Evaluation of acidic paper deterioration in library materials by pyrolysis-gas chromatography
Evaluation of acidic paper deterioration in library materials by pyrolysis-gas chromatography
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DOI：
10.1016/j.jaap.2008.11.037
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发表时间：
2009-05-01
影响因子：
6
通讯作者：
Taguchi, Yoshihiko
中科院分区：
文献类型：
--
作者：
Ohtani, Hajime;Komura, Tomohiro;Taguchi, Yoshihiko
采用裂解气相色谱(Py-GC)法对旧书中变质的酸性纸进行了评价。一小片(约0.25毫克)变质纸在300摄氏度的热解温度下进行Py-GC测量。左旋葡聚糖及其脱水形式的左旋糖苷是典型的降解产物，而最近的一篇对照论文主要产生了左旋葡聚糖。左旋糖苷的相对得率在严重变质边缘的纸样远高于旧书同一页中心的纸样。因此，在裂解图谱中观察到的左旋糖苷可以作为评价酸性纸劣化程度的标志。左旋糖苷酮的形成可归因于纸张缓慢的劣化过程，其中脱水反应起着重要的作用，并伴随着纤维素链的断裂。并用Py-GC法研究了纸张的储存条件和化学成分对其劣化过程的影响。(C)2008爱思唯尔B.V.保留所有权利。
Pyrolysis-gas chromatography (Py-GC) has been applied to the evaluation of the deteriorated acidic paper in old books. A tiny piece (ca. 0.25 mg) of deteriorated paper was subjected to Py-GC measurement at 300 degrees C pyrolysis temperature. Levoglucosan and its dehydrated form levoglucosenone were typical degradation products while a recent control paper gave rise mainly to levoglucosan. The relative yield of levoglucosenone was much higher for the paper sample taken at the heavily deteriorated marginal part than that in the center of the same page of the old book. Accordingly, levoglucosenone observed in the pyrogram can be used as a marker to evaluate the degree of the deterioration of the acidic paper. The formation of levoglucosenone can be attributed to the slow deterioration process of paper, in which dehydration reaction play an important roll accompanied by the chain scission of cellulose. The Py-GC method for paper evaluation was also applied to clarify the effect of storage conditions and chemical compositions of paper materials to their deterioration processes. (C) 2008 Elsevier B.V. All rights reserved.