Structures and Adhesion Properties at Polyethylene/Silica and Polyethylene/Nylon Interfaces
| Autor: | Minyu Xiao, Zhan Chen, Xiaolin Lu, Brian W. Walther, Carol Mohler, Christopher J. Tucker |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
In situ Materials science Infrared spectroscopy Maleic anhydride 02 engineering and technology Surfaces and Interfaces Polymer Adhesion Polyethylene 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Grafting 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Chemical engineering chemistry Electrochemistry General Materials Science Methylene 0210 nano-technology Spectroscopy |
| Zdroj: | Langmuir : the ACS journal of surfaces and colloids. 34(21) |
| ISSN: | 1520-5827 |
| Popis: | The molecular structures of buried interfaces of maleic anhydride grafted and ungrafted polyethylene films with silica and nylon surfaces were studied in situ using sum-frequency generation (SFG) vibrational spectroscopy. Grafting maleic anhydride to polyethylene altered the molecular structures at buried interfaces, including changing the orientation of polymer methylene groups and resulting in the presence of C═O groups at silica interfaces. These molecular level changes are correlated with enhanced adhesion properties, with ordered C═O groups and in-plane orientation of the methylene groups associated with higher levels of adhesion. While improved adhesion was observed for grafted polyethylene at the nylon interface, no C═O groups were detected at the interface using SFG, for films thermally treated at 185 °C. In this case, either no C═O groups are present at the interface or they are disordered; the latter explanation is more likely, considering the observed improvement in adhesion. |
| Databáze: | OpenAIRE |
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