An Oligoimide Particle as a Pickering Emulsion Stabilizer
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Instruments
2.3. Characterization
2.4. Preparation of PMDA-ODA Particles in Water
2.5. Preparation of PMDA-ODA Particles in NMP
2.6. Preparation of Reference PMDA-ODA Sample for Degree of Imidization (DI) Measurement
2.7. DI Measurement
2.8. Preparation of Pickering Emulsions Stabilized by PMDA-ODA Particles Synthesized in Water
2.9. Conductivity Measurements
2.10. Drop Test
2.11. Percentage of Survived Emulsion Measurements
2.12. Microencapsulation
3. Results and Discussion
3.1. Synthesis and Properties of Oligoimides
3.2. Characterization and Dispersion of Oligoimide Particles
3.3. Oil-in-Water Pickering Emulsions
3.4. Water-in-Oil Pickering Emulsions
3.5. Microencapsulation
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Conflicts of Interest
References
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Yield (%) | Inherent Viscosity a (dL/g) | DI b (%) | Thermal Properties (°C) | ||
---|---|---|---|---|---|
T5 c | T10 d | Tg e | |||
97 | 0.15 | 95 | 476 | 513 | 352 |
Particle Concentration (wt %) | pH of Dispersion | Conductivity of Dispersion (μS cm−1) | Conductivity of Emulsion (μS cm−1) | Type of Emulsion Formed a | Emulsion Remaining for 48 h b (%) | Mean Droplet Diameter c (μm) |
---|---|---|---|---|---|---|
0.1 | 4.88 | 60 | 44 | Oil-in-water | ~100 | ~118 |
0.2 | 4.47 | 111 | 98 | Oil-in-water | ~100 | ~45 |
0.5 | 4.10 | 243 | 201 | Oil-in-water | ~100 | ~19 |
1.0 | 4.02 | 287 | 239 | Oil-in-water | ~100 | ~11 |
Oil Used | pH of Dispersion | Conductivity of Dispersion (μS cm−1) | Conductivity of Emulsion (μS cm−1) | Type of Emulsion Formed a | Emulsion Remaining for 48 h b (%) | Mean Droplet Diameter c (μm) |
---|---|---|---|---|---|---|
n-Hexadecane | 4.10 | 243 | 201 | Oil-in-water | ~100 | ~19 |
Linseed oil | 4.10 | 243 | 202 | Oil-in-water | ~100 | ~30 |
Olive oil | 4.10 | 243 | 200 | Oil-in-water | ~100 | ~41 |
Phenyl acetate | 4.10 | 243 | 203 | Oil-in-water | ~100 | ~59 |
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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. https://doi.org/10.3390/polym10101071
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(10):1071. https://doi.org/10.3390/polym10101071
Chicago/Turabian StyleCho, Yu-Jin, Dong-Min Kim, In-Ho Song, Ju-Young Choi, Seung-Won Jin, Beom-Jun Kim, Jin-Won Jeong, Chae-Eun Jang, Kunmo Chu, and Chan-Moon Chung. 2018. "An Oligoimide Particle as a Pickering Emulsion Stabilizer" Polymers 10, no. 10: 1071. https://doi.org/10.3390/polym10101071