| 초록 |
Oxygen inhibition in free radical polymerization of hydrogel microparticles is a significant factor determining the degree of particle polymerization, which is closely related to the particles’ structural quality and performance. Microparticles that exhibit a higher degree of polymerization display a more developed polymer network, resulting in a more defined morphology, higher content of incorporated materials, and improved performance. The inhibition effect is particularly pronounced in Flow Lithography, which is a microfluidic technique that takes advantage of oxygen inhibition to synthesize hydrogel particles. Here, we show that flow lithography in low temperature enhances degree of polymerization of hydrogel microparticles. The low temperature decreases the diffusivity of oxygen and reduces its inhibition of polymerization. The increase in the degree of polymerization is demonstrated by examining the temperature effect on both the physical and chemical structures of particles. |
