Adjusting silica/rubber interfacial interactions and properties via the click reactions between liquid polybutadiene and silane. (8th September 2021)

• Record Type: Journal Article
• Authors: Pang, Song; Yu, Yang; Zhang, Liqun; Wu, Youping
• Is Part Of: Composites science and technology. Volume 213(2021)
• Publication Date: 2021-09-08
• Subjects: Interfacial interactions -- Natural rubber -- Silica dispersion -- Triethoxysilane-terminated liquid polybutadiene -- Thiol−ene click reaction; Composite materials -- Periodicals; Composite materials; Fibrous composites; Periodicals; 620.118
• DOI: 10.1016/j.compscitech.2021.108903
• Languages: English
• ISSNs: 0266-3538

Abstract

Abstract: The silica dispersion and interfacial interactions are two essential factors for preparing silica/rubber composites with excellent dynamic performances. In this work, the thiol−ene click reactions between triethoxysilane-terminated liquid polybutadiene (TTPB) and 3-mercaptopropyl-ethoxy-bis(tridecyl-pentaethoxy-siloxane) (Si747) were applied to adjust silica/natural rubber (NR) interfacial interactions, and the silica dispersion and properties of the resulting rubber composites were also investigated. The results of transmission electron microscopy (TEM), dynamic mechanical analyzer (DMA) and rubber process analyzer (RPA) demonstrated that TS2-NR composite with the mole ratio 2 of Si747 to TTPB exhibited the best silica dispersion and the lowest Payne effect due to the synergistic effects of TTPB and Si747; Solid NMR revealed that the interfacial interaction is the strongest for TS2-NR. Thus, TS2-NR exhibited excellent static and dynamic properties. Graphical abstract: Image 1