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Polymers 2018, 10(10), 1071; https://doi.org/10.3390/polym10101071

An Oligoimide Particle as a Pickering Emulsion Stabilizer

1
Department of Chemistry, Yonsei University, Wonju 26493, Korea
2
Samsung Advanced Institute of Technology, Suwon 16678, Korea
*
Author to whom correspondence should be addressed.
Received: 14 August 2018 / Revised: 17 September 2018 / Accepted: 25 September 2018 / Published: 27 September 2018
(This article belongs to the Special Issue Aromatic Polymers)
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Abstract

A pyromellitic dianhydride (PMDA) and 4,4′-oxydianiline (ODA)-based oligoimide (PMDA-ODA) was synthesized by a one-step procedure using water as a solvent. The PMDA-ODA particles showed excellent partial wetting properties and were stably dispersed in both water and oil phases. A stable dispersion was not obtained with comparison PMDA-ODA particles that were synthesized by a conventional two-step method using an organic solvent. Both oil-in-water and water-in-oil Pickering emulsions were prepared using the oligoimide particles synthesized in water, and the size of the emulsion droplet was controlled based on the oligoimide particle concentration. The oligoimide particles were tested to prepare Pickering emulsions using various kinds of oils. The oil-in-water Pickering emulsions were successfully applied to prepare microcapsules of the emulsion droplets. Our new Pickering emulsion stabilizer has the advantages of easy synthesis, no need for surface modification, and the capability of stabilizing both oil-in-water and water-in-oil emulsions. View Full-Text
Keywords: Pickering emulsion; stabilizer; oligoimide particle; microencapsulation Pickering emulsion; stabilizer; oligoimide particle; microencapsulation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Cho, Y.-J.; Kim, D.-M.; Song, I.-H.; Choi, J.-Y.; Jin, S.-W.; Kim, B.-J.; Jeong, J.-W.; Jang, C.-E.; Chu, K.; Chung, C.-M. An Oligoimide Particle as a Pickering Emulsion Stabilizer. Polymers 2018, 10, 1071.

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