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Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application
Published on: March 8, 2019
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Inverse vulcanization enabled self-motivated polysulfide silane: an ultra-efficient interfacial architecture for
Dong Wang1, Yun Duan1, Jialiang Cheng1
1Institute of Emergent Elastomers, Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China. mszhtang@scut.edu.cn.
Materials Horizons
|October 24, 2025
Summary
A novel polysulfide silane (PSTG) offers improved silica-rubber compatibility in composites. This new modifier enhances mechanical properties and reduces energy loss compared to traditional agents.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Sulfur-containing silane coupling agents (SSCAs) are crucial for silica-rubber composite compatibility.
- Current SSCA synthesis is complex, solvent-intensive, and inefficient.
- There is a need for improved interfacial modifiers in rubber composites.
Purpose of the Study:
- To develop a facile synthesis method for a novel polysulfide silane (PSTG).
- To utilize PSTG as an interfacial modifier for silica-filled rubber composites.
- To evaluate PSTG's performance against conventional SSCAs.
Main Methods:
- One-pot sequential inverse vulcanization of sulfur, methoxy polyethylene glycol acrylate, and triethoxyvinylsilane to synthesize PSTG.
- Characterization of PSTG interactions with silica and composite hierarchical structures.
- Mechanical property testing and hysteresis loss measurement of rubber composites.
Main Results:
- PSTG synthesis was achieved through a simplified one-pot process.
- PSTG demonstrated superior interfacial interactions and silica dispersion in rubber composites.
- Composites modified with PSTG exhibited enhanced static mechanical properties and significantly reduced hysteresis loss compared to bis[γ-(triethoxysilyl)propyl] tetrasulfide.
Conclusions:
- PSTG is an effective and novel interfacial modifier for silica-rubber composites.
- The unique structure of PSTG promotes efficient silanization and rubber coupling.
- PSTG offers a promising alternative to conventional SSCAs for high-performance rubber applications.
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