Potassium permanganate kmno4

Materials: Trimethylene carbonate (1,3-dioxane-2-one, TMC) was obtained from ForYou Medical (China) and used as received. Graphite powder was obtained from Bay Carbon. N,Ndimethylformamide (DMF), trimethylamine (TEA), phosphorus pentoxide (P2O5), trimethoxysilylpropylmethacrylate, hydrazine monohydrate (N2H4 64-65 %, reagent grade, 98%), ethylene carbonate, trimethylolpropane, stannous octoate (Sn(Oct)2), hydroquinone, methacrylic anhydride and triethylamine were sourced from Sigma-Aldrich. Chloroform, potassium persulfate (K2S2O8) and potassium permanganate (KMnO4) were obtained from Chem-Supply. Sulphuric acid (H2SO4) and 30% hydrogen peroxide (H2O2) were purchased from Ajax Finechem. 1-[4-(2-hydroxyethoxy) phenyl]-2-hydroxy-2-methyl-1-propane-1-one (Irgacure 2959) was purchased from Ciba (Ciba®, Switzerland). Dichloromethane (>99.5%) was purchased from VWR chemicals, Belgium. Milli-Q water with a resistivity of 18.2 mΩ cm -1 was used in all preparations.

In the study, 4-hydroxylbenzoic acid (4-HBA), Oxone (PMS, 2KHSO5•KHSO4•K2SO4), acetic acid (CH3COOH), hydrochloric acid (HCl), polyvinyl alcohol ((C2H4O)x, PVA), methanol (CH4O), tert-buanol (TBA), ethanol (C2H5OH) and 5, 5-dimethyl-1-pyrrolidine N-oxide (DMPO) were purchased from Sigma-Aldrich. Potassium permanganate (KMnO4) was supplied by Chem-Supply. Glycerol (C3H8O3) was obtained from Rowe-Scientific. Al2O3 nanoparticles (corundum, 500 nm) were purchased from NanoAmor. Grinding balls (Zirconium, 1, 2, 5, 10 and 20 MM diameters) were supplied by Nikkato. All solutions were prepared using ultrapure water (18.2 MΩ.cm at 25 o C) from a Mill-Q water system. All chemicals were used as received without further purification.