Charge-Reduced Particles via Self-Propelled Electrohydrodynamic Atomization for Drug Delivery Applications.

Area of Science:

• Materials Science
• Biotechnology
• Chemical Engineering

Background:

• Electrohydrodynamic atomization (EHDA) offers precise control over particle size and production rate.
• Conventional EHDA produces highly charged particles unsuitable for inhalation drug delivery due to safety concerns.

Purpose of the Study:

• To develop a self-propelled EHDA system for generating and delivering charge-reduced particles.
• To address the limitations of conventional EHDA for inhalation drug delivery applications.

Main Methods:

• A self-propelled EHDA system utilizing a sharp electrode to generate ion wind was developed.
• Ion wind was employed to reduce particle charge and facilitate targeted delivery.
• Poly(vinylidene fluoride) (PVDF) solutions at various concentrations were used to create polymer products with controlled morphologies.

Main Results:

• The self-propelled EHDA system successfully generated charge-reduced particles.
• Particle morphologies were effectively controlled by varying PVDF concentrations.
• The technique demonstrated safety for bioapplications through successful delivery of PVDF particles onto breast cancer cells.

Conclusions:

• The self-propelled EHDA system is a promising one-step platform for generating and delivering charge-reduced particles.
• This technique offers simultaneous particle production, charge reduction, and direct delivery capabilities.
• The versatility of self-propelled EHDA makes it suitable for various drug delivery applications.