The shells of microbubbles are made from biodegradable high molecular polymer and the microbubbles are prepared using ultrasonic emulsification method with SPG membrane emulsification technique and freeze-dry technique.

In order to prepare uniform-sized and size-controllable emulsion and nano-microspheres, membrane emulsification technique has been developed.

In the present study we address the dependence of crystalline morphology of CdS nanoparticles obtained by emulsion liquid membrane technique with various concentrations of surfactant (Span 80) and carrier (TBP).

Experimental study on the preparation of O/W emulsions by SPG membrane emulsification;