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Heritage Science
Fig. 6 | Heritage Science

Fig. 6

From: Gutta percha, natural rubber and balata-chemical characterization of polyisoprenes in the context of cultural heritage

Fig. 6

Gutta percha from Cipetir (Tjipetir in Dutch) in 2015 and 1917 shows different degradation of surfaces exposed to air in new samples (6a–c) and old samples immersed under water (6d–f), indicating a correlation between the degradation and storage conditions. Figure 6a–c, fresh material Cipetir, 2015, exposed to air, and Fig. 6d–f, a century old material stored under water since 1917, (Tjipetir), found on the Netherland seacoast around 2019. (Photo credits: 6 d R. Schoevaart, Netherlands, with permission; 6a–f, H. Szczepanowska)

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