Chinese Journal of Chemistry · 2003 · 16 citations · 14 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials ChemistryNanomaterialsPolymer ChemistryNanocompositesNanoparticle CharacterizationNanoparticle DesignNanoparticle DispersionsNanoparticle SynthesisPolymeric NanomaterialsDendrimersDendritic Polymer SynthesisDendritic PolymersHydrodynamic DiameterNanoparticlesPolymer NanoparticlesSilica-based Nanoparticles
Abstract A G 4.0 dendrimer‐like poly(amido amine) (PAMAM) based on silica nanoparticles was fabricated via a divergent approach. It was built from γ‐aminopropyl silica nanoparticles (APSN) core via repetitive addition of acrylate (MA) and hexylenediamine (HDA). FT‐IR and EA were used to monitor the progress of dendrimer during each step. The amino group content of the resulting product increased from 0.49 to 3.72 mmol/g after the 4th generation. In addition, the percentage of grafting increased with increasing generation and reached to 65.9% after 4th generation. It was found that the resulting silica nanoparticles could be dispersed in methanol with a mean hydrodynamic particle diameter of 152.7 nm although the silica nanoparticles had agglomerated during the storage period.
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