Fig. 7From: Biodegradation of different formulations of polyhydroxybutyrate films in soilSEM micrographs for PHB and PHB–TiO2 films that prepared from UV treated PHB films. a1 PHB (UV) before degradation, b1 PHB–TiO2 (UV) before degradation, a2 PHB (UV) after degradation, b2 PHB–TiO2 (UV) after degradation, a3 PHB (UV) after degradation, b3 PHB–TiO2 (UV) after degradationBack to article page