Photothermal microscopy applied to the study of polymer composites
| Autor: | Facundo Zaldivar Escola |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
PHOTOTHERMAL MICROSCOPY
Materials science Polymers and Plastics Organic Chemistry Laser pumping Photothermal therapy Laser Thermal diffusivity law.invention Characterization (materials science) Crystallinity purl.org/becyt/ford/2 [https] law visual_art Microscopy visual_art.visual_art_medium THERMAL DIFFUSIVITY POLYMER COMPOSITES Ceramic Composite material purl.org/becyt/ford/2.5 [https] |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| ISSN: | 0142-9418 |
| DOI: | 10.1016/j.polymertesting.2020.106378 |
| Popis: | It is proposed to transfer the capabilities of a high sensitivity photothermal technique, developed by the group and widely used in the study of thermal properties of ceramics, metals and glass, to the study of polymer composites. The technique uses a sensing beam for the measurement of the thermal response of the sample due to local effects induced by heating with a modulated pump laser. With a simple spatial sweep of the beams on the sample surface, information on a micrometric scale of the thermal diffusivity of the material, distribution of phases and pores is obtained. Post-process analysis allows calculating average values of relevant properties such as thermal diffusivity, degree of crystallinity and distribution of aggregates. These measurements are performed at low laser powers (of the order of micro watts) avoiding the damage of the studied samples and turning this technique into a powerful tool of non-destructive characterization. Fil: Zaldivar Escola, Facundo. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
| Databáze: | OpenAIRE |
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