Synthesis of Polyamide-Based Microcapsules via Interfacial Polymerization: Effect of Key Process Parameters
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Synthesis of PA 210 Microcapsules (PA MCs)
2.3. Synthesis of PA 210 Membranes (PA Membranes)
2.4. Hydrolysis of Sebacoyl Chloride under Emulsification Conditions
2.5. Determination of Apparent Partition Coefficient of EDA
2.6. Characterization of PA 210 Microcapsules and Membranes
3. Results and Discussion
3.1. Selection of Interfacial Polymerization Critical Conditions—MC1
3.2. Effect of Monomers Molar Ratio on Polyamide Microcapsules—MC2
3.3. Effect of SC Solvent/Organic Core on Polyamide Microcapsules—MC1, MC3, MC4
3.4. Effect of Polymerization Stirring Rate and Time on Polyamide Microcapsules—MC5, MC6
3.5. Implementation of Most Appropriate Conditions for PA 210 MCs Formation via Interfacial Polymerization—MC7
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Sample | EDA:SC Molar Ratio | SC Solvent | Agitation Speed (rpm) | Agitation Time (min) |
---|---|---|---|---|
MC1 | 10:1 | Dodecane | 400 | 30 |
MC2 | 5:1 | Dodecane | 400 | 30 |
MC3 | 10:1 | Hexane | 400 | 30 |
MC4 | 10:1 | Toluene | 400 | 30 |
MC5 | 10:1 | Dodecane | 100 | 30 |
MC6 | 10:1 | Dodecane | 100 | 120 |
MC7 | 10:1 | Toluene | 100 | 30 |
Sample | Process Yield (%) | [η] (dL g−1) | |
---|---|---|---|
Control | 42 | 0.550 | 7500 |
MC1 | 11 | 0.344 | 3600 |
MC2 | 3 | 0.233 | 2000 |
MC3 | 1 | 0.188 | 1400 |
MC4 | 30 | 0.372 | 4100 |
MC5 | 14 | 0.313 | 3100 |
MC6 | 11 | 0.398 | 4500 |
MC7 | 33 | 0.525 | 7000 |
DSC | TGA | |||||||
---|---|---|---|---|---|---|---|---|
Sample | Tc (°C) | ΔHc (°C) | Tm (°C) | ΔHm (J g−1) | Td5% (°C) | Td1 (°C) | Td2 (°C) | Residue (%) |
Control | 245 | 69 | 264 | 83 | 332 | 375 | 449 | 20 |
MC1 | 246 | 56 | 265 | 57 | 319 | 365 | 453 | 31 |
MC2 | 245 | 56 | 266 | 59 | 317 | 362 | 450 | 27 |
MC3 | 244 | 66 | 264 | 65 | 304 | 358 | 451 | 22 |
MC4 | 251 | 60 | 266 | 57 | 318 | 375 | 450 | 20 |
MC5 | 242 | 55 | 262 | 60 | 318 | 367 | 454 | 28 |
MC6 | 243 | 61 | 263 | 59 | 324 | 360 | 451 | 38 |
MC7 | 251 | 88 | 266 | 79 | 305 | 374 | 452 | 22 |
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Mytara, A.D.; Chronaki, K.; Nikitakos, V.; Papaspyrides, C.D.; Beltsios, K.; Vouyiouka, S. Synthesis of Polyamide-Based Microcapsules via Interfacial Polymerization: Effect of Key Process Parameters. Materials 2021, 14, 5895. https://doi.org/10.3390/ma14195895
Mytara AD, Chronaki K, Nikitakos V, Papaspyrides CD, Beltsios K, Vouyiouka S. Synthesis of Polyamide-Based Microcapsules via Interfacial Polymerization: Effect of Key Process Parameters. Materials. 2021; 14(19):5895. https://doi.org/10.3390/ma14195895
Chicago/Turabian StyleMytara, Angeliki D., Konstantina Chronaki, Vasilis Nikitakos, Constantine D. Papaspyrides, Konstantinos Beltsios, and Stamatina Vouyiouka. 2021. "Synthesis of Polyamide-Based Microcapsules via Interfacial Polymerization: Effect of Key Process Parameters" Materials 14, no. 19: 5895. https://doi.org/10.3390/ma14195895