Preparation of Porous Nanostructures Controlled by Electrospray = Preparation of Porous Nanostructures Controlled by Electrospray

다국어 초록 (Multilingual Abstract)

Various solid structures were prepared by electrospray technique. In this process, liquid flows out from a capillary nozzle under a high electrical potential and is subjected to an electric field, which causes elongation of the meniscus to form a jet. In our study, by controlling the amount of polyvinyl pyrrolydone in precursor solution, the jet either disrupted into droplets for the formation of spherical particles or was stretched in the electric field for the formation of fibers. During the electrospray process, the ethanol solvent was evaporated and induced the solidification of precursors, forming solid particles. The evaporation of ethanol solvent also enhanced the mass transport of solutes from the inner core to the solid shell, which facilitated fabrication of porous and hollow structure. The network structures were also prepared by heating the collector.

참고문헌 (Reference)

1 최광일, "SiO2 나노입자가 분산된 TiO2 나노섬유의 제작 및 광촉매 특성 분석" 한국화학공학회 52 (52): 667-671, 2014

2 정재현, "PEMFC MEA 제조 방법에 따른 성능 및 내구성" 한국화학공학회 52 (52): 558-563, 2014

3 Bognitzki, M., "Nanostructured Fibers via Electrospinning" 13 : 70-72, 2001

4 Moerman, R., "Miniaturized Electrospraying as a Technique for the Production of Microarrays of Reproducible Micrometer-sized Protein Spots" 73 : 2183-2189, 2001

5 Jaworek, A., "Micro- and Nanoparticle Production by Electrospraying" 176 : 18-35, 2007

6 Dung The Nguyen, "Functionalization of magnetic nanoparticles for biomedical applications" 한국화학공학회 31 (31): 1289-1305, 2014

7 Wu, Y., "Fabrication of Elastin-Like Polypeptide Nanoparticles for Drug Delivery by Electrospraying" 10 : 19-24, 2009

8 Balachandran, W., "Electrostatic Atomization of Conducting Liquids Using AC Superimposed on DC Fields" 30 : 850-855, 1994

9 Jaworek, A., "Electrospraying Route to Nanotechnology: An Overview" 66 : 197-219, 2008

10 Almería, B., "Electrospray Synthesis of Monodisperse Polymer Particles in a Broad (60 nm-2 μm) Diameter Range: Guiding Principles and Formulation Recipes" 417 : 121-130, 2014

11 Bhardwaj, N., "Electrospinning: A Fascinating Fiber Fabrication Technique" 28 : 325-347, 2010

12 Nguyen, D. T., "Controlled Synthesis and Biomolecular Probe Application of Gold Nanoparticles" 42 : 207-227, 2011

13 Wu, Y., "Controllable Porous Polymer Particles Generated by Electrospraying" 310 : 529-535, 2007

14 Yun, K. M., "A New Physical Route to Produce Monodispersed Microsphere Nanoparticle - Polymer Composites" 25 : 11038-11042, 2009