Publication: Accurate Evaluation of Dynamics and Specific Interactions in PLA/TiO2 Nanocomposites
dc.affiliation.dpto | UC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Química | es |
dc.affiliation.grupoinv | UC3M. Grupo de Investigación: Materiales compuestos poliméricos e interfases | es |
dc.contributor.author | Segura Gonzalez, Edwin Ariel | |
dc.contributor.author | Teno Díaz, Jorge | |
dc.contributor.author | González Benito, Francisco Javier | |
dc.contributor.author | Olmos Díaz, Dania | |
dc.contributor.funder | Ministerio de Economía y Competitividad (España) | es |
dc.date.accessioned | 2021-06-23T08:28:21Z | |
dc.date.available | 2021-06-23T08:28:21Z | |
dc.date.issued | 2017-07-15 | |
dc.description.abstract | Near infrared spectroscopy in the transmission mode was used to study the effect of the presence of TiO2 nanoparticles on the dynamics of Polylactic Acid (PLA) in PLA/TiO2 nanocomposites. The variation of IR absorbance of certain bands, the average energy of those absorptions (< ν >, cm-1) and two-dimensional Infrared (2D IR) correlation spectroscopy as a function of temperature and TiO2 content (0, 1, 5 and 10% wt) were used. Thermal transitions associated to the glass transition (64 ℃) and cold crystallization temperatures (123 ℃) are clearly identified from the analysis of integrated absorbance of bands at 4770 and 4725 cm-1, assigned to amorphous phase, as they were more sensitive to temperature changes. The band at 4440 cm-1, related with the formation of crystalline regions, showed a better definition of the thermal transitions as well as the bands at 4307 and 4255 cm-1 associated to the combination of C-H wagging modes showed sharp changes, suggesting that transitions occur due to backbone conformational changes. The evolution of integrated absorbance of different bands in PLA-TiO2 nanocomposites as a function of temperature, seem to point out the presence of specific interactions between the C = O group and TiO2 nanoparticles. This effect is observed up to 1% wt whereas for higher loadings it is not possible to detect thermal transitions due to the scattered of the data for higher loadings of particles. | en |
dc.description.sponsorship | Authors gratefully acknowledge financial support from the Ministerio de Ciencia e Innovación (project MAT2010-16815) and the Ministerio de Economia y competitividad (Project MAT2014-59116-C2-1-R) and project number 2011/00287/002. | en |
dc.format.extent | 13 | |
dc.identifier.bibliographicCitation | Segura González, E. A., Teno, J., González-Benito, J. & Olmos. D. (2019). Accurate Evaluation of Dynamics and Specific Interactions in PLA/TiO2 Nanocomposites. Journal of Molecular Physics, 1(1), pp. 1-13. | en |
dc.identifier.doi | https://doi.org/10.36959/562/615 | |
dc.identifier.issn | 0026-8976 | |
dc.identifier.publicationfirstpage | 1 | |
dc.identifier.publicationissue | 1 | |
dc.identifier.publicationlastpage | 13 | |
dc.identifier.publicationtitle | Journal of Molecular Physics | en |
dc.identifier.publicationvolume | 1 | |
dc.identifier.uri | https://hdl.handle.net/10016/32914 | |
dc.identifier.uxxi | AR/0000022400 | |
dc.language.iso | eng | |
dc.publisher | Taylor & Francis | en |
dc.relation.projectID | Gobierno de España. MAT2010-16815 | es |
dc.relation.projectID | Gobierno de España. MAT2014-59116-C2-1-R | es |
dc.rights | © 2017 González EAS, et al. | |
dc.rights | Atribución 3.0 España | * |
dc.rights.accessRights | open access | en |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject.eciencia | Materiales | es |
dc.subject.eciencia | Química | es |
dc.subject.other | Polymer dynamics | en |
dc.subject.other | 2D-Infrared correlation spectroscopy | en |
dc.subject.other | Polylactic acid (PLA) | en |
dc.subject.other | Tio2 nanoparticles | en |
dc.title | Accurate Evaluation of Dynamics and Specific Interactions in PLA/TiO2 Nanocomposites | en |
dc.type | research article | * |
dc.type.hasVersion | VoR | * |
dspace.entity.type | Publication |
Files
Original bundle
1 - 1 of 1