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Study of the deteriorating mechanism of cultural properties composed of organic polymer

有机聚合物文化财产劣化机理研究

基本信息

批准号：
24650593
负责人：
UEDA NAOMI
金额：
$ 2.5万
依托单位：
(財)元興寺文化財研究所
依托单位国家：
日本
项目类别：
Grant-in-Aid for Challenging Exploratory Research
财政年份：
2012
资助国家：
日本
起止时间：
2012-04-01 至 2014-03-31
项目状态：
已结题

项目摘要

Although the molecular structure is unknown amber, which has rich data obtained from Infrared Spectroscopy and Thermal Analysis was analyzed for the first time by Thermogravimetric Differential Thermal Analysis- Photoionization Mass Spectrometry. Pyrolysis-Gas Chromatography/Mass Spectrometry was also carried out. In order to detailed identification of present and excavated amber, the gained result was compared to those of Electronionization Spectrometry which is one of the current methods.As a result,diterpene of labdane type has been confirmed as a basic skeleton. And,"standard amber" which is presently available at different locations in Japan show almost identical spectrum , though it was difficult to analyze all as they were rather complicated. In the case of deteriorated ones the peaks were more complicated; the changes of molecular structure were recognized though the molecular structure was not presumable.

虽然分子结构未知，但通过红外光谱和热分析获得了丰富的数据，首次采用热重差热分析-光电离质谱对琥珀进行了分析。并进行了裂解气相色谱/质谱联用分析。为了对现存和出土的琥珀进行详细的鉴定，将得到的结果与目前常用的电离光谱分析方法进行了比较，确定了二萜类化合物为基本骨架。而且，目前在日本不同地点出售的标准琥珀显示出几乎相同的光谱，尽管很难分析所有的，因为它们相当复杂。在劣化的情况下，峰更复杂；虽然分子结构不能被推测，但分子结构的变化被识别出来。