Preparation of multi-temperature responsive elastomers by generating ionic networks in 1,2-polybutadiene using an anionic melting method
| Autor: | Jinhui Liu, Niu Zhibin, Zhaobo Wang, Yuan Yuka, Qian Li, Jing Hua, Fansen Meng |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Calcium hydride Materials science Maleic anhydride Ionic bonding 02 engineering and technology General Chemistry Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Elastomer 01 natural sciences 0104 chemical sciences Sodium hydride chemistry.chemical_compound Payne effect Polybutadiene chemistry Chemical engineering 0210 nano-technology |
| Zdroj: | Soft Matter. 16:3686-3694 |
| ISSN: | 1744-6848 1744-683X |
| DOI: | 10.1039/d0sm00223b |
| Popis: | The development of reversible networks in elastomers provided unique inspiration for the design of advanced polymers with excellent properties. In this paper, we adopted an anionic melting method to introduce carboxylate groups into 1,2-polybutadiene (1,2-PB), using maleic anhydride as a modifier, and sodium hydride (NaH), calcium hydride (CaH2), and lithium aluminum hydride (LiAlH4) as metallization reagents. Na-Based, Ca-based, and Li/Al-based ionic bond networks were constructed in the covalently crosslinked 1,2-PB. The effects of the electronegativity and valence of the metal ions on the strength and reversible temperature of the ionic network were studied. Payne effect was shown by rheological tests, demonstrating the interactions between the ionic networks and rubber chains. The reforming temperature for these ionic networks was studied by stress-relaxation analysis, and shape memory experiments were performed based on these temperatures. This concept provides novel inspiration for the design of high-performance and temperature-adaptive elastomers. |
| Databáze: | OpenAIRE |
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