The effect of titanium dioxide surface modification on the dispersion, morphology, and mechanical properties of recycled PP/PET/TiO2 PBNANOs
| Autor: | Manuela Zubitur, C.C. Puig, Victor Sebastian, Cristina Yus, Agurtzane Mugica, Eider Matxinandiarena, Orlando O. Santana, Maria Lluisa Maspoch, Alfonso David Loaeza, Alejandro J. Müller, Silvia Irusta |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials, Universitat Politècnica de Catalunya. Doctorat en Ciència i Enginyeria dels Materials, Universitat Politècnica de Catalunya. e-PLASCOM - Plàstics i Compòsits Ecològics, European Commission, Eusko Jaurlaritza, Universidad del País Vasco, Matxinandiarena, Eider [0000-0001-9009-7528], Yus, Cristina [0000-0002-1505-498X], Sebastian, Victor [0000-0002-6873-5244], Irusta, S. [0000-0002-2966-9088], Santana, Orlando [0000-0003-3040-6848], Müller, Alejandro J. [0000-0001-7009-7715], Matxinandiarena, Eider, Yus, Cristina, Sebastian, Victor, Irusta, S., Santana, Orlando, Müller, Alejandro J. |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Morphology
Materials science Polymers and Plastics tio2 nanoparticles immiscible polymer blends Nanoparticle 02 engineering and technology Blend 010402 general chemistry Enginyeria dels materials [Àrees temàtiques de la UPC] composites 01 natural sciences Article PBNANO lcsh:QD241-441 Contact angle chemistry.chemical_compound pet/pp/tio2 lcsh:Organic chemistry morphology crystallization kinetics Diòxid de titani tensile properties particles Coalescence (physics) Nanocomposite compatibilization Nanopartícules titanium dioxide technology industry and agriculture nanosilica General Chemistry 021001 nanoscience & nanotechnology carbon-black blend 0104 chemical sciences Chemical engineering chemistry Titanium dioxide Particle Surface modification Nanoparticles nanoparticles Polymer blend 0210 nano-technology |
| Zdroj: | Polymers Addi. Archivo Digital para la Docencia y la Investigación instname Digital.CSIC. Repositorio Institucional del CSIC Zaguán. Repositorio Digital de la Universidad de Zaragoza Polymers, Vol 11, Iss 10, p 1692 (2019) Volume 11 Issue 10 UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| Popis: | This article belongs to the Special Issue Eurofillers Polymer Blends. Titanium dioxide (TiO2) nanoparticles have recently appeared in PET waste because of the introduction of opaque PET bottles. We prepare polymer blend nanocomposites (PBNANOs) by adding hydrophilic (hphi), hydrophobic (hpho), and hydrophobically modified (hphoM) titanium dioxide (TiO2) nanoparticles to 80rPP/20rPET recycled blends. Contact angle measurements show that the degree of hydrophilicity of TiO2 decreases in the order hphi > hpho > hphoM. A reduction of rPET droplet size occurs with the addition of TiO2 nanoparticles. The hydrophilic/hydrophobic balance controls the nanoparticles location. Transmission electron microscopy (TEM_ shows that hphi TiO2 preferentially locates inside the PET droplets and hpho at both the interface and PP matrix. HphoM also locates within the PP matrix and at the interface, but large loadings (12%) can completely cover the surfaces of the droplets forming a physical barrier that avoids coalescence, leading to the formation of smaller droplets. A good correlation is found between the crystallization rate of PET (determined by DSC) and nanoparticles location, where hphi TiO2 induces the highest PET crystallization rate. PET lamellar morphology (revealed by TEM) is also dependent on particle location. The mechanical behavior improves in the elastic regime with TiO2 addition, but the plastic deformation of the material is limited and strongly depends on the type of TiO2 employed. This research was funded by the EU project REVALPET, POCTEFA EFA064-15 (Interreg VA). The UPV/EHU team gratefully acknowledges the financial contribution of the Basque Government through grant IT1309-19 and the funding of the European Union´s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 778092. |
| Databáze: | OpenAIRE |
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