Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.1828598
Title: Surfactant free fabrication of polyimide nanoparticles
Authors: Xiong, J.Y. 
Liu, X.Y. 
Chen, S.B. 
Chung, T.S. 
Issue Date: 6-Dec-2004
Source: Xiong, J.Y., Liu, X.Y., Chen, S.B., Chung, T.S. (2004-12-06). Surfactant free fabrication of polyimide nanoparticles. Applied Physics Letters 85 (23) : 5733-5735. ScholarBank@NUS Repository. https://doi.org/10.1063/1.1828598
Abstract: Polyimide nanoparticles are fabricated using a combined liquid-liquid phase separation and solvent/ nonsolvent mixing technology. This technology allows us to produce stable polyimide nanoparticles with tunable size without any surfactants. Selective solvation and electron pair donor/electron pair acceptor interaction are employed to stabilize nanoparticles. The formation of polyimide nanoparticles is governed by a nucleation-dominated process and therefore the particle size is controlled by the nucleation rate. A very high level of supersaturation can be attained under the intensive local motions induced by ultrasound, resulting in a very high nucleation rate. This effect is found extremely useful in the fabrication of sub-50-nm polyimide nanoparticles. © 2004 American Institute of Physics.
Source Title: Applied Physics Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/51821
ISSN: 00036951
DOI: 10.1063/1.1828598
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