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Fabrication of Polyurethane-Polyacrylate Hybrid Latexes with High Organosilicon Content via Phase Inversion Emulsion
Junhao Zhou1, Furui Luo1, Liming Tang1
1Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
Molecules (Basel, Switzerland)
|January 8, 2025
Summary
This study developed stable, eco-friendly hybrid latexes by incorporating organosilicon into polyurethane-polyacrylate. The resulting films exhibit enhanced hardness, modulus, and thermal stability, offering improved material properties.
Area of Science:
- Materials Science
- Polymer Chemistry
Background:
- Waterborne polyurethanes offer eco-friendly alternatives to solvent-based systems.
- Polyacrylates provide excellent film formation and weather resistance but have limitations.
- Hybrid materials combining polyurethane and polyacrylate offer synergistic properties.
Purpose of the Study:
- To prepare and characterize polyurethane-polyacrylate hybrid latexes with high organosilicon content.
- To investigate the impact of 3-(methacryloyloxy)propyltrimethoxysilane (MPS) on latex film properties.
- To provide guidance for the stable production of silicone-modified hybrid latexes.
Main Methods:
- Phase inversion emulsion polymerization technology was employed.
- High content of 3-(methacryloyloxy)propyltrimethoxysilane (MPS) was incorporated.
- Systematic research on the mechanical and thermal properties of resulting latex films.
Main Results:
- Stable hybrid latexes were produced with up to 10% MPS content, showing no gel formation.
- Latex films demonstrated increased hardness and elastic modulus with higher MPS content.
- Elongation at break, water absorption decreased, while glass transition temperature and hydrophilicity increased.
Conclusions:
- Organosilicon modification via MPS enhances mechanical and thermal properties of polyurethane-polyacrylate hybrid latexes.
- The developed method ensures stable production and storage of these advanced materials.
- This research offers theoretical guidance for creating novel silicone-modified hybrid latexes.
