Direct Correlation Between Adhesion Promotion and Coupling Reaction at Immiscible Polymer-Polymer Interfaces
| Autor: | Jianbin Zhang, Timothy P. Lodge, Christopher W. Macosko, Umang Nagpal, Phillip J. Cole |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
chemistry.chemical_classification
Polypropylene Materials science Crazing Maleic anhydride Surfaces and Interfaces General Chemistry Adhesion Polymer Surfaces Coatings and Films chemistry.chemical_compound chemistry Mechanics of Materials Polymer chemistry Polyamide Materials Chemistry Polystyrene Polymer blend |
| Zdroj: | The Journal of Adhesion. 82:887-902 |
| ISSN: | 1545-5823 0021-8464 |
| DOI: | 10.1080/00218460600875847 |
| Popis: | Hugh Brown has shown that interfacial entanglements govern adhesion between two polymers. We demonstrate this for three systems by adding interfacial chains via chemical coupling. The adhesion between polypropylene (PP)/amorphous polyamide (aPA) was reinforced by the coupling reaction of maleic anhydride grafted PP (PP-g-MA) and the primary amine groups on aPA; huge increases in adhesion were observed. A good correlation between critical fracture toughness, G c , and PP-g-MA concentration squared follows Brown's crazing mechanism. For a polystyrene (PS)/aPA interface reinforced by the coupling reaction of poly(styrene-r-maleic anhydride) (PS-r-MA)/aPA only modest adhesion increases in G c were observed through the whole PS-r-MA concentration range. This different behavior of G c vs. functional polymer concentration is believed to be caused by segregation of the formed graft copolymers at the interface. The relationship between G c and the extent of coupling was studied quantitatively with a model PS/PMMA ... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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