Preparation of octyl-grafted alginate-amide gel particle and its application in Pickering emulsion

Jisheng Yang*, Lei Liu, Suya Han

School of Chemistry and Chemical Engineering, Yangzhou University

Abstract：Sodium alginate (Na-Alg) was hydrophobic modified to provide octyl-grafted alginate-amide derivative(Alg-C8).The prepared Alg-C8 was used to develop Ca2+ induced gel particles (Ca-Alg-C8), as an interfacial stabilizer forPickering emulsions. The size distribution and morphology of Ca-Alg-C8 were characterized by dynamic light scattering (DLS), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Stability and rheological property of the Pickering emulsions, liquid paraffin as oil phase, stabilized by Ca-Alg-C8, were influenced by the gel particle concentration, oil fraction and ionic strength in water phase. Optical microscopy under fluorescence evidenced that the Ca-Alg-C8 particles could be adsorbed onto interface of the emulsion droplets.

期刊：Colloids and Surfaces A 529 (2017) 320–327

文章链接：http://www.sciencedirect.com/science/article/pii/S0927775717305800