Construction of Mechanically Reinforced Thermoplastic Polyurethane from Carbon Dioxide-Based Poly(ether carbonate) Polyols via Coordination Cross-Linking
| Autor: | Zhongyu Duan, Binyuan Liu, Jincheng Dong, Gaosheng Gu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Thermogravimetric analysis Materials science in-situ reaction Polymers and Plastics Organic chemistry General Chemistry Dynamic mechanical analysis Polymer Article Thermoplastic polyurethane chemistry.chemical_compound QD241-441 Differential scanning calorimetry thermoplastic polyurethane chemistry Chemical engineering isophorone diisocyanate coordination enhancement Fourier transform infrared spectroscopy Isophorone diisocyanate poly(propylene ether carbonate) diol Ethylene glycol |
| Zdroj: | Polymers Volume 13 Issue 16 Polymers, Vol 13, Iss 2765, p 2765 (2021) |
| ISSN: | 2073-4360 |
| Popis: | Using carbon dioxide-based poly(propylene ether carbonate) diol (PPCD), isophorone diisocyanate (IPDI), dimethylolbutyric acid (DMBA), ferric chloride (FeCl3), and ethylene glycol (EG) as the main raw materials, a novel thermoplastic polyurethane (TPU) is prepared through coordination of FeCl3 and DMBA to obtain TPU containing coordination enhancement directly. The Fourier transform infrared spectroscopy, 1H NMR, gel permeation chromatography, UV−Vis spectroscopy, tensile testing, dynamic mechanical analysis, X-ray diffraction, differential scanning calorimetry, and thermogravimetric analysis were explored to characterize chemical structures and mechanical properties of as-prepared TPU. With the increasing addition of FeCl3, the tensile strength and modulus of TPU increase. Although the elongation at break decreases, it still maintains a high level. Dynamic mechanical analysis shows that the glass-transition temperature moves to a high temperature gradually along with the increasing addition of FeCl3. X-ray diffraction results indicate that TPUs reinforced with FeCl3 or not are amorphous polymers. That FeCl3 coordinates with DMBA first is an effective strategy of getting TPU, which is effective and convenient in the industry without the separation of intermediate products. This work confirms that such Lewis acids as FeCl3 can improve and adjust the properties of TPU contenting coordination structures with an in-situ reaction in a low addition amount, which expands their applications in industry and engineering areas. |
| Databáze: | OpenAIRE |
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