Sintesis material polimer konduktif polianilin pani protonasi asam perklorat (HCLO4) dan karakterisasi komposit microwave absorber berpenguat nanopartikel Ba1-xsrxtio3 (x: 0.3; 0.4; 0.7) = Synthetized conductive polyaniline by percchlorate acid protonation and characterization composite of microwave absorber reinforced Ba1-xsrxtio3 (x: 0.3; 0.4; 0.7) nanoparticles / Okti Mulyani