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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Canto, L. B.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2022INJECTION OVERMOLDED POLYMER-METAL HYBRID STRUCTURES
- 2018Composite surface pre-treatments: improvement on adhesion mechanisms and mechanical performance of metal-composite friction spot joints with additional film interlayercitations
- 2017Friction riveting (‘FricRiveting’) of 6056 T6 aluminium alloy and polyamide 6: influence of rotational speed on the formation of the anchoring zone and on mechanical performancecitations
- 2017On the Process-Related Rivet Microstructural Evolution, Material Flow and Mechanical Properties of Ti-6Al-4V/GFRP Friction-Riveted Jointscitations
- 2016Improvement of friction spot welding (FSpW) to join polyamide 6 and polyamide 66/carbon fibre laminatecitations
- 2016Influence of Rotational Speed on the Microstructure and Mechanical Performance of Friction-Riveted Thermosetting Composite Joints - Influencia da Velocidade de Rotacao do Rebite na Microestrutura e no Desempenho Mecanico de Juntas de Composito Termofixo Rebitadas por Friccaocitations
- 2016Influence of the Interlayer Film Thickness on the Mechanical Performance of AA2024-T3/CF-PPS Hybrid Joints Produced by Friction Spot Joining - Influencia da Espessura do Filme Polimerico Intermediario na Resistencia Mecanica de Juntas Hibridas de Alumínio 2024-T3 e CF-PPS Produzidas por Uniao Pontual por Friccaocitations
- 2016Friction Spot Joining of aluminum alloy 2024-T3 and carbon-fiber-reinforced poly(phenylene sulfide) laminate with additional PPS film interlayer: Microstructure, mechanical strength and failure mechanismscitations
- 2015Friction spot joining of aluminum AA6181-T4 and carbon fiber-reinforced poly(phenylene sulfide): Effects of process parameters on the microstructure and mechanical strengthcitations
- 2015Friction spot welding of carbon fiber-reinforced polyamide 66 laminatecitations
- 2014Improvement of the Friction Spot Welding (FSpW) to join Polyamide 6 and Polyamide 66/Carbon Fiber Laminate - Aperfeicoamento da Tecnica de Soldagem Pontual por Friccao (FSpW) para Uniao de Poliamida 6 e Laminado de Poliamida 66 com Fibra de Carbonocitations
- 2014FricRiveting of aluminum 2024-T351 and polycarbonate: Temperature evolution, microstructure and mechanical performancecitations
- 2013Reactive melt blending of PS‐POSS hybrid nanocompositescitations
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article
Reactive melt blending of PS‐POSS hybrid nanocomposites
Abstract
<jats:title>Abstract</jats:title><jats:p>Hybrid nanocomposites of polystyrene (PS) and methacryl phenyl polyhedral oligomeric silsesquioxane (POSS) were synthesized by reactive melt blending in the mixing chamber of a torque rheometer using dicumyl peroxide (DCP) as a free radical initiator and styrene monomer as a chain transfer agent. The effects of mixing intensity and composition on the molecular structure and morphology of the PS‐POSS hybrid nanocomposites were investigated. The degree of POSS hybridization (α<jats:sub>POSS</jats:sub>) was found to increase with the POSS content, DCP/POSS ratio, and rotor speed. For the PS‐POSS materials processed in the absence of styrene monomer, an increase in the α<jats:sub>POSS</jats:sub> led to a reduction in the molecular weight by PS chain scission, as a consequence of the free radical initiation. On the other hand, the use of styrene monomer as a chain transfer agent reduces the steric hindrance in the hybridization reaction between POSS and PS, enhancing the degree of POSS hybridization and avoiding PS degradation. The PS‐POSS morphology consists of nanoscale POSS clusters and particles and microscale crystalline POSS aggregates. PS‐POSS with higher α<jats:sub>POSS</jats:sub> values and lower amounts of nonbound POSS showed improved POSS dispersion, characterized by smaller interfacial thickness (<jats:italic>t</jats:italic>) and greater Porod inhomogeneity lengths (<jats:italic>l</jats:italic><jats:sub><jats:italic>p</jats:italic></jats:sub>). The processing‐molecular structure–morphology correlations analyzed in this study allow the POSS dispersion level in the PS‐POSS materials to be tuned by controlling the reactive melt blending through the choice of the processing conditions. These insights are very useful for the development of PS‐POSS materials with optimized performance. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013</jats:p>