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应用便携式拉曼光谱仪对赛璐珞、聚苯乙烯、聚氯乙烯、聚甲基丙烯酸甲酯这4种较为常见的仿宝石塑料材料进行了分析测试研究,获得它们的标准拉曼光谱。然后将它们与其对应的被仿宝石(象牙、琥珀、珍珠、水晶)的拉曼光谱分别进行了比对分析。研究结果表明,因其分子结构存在较大差异,其拉曼光谱的差异也比较显著,从拉曼光谱上就能准确地将它们辨别出来。从而找到了一种便捷、准确、快速、无损的鉴定宝石与其塑料仿品的方法。
The four common imitation gem plastic materials such as celluloid, polystyrene, polyvinyl chloride and polymethylmethacrylate were analyzed by portable Raman spectrometer, and their standard Raman spectra were obtained. Then they were compared with the corresponding Raman spectra of simulated gems (ivory, amber, pearl, crystal). The results show that, due to the large differences in their molecular structure, Raman spectra also have significant differences, from Raman spectroscopy will be able to accurately identify them. Thus finding a convenient, accurate, fast, non-destructive identification of gems and their plastic imitation method.