Migration and precipitation of soluble species during drying of colloidal films

Wedin, Pär; Bergström, Lennart

doi:10.1016/j.jcis.2004.08.023

Cited by 2 publications

(2 citation statements)

References 43 publications

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“…Naturally, this classification presents some crossing points. For example, studies that concern the importance of interfaces in CaCO 3 growth have employed polymeric membranes, − biomacromolecule deposition − on solid supports, lipid Langmuir monolayers − at air/liquid interfaces, and self-assembled monolayers − on solid supports. With respect to the chemical nature of the molecules that are present in the system, we can quote that small nonionic molecules such as glycerol, , ethylene glycol, − and ethanol have been proven to influence the nucleation and growth of calcium carbonate, which can be also influenced by the presence of inorganic salts such as MgCl 2 .…”

Section: Introductionmentioning

confidence: 99%

Calcium Carbonate Particle Growth Depending on Coupling among Adjacent Layers in Hybrid LB/LbL Films

et al. 2008

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There are practical and academic situations that justify the study of calcium carbonate crystallization and especially of systems that are associated with organic matrices and a confined medium. Despite the fact that many different matrices have been studied, the use of well-behaved, thin organic films may provide new knowledge about this system. In this work, we have studied the growth of calcium carbonate particles on well-defined organic matrices that were formed by layer-by-layer (LbL) polyelectrolyte films deposited on phospholipid Langmuir-Blodgett films (LB). We were able to change the surface electrical charge density of the LB films by changing the proportions of a negatively charged lipid, the sodium salt of dimyristoyl-sn-glycero-phosphatidyl acid (DMPA), and a zwitterionic lipid, dimyristoyl-sn-glycero-phosphatidylethanolamine (DMPE). This affects the subsequent polyelectrolyte LbL film deposition, which also changes the the nature of the bonding (electrostatic interaction or hydrogen bonding). This approach allowed for the formation of calcium carbonate particles of different final shapes, roughnesses, and sizes. The masses of deposited lipids, polyelectrolytes, and calcium cabonate were quantified by the quartz crystal microbalance technique. The structures of obtained particles were analyzed by scanning electron microscopy.

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Section: Introductionmentioning

confidence: 99%

Calcium Carbonate Particle Growth Depending on Coupling among Adjacent Layers in Hybrid LB/LbL Films

et al. 2008

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“…Furthermore, the SEM surface examination of the same test specimens, as well as those treated with water, revealed alterations in their micromorphology, including the appearance of microfissures visible at very high magnification (Figure 8). Interestingly, the 12 hour water immersion of PVAc Talens raw sienna severely affected the paint film; the whitish aspect of the SEM image is due to the migration of calcite and clay minerals from the core to the surface of the film (Wedin and Bergström, 2005). This is likely related to the swelling of these particles with water and consequent migration in the waterswollen latex.…”

Section: Effect Of Solvent Immersion On Test Filmsmentioning

confidence: 99%

New Insights into the Cleaning of Paintings: Proceedings from the Cleaning 2010 International Conference, Universidad Politécnica de Valencia and Museum Conservation Institute

Mecklenburg¹,

Charola²,

Koestler³

2013

Smithsonian Contributions to Museum Conservation

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The present volume brings together the papers and posters presented at the "Cleaning 2010 International-New Insights into the Cleaning of Paintings" conference that was held at the Universidad Politécnica de Valencia in Spain, in collaboration with the Smithsonian's Museum Conservation Institute. This was the first major international conference on this topic in two decades. The 20 papers and 19 extended abstracts presented at the conference are included in this publication, grouped into four main categories: Ethics, Aesthetics, Training, and Documentation; Traditional Media: Egg Tempera and Oil; Modern Paints; and Cleaning Systems. Within each category, the papers and extended abstracts are grouped by the specific topic they address to make it easier for the reader to find all related material in one section. A summary of panel discussions held at the end of the conference has also been included. All papers and abstracts included in this publication have been peer reviewed. The aim of the conference was to provide a knowledge exchange forum and to produce a publication that assembles the latest developments in the various studies addressing the problems that affect paintings. These range from normal soiling to removal of aged varnishes, from the effect of solvents on paints to the subsequent changes in their mechanical behavior. The cleaning of unvarnished paintings is one of the most critical issues that was discussed. Finally, different cleaning techniques, such as gels, soaps, enzymes, ionic liquids, and foams, as well as various dry methods and lasers, are discussed in various papers and extended abstracts.

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Migration and precipitation of soluble species during drying of colloidal films

Cited by 2 publications

References 43 publications

Calcium Carbonate Particle Growth Depending on Coupling among Adjacent Layers in Hybrid LB/LbL Films

Calcium Carbonate Particle Growth Depending on Coupling among Adjacent Layers in Hybrid LB/LbL Films

New Insights into the Cleaning of Paintings: Proceedings from the Cleaning 2010 International Conference, Universidad Politécnica de Valencia and Museum Conservation Institute

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