Alteration of soda silicate glasses by organic pollutants in museums: Mechanisms and kinetics

Robinet, Laurianne; Eremin, Katherine; Fearn, Sarah; Tate, Jim

doi:10.1016/j.jnoncrysol.2009.05.011

Cited by 38 publications

(39 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Briefly recalling the glass degradation, the first reaction to occur is the ionic exchange, where alkaline ions, negatively charged, are extracted from the glass matrix forming a sodium or potassium hydroxide solution. In order to maintain the matrix neutrality, these leached ions are replaced by H 3 O + ions [19,20]. K has an atomic radius bigger than the one of Na, meaning that when the glass has the same composition, changing only the alkali ion (K or Na), for each leached potassium ion, more H 3 O + ions will fit into the glass matrix, since K occupied a bigger space than Na [21].…”

Section: Discussionmentioning

confidence: 99%

“…The acid will be a H + source, this way accelerating and deepening the corrosion process. Different acid environments were tested and formic acid, specifically, was determined to be the second factor (after water) to have in mind when dealing with glass conservation [20,28]. On the other hand, if the environment is alkaline, especially with a pH above 9, the silica network dissolution will occur.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Glass Crystal Models: A First Approach to a Hidden Treasure of Teaching and Scientific Heritage

et al. 2019

View full text Add to dashboard Cite

Glass crystal models arrived in Portugal around the late 19th century, when high schools, universities, and polytechnics were gradually provided with teaching collections to support science education. Therefore, they are an important material evidence of teaching methodologies of mineral and geology science in the 20th century. The Passos Manuel high school in Lisbon, owns a significant collection of scientific heritage, currently on a long-term loan at the National Museum of Natural History and Science and the University of Lisbon, which includes a set of 98 glass crystal models. Besides glass, these models are composed by adhesives, paper, cardboard, textile threads, paper/textile adhesive tapes, and metal nuts and screws. Also, they show several levels of intervention and different conservation states. In this paper, the first results of a multi-analytic approach to chemically characterize these objects' material composition will be presented. Characterization was done based on portable equipment (pXRF), or by collecting small samples further analyzed using optical microscopy and FTIR-ATR techniques. This study allowed for a first distinction between original materials from the old repairs; to develop a more accurate assessment of the conservation condition; and finally, as one of the main aims of this work, to determine preventive conservation measures in order to better preserve these cultural objects.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Glass Crystal Models: A First Approach to a Hidden Treasure of Teaching and Scientific Heritage

et al. 2019

View full text Add to dashboard Cite

show abstract

“…It was realized due to activity of very weak acid. But in spite of this activity time of corrosive media is a very important factor [23,24].…”

Section: Optical Microscopymentioning

confidence: 99%

“…Observation surface by SEM pointed intense band of silicon, due to created silica gel layer. Information from carried out analyses showed the diversity of the surface and also formation of heterogeneous process of dealkalization [15,22,24].…”

Section: Scanning Electron Microscope With Energy Dispersive X-ray Spmentioning

confidence: 99%

The Influence of Selected Organic Compounds on the Corrosion of Historical Glass Based on Their State of Preservation

Greiner-Wronowa

Świt

2016

Acta Phys. Pol. A

View full text Add to dashboard Cite

The aim of this study was to investigate the influence of selected organic compounds such as acetic acid and formaldehyde on the historical glass objects of corrosion processes. This is a very important problem for the field of conservation and restoration of glass of art. Glass objects exhibited in museum display cases can be suffered by evaporating organic compounds which undergo to reaction with leached glass elements to create corrosion deposit on their surface. The proposed method called glass sensors has been used to identify results of impact of various external factors on the tested glass. Due to aggressive environment for the objects there created corrosion phenomena. Glass sensor were prepared as reproduced XVIII-cent. materials. The current studies were carried out by modern physico-chemical methods such as optical, metallography, scanning electron microscopy, inductively coupled plasma mass spectrometry and the Fourier transform infrared spectrometry. These techniques allow to determine the composition of the corrosion layers as well as their structure. The issues raised in this work have been studied following an interdisciplinary approach. The information obtained by using different techniques provides a valuable source of knowledge about the chemical reactions taking place on the surface of the glass. The results derived from this work are useful for the design and implementation of exhibition recommendations and better planning of conservation tasks.

show abstract

“…Similar interfacial layers have been widely reported for various materials bonded in this way and they are observed to exhibit thicknesses ranging from a few nm up to about 20 nm, depending on the nature of the bonded materials. The origin of such interlayers is still not fully understood, but it has been reported that it could be a ''semiconductor oxide'' layer [12] and/or a contamination with organic material during the wafer bonding process and/or attributable to glass corrosion by air due to the sodium and potassium lixiviation associated with reaction with carbon dioxide [20,21].…”

Section: Growth Of Gan On 2-in Zno/c-al 2 O 3 Wafersmentioning

confidence: 99%

Structural and compositional characterization of MOVPE GaN thin films transferred from sapphire to glass substrates using chemical lift-off and room temperature direct wafer bonding and GaN wafer scale MOVPE growth on ZnO-buffered sapphire

Gautier

Moudakir

Patriarche

et al. 2013

Journal of Crystal Growth

View full text Add to dashboard Cite

Alteration of soda silicate glasses by organic pollutants in museums: Mechanisms and kinetics

Cited by 38 publications

References 32 publications

Glass Crystal Models: A First Approach to a Hidden Treasure of Teaching and Scientific Heritage

Glass Crystal Models: A First Approach to a Hidden Treasure of Teaching and Scientific Heritage

The Influence of Selected Organic Compounds on the Corrosion of Historical Glass Based on Their State of Preservation

Structural and compositional characterization of MOVPE GaN thin films transferred from sapphire to glass substrates using chemical lift-off and room temperature direct wafer bonding and GaN wafer scale MOVPE growth on ZnO-buffered sapphire

Contact Info

Product

Resources

About