Fig. 3
From: Mechanical and chemical characterization of biochar-reinforced polystyrene composites
(a) SEM photograph of plantain peel biochar. Magnification (I) 1000x and (II) 2000x. (b) SEM photograph of PBR. Magnification (I) 1000x and (II) 2000x. (c) SEM photograph of PBR90B10. Magnification (I) 1000x and (II) 2000x. (d) SEM photograph of PBR80B20. Magnification (I) 1000x and (II) 2000x. (e) SEM photograph of PBR70B30. Magnification (I) 1000x and (II) 2000x. (f) SEM photograph of PBR60B40. Magnification (I) 1000x and (II) 2000x