In a previous work pseudoboehmites obtained from aluminum nitrate as precursor using the sol-gel method were irradiated with electrons to study the possible effects of radiation in their properties. In this work it has been studied the effect of radiation with electron beam in a pseudoboehmite obtained by sol-gel synthesis using aluminum chloride and ammonium hydroxide as precursors. The addition of poly(vinyl alcohol) ([C₂H₃OH]_n) solution (8 wt% in water) in the reaction mixture was also studied. The aluminium chloride solution was mixed with the polyvinyl alcohol and the mixture was dropped into an ammonium hydroxide solution. It has been studied the effects of pseudoboehmite radiation in the aluminas structure resulted from sol-gel synthesis product calcination. The milky-white colloidal pseudoboehmite precipitate obtained by sol-gel method was filtered off, washed with distilled water, dried at 70°C, and powdered in a mortar. The sample acquired was calcined at 1100^o C for 4 hours and after that the X-ray powder diffraction was performed. A well crystallized a-alumina was obtained at 1100^oC from the not irradiated samples. The X-ray powder diffraction data shows that in some irradiated samples calcined at 1100^o C for four hours presented θ-alumina and a-alumina. The powder dried at 70^o C was also examined by thermal analysis. The Thermo Gravimetric analysis (TG) and Differential Scanning Calorimetry (DSC) were used to evaluate mass loss and the pseudoboehmite endothermic and exothermic transformations. The scanning electron microscopy was also used to analyze the samples.

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