small-angle X-ray scattering measurements of the formation of hexagonal ordered mesoporous silica has been developed. It employs a factorization of the scattering intensity into contributions from the form factor and
Publikováno v:
Sundblom, A, Oliveira, C L P D, Pedersen, J S & Palmqvist, A E C 2011, ' Decoupling particle formation from intraparticle ordering in mesostructured silica colloids ', Microporous and Mesoporous Materials, vol. 145, no. 1-3, pp. 59-64 . https://doi.org/10.1016/j.micromeso.2011.04.025
A synthesis methodology that decouples the formation of silica particles from their internal mesoordering has been developed. This was possible by employing synthesis conditions that combine fast nucleation and growth of particles with slow silica co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::319270d3f6a54eecdb9667d7568d23ab
https://pure.au.dk/portal/da/publications/decoupling-particle-formation-from-intraparticle-ordering-in-mesostructured-silica-colloids(dd0ea59f-55af-4694-88a0-343dc59f44d8).html
https://pure.au.dk/portal/da/publications/decoupling-particle-formation-from-intraparticle-ordering-in-mesostructured-silica-colloids(dd0ea59f-55af-4694-88a0-343dc59f44d8).html
Publikováno v:
Langmuir; Feb2010, Vol. 26 Issue 3, p1983-1990, 8p