“…the maghnite-H + , a proton exchanged maghnite instead of using strong acids in order to initiate the polymerization reaction of different monomers such as: 1,3-dioxolane by Belbachir 8 . 1,2-cyclohexeneoxide, styrene oxide and 2,4,4-Trimethyl-2-oxazoline by Yahiaoui [9][10][11] , µ-caprolactone, glycolide and oxetane by Harrane [12][13][14] .…”