Preparation of Well-Exfoliated Poly(ethylene-co-vinyl acetate)/α-Zirconium Phosphate Nanocomposites
| Autor: | Mingzhen Zhao, Hong-mao Wu, Wen-hao Kang, Joseph Baker, Zhiyuan Jiang, Zewen Zhu, Jen-long Wu, Hung-Jue Sue |
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| Rok vydání: | 2021 |
| Předmět: |
Nanocomposite
Materials science Polymer nanocomposite 02 engineering and technology Surfaces and Interfaces 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Exfoliation joint 0104 chemical sciences Solvent chemistry.chemical_compound Zirconium phosphate chemistry Pulmonary surfactant Chemical engineering Electrochemistry Vinyl acetate Surface modification General Materials Science 0210 nano-technology Spectroscopy |
| Zdroj: | Langmuir. 37:4550-4561 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/acs.langmuir.1c00146 |
| Popis: | Poly(ethylene-co-vinyl acetate) (PEVAc) nanocomposites containing exfoliated α-zirconium phosphate (ZrP) have been prepared using a simple solution mixing method to improve their barrier and mechanical properties. ZrP was pre-exfoliated with a surfactant, followed by additional targeted surface functionalization and surfactant exchange to allow for hydrogen bonding of ZrP with the acetate functionality on PEVAc and to improve ZrP surface hydrophobicity. The solvent is found to play an important role in stabilizing ZrP exfoliation in the presence of PEVAc to retain full exfoliation and homogeneous dispersion upon the removal of the solvent. The PEVAc/ZrP nanocomposite exhibits greatly improved oxygen barrier, melt strength, and mechanical properties. The usefulness of the present study for the preparation of olefinic polymer nanocomposites is discussed. |
| Databáze: | OpenAIRE |
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