Multi‐scale study of the structuration of candle blends with a high content of vegetable fats to replace paraffins: Effect of 12‐hydroxystearic acid content

Abstract The aim is to replace mineral waxes with vegetable fats as an organogel for candle manufacturing while keeping the same texture. physico‐chemical characteristics of renewable raw materials differ from those and consequently structure blends in which they are used modified. Their properties measured at different scales using FT‐IR analysis, polarized light microscopy, calorimetry rheology. addition 12‐hydroxystearic acid (12‐HSA) promotes creation hydrogen bonds within rapeseed oil that makes possible its incorporation form organogel. 12‐HSA also results a modification crystal microstructure made 90% materials. Hence, lattice denser size reduced compared including waxes. At macroscopic scale, physical modified reference one, mainly A crystallization melting temperatures by differential scanning well rheological behavior hardness assessed penetrometer observed. This higher stability against exudation high content 12‐HSA. Mineral can thus be substituted formulation candles use organogel, via organogelator,