|
|||||
|
|
Polycarbonate nanoparticles spray coated on silicon substrate using micro-electromechanical-systems-based high-frequency ultrasonic nozzle |
|
| Authors: | Yu Lin Song Chih Hsiao Cheng Luh-Maan Chang Chia-Fone Lee Yuan Fang Chou |
| Affiliation: | aDepartment of Mechanical Engineering, National Taiwan University, Taipei, Taiwan, ROC;bDepartment of Otolaryngology, Tzu Chi General Hospital, Hualien, Taiwan, ROC;cDepartment of Medicine, Tzu Chi University, Hualien, Taiwan, ROC;dHigh Technology Research Center, Yen Tjing Ling Industrial Research Institute, Taiwan, ROC |
| Abstract: | Mono-disperse polycarbonate (PC) nanoparticles 20 nm in diameter was spray coated on silicon substrate using a novel high-frequency ultrasonic nozzle. Specifically, Bisphenol-A polycarbonate with a molecular weight (Mw) of approximately 6.4 × 104 g/mol was first dissolved in pyridine. The resulting solution was sprayed into surfactant-containing de-ionized (DI) water using a 300 kHz silicon-based multiple-Fourier horn nozzle (MFHN). As pyridine was extracted into the water, PC nanoparticles formed but remained dispersed. This suspension of PC nanoparticles was then sprayed onto a silicon substrate using a 500 kHz 3-Fourier horn nozzle. Scanning electron microscopy (SEM) of the dried substrate revealed that PC nanoparticles were spread uniformly with no aggregation. |
| Keywords: | High-frequency ultrasonic nozzle Atomization Spray drying Polycarbonate |
| 本文献已被 ScienceDirect 等数据库收录！ | |