COMPREHENSIVE CHARACTERIZATION TECHNIQUES FOR NANOEMULSION-BASED SYSTEMS

Shanmugarathinam Alagarsamy; Rajeevkumar Pazhanimuthu; Dhanishka Balrajs; Santhosh Kumar Gnanasekar

doi:10.37022/jiaps.v11i2.922

Shanmugarathinam Alagarsamy Department of Pharmaceutical Technology, University College of Engineering, Bharathidasan Institute of Technology Campus, Anna University, Tiruchirappalli – 620024, Tamil Nadu, India.
Rajeevkumar Pazhanimuthu Kanachur College of Pharmacy, University Road, Natekal, Mangalore, Karnataka-575018.
Dhanishka Balrajs Kanachur College of Pharmacy, University Road, Natekal, Mangalore, Karnataka-575018.
Santhosh Kumar Gnanasekar Kanachur College of Pharmacy, University Road, Natekal, Mangalore, Karnataka-575018.

DOI https://doi.org/10.37022/jiaps.v11i2.922

Abstract

Nanoemulsions have gained significant attention in pharmaceutical research due to their ability to enhance the solubility, stability, and bioavailability of poorly water-soluble drugs. Proper characterization of nanoemulsion systems is essential to ensure their quality, stability, and effectiveness as drug delivery carriers. This article provides a comprehensive overview of the major characterization techniques used to evaluate nanoemulsion formulations. Key parameters such as droplet size, polydispersity index (PDI), zeta potential, morphology, viscosity, pH, and refractive index are discussed in detail. These parameters help in understanding the physical properties, uniformity, stability, and performance of nanoemulsions. Advanced analytical techniques, including Dynamic Light Scattering (DLS), Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), and Brookfield viscometry, play an important role in determining structural and physicochemical characteristics. In addition, thermodynamic stability studies are essential to identify potential instability mechanisms such as coalescence, flocculation, and Ostwald ripening. A systematic evaluation of these parameters ensures the development of stable, uniform, and efficient nanoemulsion systems. Overall, comprehensive characterization supports formulation optimization and improves the reliability of nanoemulsions as advanced drug delivery systems.

Keywords: Nanoemulsions, Drug Delivery Systems, Characterization Techniques, Droplet Size, Analysis, Zeta Potential, Thermodynamic Stability

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