Mechanism of Autoxidative Degradation of Cellulose
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| Format: | Article |
| Language: | English Slovak |
| ISSN: | ISSN 0034-5806 |
| Online Access: | http://www.viks.sk/chk/res_4_97_163_176.doc |
| Abstract: | Conclusions. Despite our limited knowledge of the mechanisms leading to ageing of cellulose under neutral or alkaline conditions, some research results indicate the importance of autoxidative reactions. These seem to proceed by a variety of mechanisms, which generally involve substrate anion formation as the initial step and may continue via a free radical chain, or nonchain reaction pathways. Understanding these mechanisms may help us in choosing the right treatment for certain paper, as well as form the basis for further stabilization studies. This work is in progress. Summaries. The possible mechanisms of autoxidative degradation of cellulose are listed and their importance in degradation of paper during ageing is analysed. It is pointed out that autoxidative reactions are accelerated in alkaline media. In addition, certain transition metal ions as well as groups, which are capable of autoxidation, also promote the free radical reactions. Understanding of the main degradative routes may help us in choosing the right conservation treatment for certain paper, as well as form the basis for further stabilization studies. |
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| ISSN: | ISSN 0034-5806 |
