Ink Corrosion Aqueous and Non-aqueous Treatment of Paper Objects-State of the Art
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| Format: | Article |
| Language: | English Slovak |
| ISSN: | ISSN 0034-5806 |
| Online Access: | http://www.viks.sk/chk/res_3_4_99_167_180.doc |
| Abstract: | SUMMARIES. Paper conservators are still uncertain about the treatment they should apply on ink corroded objects. This might be due to unsatisfactory results obtained by previous treatments, as well as the fact that the degradation process is chemically complicated and still under investigation. However, the main factors that cause ink decay are known today, and so more suitable conservation measures can be chosen. This article is discussing commonly applied aqueous and non-aqueous treatments. Also the positive influences of these treatments and their risks are discussed, based on the results of previously published studies, as well as on the author's practical experiences. CONCLUSION. Currently used conservation measures vary in their effectiveness with respect to delaying the ink-corrosion processes. For each artifact a method must be chosen which is appropriate to its nature and its problems. Every treatment always combines a number of benefits as well as risks. If the ink corrosion process should be retarded, the effect of both catalytic active components must be blocked. Therefore removal of all iron(II) and iron(III)ions outside the ink complex, and the neutralisation of the acid must be guaranteed. Recent investigations have shown, that the combination of an aqueous chelat-ing agent (calcium phytate) with an aqueous deacidification method (calcium bicarbonate) gives positive results. The addition of ethanol offers a faster and uniform penetration of the aqueous treatment solution18. At the Netherlands Institute for Cultural Heritage a standard method has been developed which allows the comparison of treatments with regard to their effectiveness to arrest ink corrosion. |
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| ISSN: | ISSN 0034-5806 |
