Yu, Hye Hyun Lim, Jung-Ah Ham, Seung Wook Lee, Kang-Bong Lee, Yeonhee 2024-01-19T15:34:20Z 2024-01-19T15:34:20Z 2021-09-02 2021-01 2073-4360 https://pubs.kist.re.kr/handle/201004/117599 Asian lacquer is a special polymeric material tapped from lacquer trees. The tree's sap is a complex mixture of compounds, such as catechol lipids, polysaccharides, glycoproteins, enzymes, and water. Researchers have not yet quantitatively analyzed blended lacquers. We evaluated the compositions of Japanese and Vietnamese lacquers, and blends of the two, using time-of-flight secondary ion mass spectrometry (ToF-SIMS), pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS), and high-performance liquid chromatography (HPLC). ToF-SIMS provided quantitative results for blended lacquers; provided structural information on polymeric lacquer films; and indicated the presence of dimers of urushiol-urushiol, urushiol-laccol, and laccol-laccol derivatives. We used Py-GC/MS and HPLC to obtain linear calibration curves. The specific peak intensity was a linear function of the ratio of Japanese to Vietnamese lacquer in the blends. For an unknown mixture, all three techniques gave essentially the same results. These quantitative methods will be useful for improving the physical properties of polymeric lacquer films, and evaluating the lacquer quality in industry and historic conservation. English MDPI ORIENTAL LACQUER FILMS Quantitative Analysis of Blended Asian Lacquers Using ToF-SIMS, Py-GC/MS and HPLC Article 10.3390/polym13010097 1 POLYMERS, v.13, no.1, pp.1 - 12 POLYMERS 13 1 1 12 scie scopus 000606267100001 2-s2.0-85099434839 Polymer Science Polymer Science Article ORIENTAL LACQUER FILMS blended lacquer quantitative analysis ToF-SIMS Py-GC/MS HPLC