Affected Polymer Layer and Thermo-mechanical Behavior Correlation in Nylon-6/Polycarbonate/Graphene-Oxide Nanocomposites: A Quantitative Study of Polymorphism
| Autor: | Mohammad Soroush Abzan, Navid Karimpour-Motlagh, Ramin Mirzaee, Shervin Ahmadi, Hossein Ali Khonakdar |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Nanocomposite Materials science Graphene Nanoparticle Compatibilization Polymer Condensed Matter Physics law.invention chemistry.chemical_compound Nylon 6 Chemical engineering chemistry law visual_art visual_art.visual_art_medium Crystallite Physical and Theoretical Chemistry Polycarbonate Instrumentation |
| Zdroj: | Thermochimica Acta. 703:178995 |
| ISSN: | 0040-6031 |
| DOI: | 10.1016/j.tca.2021.178995 |
| Popis: | The localization of Graphene-Oxide nanoparticles (GONs) in Nylon-6/Polycarbonate/GONs nanocomposites was systematically scrutinized from thermodynamic (Wettability Coefficient and Characteristic Ratio) and kinetic (two melt-mixing sequences) viewpoints. The simultaneous adsorption of N6 and PC chains on the GO surface manipulates the molecular dynamics of the adsorbed N6 chains. This retardation of molecular dynamics was observed through measuring ΔTg of N6 by DMA and the content of such immobilized chains was calculated by TGA. Then, the investigation of the affected polymer layer including immobilized and frustrated chains on the polymorphism by the deconvoluted WAXD coupled to DSC thermographs delineates the former acts as γ-nuclei and the latter promotes the γ-phase crystallites. Furthermore, the increase in elongation at break by 24.2 % in the nanocomposite is attributed to compatibilization of GONs, enhanced mobility of γ-form polymorphism compared to α-type crystallite and the hierarchical structure of chain bound clusters. |
| Databáze: | OpenAIRE |
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