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Biodegradable, poly (lactic acid) (PLA) microspheres have been synthesized via solvent evaporation method using ultrasonic homogenizer as emulsifier. The effect of added surfactant, PVA [poly (vinyl alcohol)], and PLA concentration on the shape and size of the resultant PLA microspheres has been studied. The prime objective of this work was to identify an optimal PVA/PLA concentration to prepare PLA...
We have studied the growth of multiwall carbon nanotubes (CNTs), using graphene oxide (GO) and iron nanoparticles as catalyst for chemical vapor deposition (CVD) technique. This approach is based on covalent bonding between GO and acetylene (C2H2) gas molecules. Catalytic layers of GO and iron nanoparticles were fabricated on copper substrate using spin coater. Main reactions took place in CVD chamber...
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