Functionalization of halloysite nanotubes surface by using organosilanes is sensitive to the reaction conditions. Halloysite nanotubes (HNTs) were modified using (3-Mercaptopropyl) trimethoxy silane (MPTMS). The experiments were performed under different reaction conditions including, various solvents [Toluene, Tetrahydrofuran (THF), Ethanol, n-Hexane, 1,4 Dioxane and Acetonitrile], water content in the reaction media, volume of solvent, number of moles of silane and catalysts (triethyl amine, ammonia solution and tetra-ethoxy titanium). The elemental analysis, FT-IR analysis were used to identify the samples, which attained the highest percent of functionalization. SEM image and thermogravimetric analysis were provided for the pristine halloysite nanotubes and the modified halloysite nanotubes samples. This work provides a systematic investigation of the reaction conditions highlighting the best protocol to perform such a modification that represents a relevant strategy to control the surface properties of halloysite nanotubes as well as the optimization of the first step toward further modifications of this nano clay.

使用有机硅烷对埃洛石纳米管表面进行功能化对反应条件敏感。使用（3-巯基丙基）三甲氧基硅烷（MPTMS）对埃洛石纳米管（HNT）进行了改性。实验是在不同的反应条件下进行的，包括各种溶剂[甲苯，四氢呋喃（THF），乙醇，正己烷，1,4二恶烷和乙腈]，反应介质中的水含量，溶剂体积，硅烷摩尔数和催化剂（三乙胺，氨溶液和四乙氧基钛）。使用元素分析，FT-IR分析来鉴定样品，它们获得了最高的官能化百分比。提供了原始埃洛石纳米管和改性埃洛石纳米管样品的SEM图像和热重分析。