Preparation and Characterisation of Polyurethane Acrylate-Based Titanium Dioxide Pigment for Blue Light-Curable Ink
Herein, a polyurethane acrylate-based TiO<sub>2</sub> (PU-TiO<sub>2</sub>) was fabricated using a two-step method. First, a polyurethane prepolymer was prepared. Second, PU-TiO<sub>2</sub> was prepared using amino-modified TiO<sub>2</sub> (A-TiO<sub...
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| Main Authors: | , , , , , |
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| Format: | article |
| Language: | EN |
| Published: |
MDPI AG
2021
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| Subjects: | |
| Online Access: | https://doaj.org/article/ed7de484328a4823b5a9b3bf8ddf42c8 |
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| Summary: | Herein, a polyurethane acrylate-based TiO<sub>2</sub> (PU-TiO<sub>2</sub>) was fabricated using a two-step method. First, a polyurethane prepolymer was prepared. Second, PU-TiO<sub>2</sub> was prepared using amino-modified TiO<sub>2</sub> (A-TiO<sub>2</sub>). The best synthesis process of the polyurethane prepolymer was when the reaction temperature was 80 °C, the reaction time was 3 h and the <i>R</i>-value of the polyurethane acrylate was 2. Next, the influence of the A-TiO<sub>2</sub> content on the structure and performance of PU-TiO<sub>2</sub> was examined. The analysis of the rheological properties of the PU-TiO<sub>2</sub> ink indicated that its viscosity gradually increased as the A-TiO<sub>2</sub> content increased. The tensile performance of film improved because of the presence of A-TiO<sub>2</sub>. The photo-polymerisation and photo-rheological performance indicated that the PU-TiO<sub>2</sub> structure changed from a hyperbranched structure with TiO<sub>2</sub> as the core to a segmented structure, as the A-TiO<sub>2</sub> content was 3%. |
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