Effects of crystallization on micro-mechanical behavior of polyethylene nanocomposites using Raman spectroscopy
Martell, Mason ; Mendez, Nicholas F. ; Kumar, Sanat ; Müller, Alejandro J. ; Hurd, George ; Sebastián, Víctor (Universidad de Zaragoza) ; Punihaole, David ; Mustafa, Rusul ; Aheran, Lauren ; Benicewicz, Brian ; Ly, Richard ; Lin, Huina ; Sansoz, Frederic ; Schadler, Linda S.
Resumen: Recent work has shown that nanoparticles can be ordered in semicrystalline polymers by controlling the crystallization rate, specifically by forcing them to migrate to the amorphous regions of the lamellar morphology. Here, we study the micromechanical behavior of neat polyethylene and silica/polyethylene nanocomposites filled with 15 nm brush-modified silica in the quenched and slow-crystallized organized state. The molecular response to loading in tension was monitored with Raman spectroscopy using the peaks associated with crystalline and amorphous regions. The addition of nanofillers dramatically reduced the shift in the amorphous peaks, indicating that in addition to carrying some load, the brush-modified nanoparticles may be acting as tie molecules that restrict amorphous deformation. The higher degree of lamellar organization and the organization of the nanoparticles also impacted the crystalline peak shifts, but more subtly.
Idioma: Inglés
DOI: 10.1080/20550324.2025.2471679
Año: 2025
Publicado en: Nanocomposites 11, 1 (2025), 68-78
ISSN: 2055-0324
Tipo y forma: Article (Published version)
Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
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Idioma: Inglés
DOI: 10.1080/20550324.2025.2471679
Año: 2025
Publicado en: Nanocomposites 11, 1 (2025), 68-78
ISSN: 2055-0324
Tipo y forma: Article (Published version)
Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2025-03-19-14:21:21)
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Record created 2025-03-19, last modified 2025-03-19