화학공학소재연구정보센터
Langmuir, Vol.33, No.15, 3787-3793, 2017
Interfacial Activity of Starch-Based Nanoparticles at the Oil-Water Interface
Understanding the interfacial activity of polysaccharide nanoparticles adsorbed at oil water interfaces is essential and important for the application of these nanoparticles as Pickering stabilizers. The interfacial properties of starch-based nanospheres (SNPs) at the interface of an n-hexane-water system were investigated by monitoring the interfacial tension at different bulk concentrations. The three-phase contact angle (theta) and the adsorption energy (Delta E) increased with increasing size and degree of substitution with octenyl succinic groups (OSA) in the particles. Compared with the OSA-modified starch (OSA-S) macromolecule, the SNPs effectively reduced the interfacial tension of the n-hexane water system at a relatively higher concentration. These results and' the method reported herein are useful for selecting and preparing polysaccharide nanoparticles as Pickering stabilizers for oil-water emulsions.