Abstract:
Solid Lipid nanoparticle is a very important carrier in the drug delivery system. It was developed in early 1990s as an alternative to other traditional colloidal carriers like liposomes, polymeric nanoparticles and emulsions as it has an increased stability. It is formulated based on the mixture of lipids. However, the mixture of lipids must be carefully chosen to ensure the stability and the good mixing between different lipids. To understand the stability and the structure of lipid nanoparticles, binary mixtures of solid-liquid lipids will be modeled using coarse-grained molecular dynamics simulations to investigate their phase separation behaviors as a function of lipid types and solid-liquid lipid ratios. We will use stearic acid (STA) and cetyl palmitate (CTP) as solid lipids. Oleic acid (OLA) and isopropyl palmitate (IPP) will be selected as liquid lipids. Aggregation of binary lipid mixtures will be studied by varying ratios of solid lipid and liquid lipid starting from the lipid molecules dispersed randomly in water. The structural properties of the lipid aggregates such as the radial distribution function and the density profile, will be calculated. The analysis of simulation data should provide a guideline for selecting a pair of solid-liquid lipids for a stable lipid nanoparticles formulation
Thammasat University. Thammasat University Library