Carbanion as a Superbase for Catalyzing Thiol–Epoxy Photopolymerization
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Characterization
2.3. Photolysis
2.4. Real-Time FT-IR
2.5. Dielectric Analysis
2.6. Thermal Properties Measurements
2.7. Nanoindentation Tests
2.8. Synthetic Procedures
2.8.1. Synthesis of Thioxanthone Acetic Acid (TX)
2.8.2. Synthesis of Compound (9-Oxo-9H-Thioxanthen-2-yl)-Acetatetetraethyl-Ammonium (TX–NEt)
2.8.3. Synthesis of Compound (9-Oxo-9H-Thioxanthen-2-yl)-Acetatetetramethyl-Ammonium (TX–NMe)
2.8.4. Synthesis of Compound (9-Oxo-9H-Thioxanthen-2-yl)-Acetatetetrabutyl-Ammonium (TX–NBu)
3. Results and Discussion
3.1. Synthesis of Photobase Generators
3.2. Photolysis Study
3.3. Carbanion-Catalyzed Ring-Opening Polymerization
3.4. Carbanion-Catalysed Thiol–Epoxy Photopolymerization
3.5. Dielectric Analysis
3.6. Thermal Properties of Photocured Films
3.7. Mechanical Properties of Photocured Films
4. Conclusions
Supplementary Materials
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Type of PBGs | Tg °C | T5% °C | Tmax °C |
---|---|---|---|
TX | 6 | 328 | 367 |
TX–NEt | 15 | 326 | 372 |
TX–DBU | 18 | 298 | 376 |
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Dong, X.; Hu, P.; Shen, W.; Li, Z.; Liu, R.; Liu, X. Carbanion as a Superbase for Catalyzing Thiol–Epoxy Photopolymerization. Polymers 2017, 9, 400. https://doi.org/10.3390/polym9090400
Dong X, Hu P, Shen W, Li Z, Liu R, Liu X. Carbanion as a Superbase for Catalyzing Thiol–Epoxy Photopolymerization. Polymers. 2017; 9(9):400. https://doi.org/10.3390/polym9090400
Chicago/Turabian StyleDong, Xiaoqing, Peng Hu, Weizhen Shen, Zhiquan Li, Ren Liu, and Xiaoya Liu. 2017. "Carbanion as a Superbase for Catalyzing Thiol–Epoxy Photopolymerization" Polymers 9, no. 9: 400. https://doi.org/10.3390/polym9090400