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A modified supercritical antisolvent technique (solution enhanced dispersion with enhanced mass transfer using ultrasound in supercritical CO 2 , SEDS-EM) has been applied in preparation of PEG loaded PLA nanoparticles. The hydrophilicity of polylactic acid (PLA) nanoparticles has been increased by adding polyethylene glycol (PEG) in order to improve PLA as a controlled release drug system...
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