Other combinations of polymers and oils provide such a formation of single-core double emulsions when poured in PVA, as described above in the case of PEG-octanol. For instance, dispersing bPEI or PVPone (14 and 10%, respectively) in pure 1-octanol was successfully achieved, with solutions remaining liquid at room temperature, and double emulsions could then be produced at RT. As well, oleic acid and tributyrin in which PEG was dispersed also formed double emulsions. As for 1-octanol, these solutions were limpid at 70°C but gelled upon cooling.