Photo Oxidation of Paper Documents A Literature Review
| Main Authors: | , |
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| Format: | Article |
| Language: | English Slovak |
| ISSN: | ISSN 0034-5806 |
| Online Access: | http://www.viks.sk/chk/res_3_97_103_114.doc |
| Abstract: | CONCLUSIONS. This literature review on the oxidative deterioration of cellulose and paper shows, that under no circumstances may this degradation type be ignored. Although the presence of direct light can be avoided often during consulting archival documents and books, there will still be a risk of forming initiators causing further deterioration. The extent of this risk is however until now unknown. Alkali compounds may promote the oxidative deterioration, however, this deterioration type is from a lower degree than that of the acid hydrolyses type. Therefore it is to be recommended to carry out research on the effects on the oxidative and alkaline deterioration of paper, especially for naturally aged papers which are de-acidified. Furthermore it has to be considered if the present accelerated ageing methods for paper will be valid for promoting both types of degradation mechanisms. SUMMARIES. The problem of the photo yellowing of cellulose materials and in special newspapers is well known. Due to restrictions in archives, libraries and museums, papers are well defended against light sources, which may emit a radiation causing the photo deterioration. Still the effects of the photo deterioration of paper should not be underestimated. This paper presents a review on the theoretical backgrounds of the effect of light on the deterioration of paper and shows, that although the presence of direct light can be avoided often during consulting archival documents and books, the risk of forming initiators causing further deterioration should not be ignored. The extent of this risk is however until now unknown. Therefore it has to be recommended to carry out research on the effects on the oxidative and alkaline deterioration of paper, especially for naturally aged papers which are deacidified. |
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| ISSN: | ISSN 0034-5806 |
