Natural rubber is one of the most important polymers produced by plants, which contains cis-1,4-polyisoprene, protein and fatty acids. It has unique properties compared to synthetic rubber and has many different uses in industry. Here, natural rubber of Euphorbia macroclada was characterized due to its abundance in arid areas. Isolation of rubber was done using both acetone and hexane solvents. FT-IR and NMR further characterized and confirmed the structure of rubber as cis-1,4 polyisoprene. GPC analyses showed a molecular weight of 8.180E+2 with polydispersity of 1.287. These data is useful for better understanding of latex composition in family of Euphorbiaceae.

天然橡胶是植物生产的最重要的聚合物之一，含有顺式-1,4-聚异戊二烯、蛋白质和脂肪酸。与合成橡胶相比，它具有独特的性能，在工业上有许多不同的用途。在这里，大戟属天然橡胶的特征在于其在干旱地区的丰富性。使用丙酮和己烷溶剂进行橡胶的分离。FT-IR 和 NMR 进一步表征并确认了橡胶的结构为顺式-1,4 聚异戊二烯。GPC 分析显示分子量为 8.180E+2，多分散性为 1.287。这些数据有助于更好地了解大戟科的乳胶成分。