Materials
Hydroxyl-terminated poly(dimethylsiloxane) (HO-PDMS-OH, ~60 mPa·s) was purchased from Wacker Chemie AG. (3-Aminopropyl)triethoxysilane (APTES), 3-glycidoxypropyltrimethoxysilane (GPTMS), dibutyltin dilaurate (DBTB), ethanol, diiodomethane, and hexadecane were provided by Shanghai Macklin Biochemical Co., Ltd. Light crude oil samples with a viscosity of ~300 cP were provided by PetroChina. Hydrochloric acid (HCl), sodium chloride (NaCl), and sodium hydroxide (NaOH) were procured from Tianjin Damao Chemical Reagent Factory and were of analytical reagent grade. Peanut oil and pump oil were purchased from local stores.