Hydroxyl-terminated natural rubber can be used as an eco-friendly and renewable bio-based polyol for the production of sustainable polyurethanes. It can also have other advantages such as high elasticity and thermal stability over many other conventional polyols. Liquid natural rubber (LNR) with primary and secondary hydroxyl end-groups was prepared via ozonolysis of natural rubber (NR) in chloroform at 60 °C followed by the subsequent reduction with sodium borohydride. M_n and M_w of the prepared hydroxyl-telechelic liquid natural rubber were 2368 g/mol and 3949 g/mol, respectively. The prepared liquid natural rubber has a narrow unimodal molecular weight distribution and a relatively low polydispersity index of 1.9. The presence of terminal hydroxyl groups and cis-1,4-isoprenic microstructures of hydroxyl-telechelic liquid natural rubber were determined by FT-IR, ¹H and ¹³C NMR spectroscopy. The prepared hydroxyl-telechelic liquid natural rubber was successfully cured with toluene diisocyanate (TDI) and a polyurethane elastomer was obtained.

端羟基天然橡胶可用作环保且可再生的生物基多元醇，用于生产可持续聚氨酯。与许多其他传统多元醇相比，它还具有其他优势，例如高弹性和热稳定性。具有伯羟基和仲羟基端基的液态天然橡胶 (LNR) 是通过天然橡胶 (NR) 在 60 °C 下在氯仿中臭氧分解，然后用硼氢化钠还原制备的。中号_Ñ和M_瓦特制备的羟基远螯液体天然橡胶分别2368克/ mol和3949克/摩尔，分别。制备的液态天然橡胶具有较窄的单峰分子量分布和相对较低的多分散指数（1.9）。端羟基和顺式的存在通过 FT-IR、¹ H 和¹³ C NMR 光谱测定了羟基遥爪液态天然橡胶的 -1,4-异戊二烯微结构。制备的羟基遥爪液态天然橡胶与甲苯二异氰酸酯（TDI）固化成功，得到聚氨酯弹性体。