부산대학교 도서관

The vortex-ring derived particles are new type of non-spherical hydrogel particles, which are prepared byimitating the process of vortex-ring in nature. However, the traditional existing vorticity ring derivedhydrogel particles were prepared by dropping polyelectrolyte solution into contra-ion coagulation bath,which limited the choice of materials. In this paper, a strategy of preparation non-spherical hydrogel particlesby using non-polyelectrolyte polyvinyl alcohol through the method of vortex ring was proposed. Based on the principle that the boraciated polyvinyl alcohol solution could be quickly gelled underalkaline condition, the spherical and various derivative shapes (red cell, bowl, dish, ring) of polyvinylalcohol vortex-ring derived hydrogel particles (PVHP) were prepared. The hydrogel particles have theability to assemble into different modules by dynamic borate bond in the hydrogel particles. Also, thisdynamic borate bond endowed the PVHP decomposable and recyclable performances. In addition,two-compartments, three-compartments and magnetic PVHP were also prepared, endowing PVHP withseveral functions. which opens up a new environmentally friendly way for the preparation of multifunctionalparticles.