fabrication of surface modified alumina by polydopamine and related nanocomposite based on cellulose matrix

In the present study, cellulose/polydopamine (pda) hybrid nanocomposites (nc)s using al2o3 nanoparticles (np)s as fillers were produced through ultrasound-assisted technique# by the self-polymerization of dopamine, pda particles were fabricated and homogeneously spread through the chemical interactions in cellulose matrix# the ncs were prepared by insertion of colloidal al2o3 nps in a solution of cellulose/pda complex matrix and after that, the hybrid films with different contents of inorganic phase were obtained by casting method# the nanomaterials were investigated by fourier transform infrared spectrometry (ft-ir), and thermogravimetric analysis (tga)# tga results indicated that the thermal stability of ncs was enhanced distinctly by enhancement in the contents of nps# the improvement of thermal properties was attributed to the homogeneous and good dispersion of polydopamine-based structures of al2o3 in the mixed cellulose matrix and these results were attributed to the strong hydrogen bonding between o–h groups of cellulose and the oxygen atoms of modified nps#