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5 results on '"Ane Miren Zaldua-Huici"'

1. The Importance of Coupling Agent on Tensile and Thermomechanical Performance of Annealed Composites Based on Poly(Lactic Acid)/Poly(Methyl Methacrylate) Matrix and Sisal Fiber Bundles

Author

Ander Orue, Jon Anakabe, Ane Miren Zaldua-Huici, Arantxa Eceiza, and Aitor Arbelaiz

Subjects
sisal fibers, polymer-matrix composites, mechanical properties, thermomechanical properties, Science, Textile bleaching, dyeing, printing, etc., TP890-933
Abstract

The main aim of this work is to study the importance of the coupling agent on tensile and thermomechanical performance of annealed composites based on poly (lactic acid)/poly (methyl methacrylate) matrix and sisal fiber bundles. As coupling agent poly (styrene‐co‐glycidyl methacrylate) copolymer was used. Results obtained in the current study suggested that the presence of the copolymer is crucial to form a strong adhesion between the fibers and polymeric matrix and consequently to improve both thermomechanical performance and tensile properties after annealing process. It must highlight that the estimated heat deflection temperature (HDT) of annealed composite with 40 wt% of fiber increased around 40 ºC respect to respect to commercial neat PLA.

Published
2022
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2. The Importance of Fiber/Matrix Adhesion and Annealing Process in Water Uptake of PLA/PMMA Matrix Composites Reinforced with Sisal Fibers: The Effect of Coupling Agent Addition

Author

Ander Orue, Jon Anakabe, Ane Miren Zaldua-Huici, Arantxa Eceiza, and Aitor Arbelaiz

Subjects
sisal fibers, polymer-matrix composites, water uptake, mechanical properties, poly(lactic acid), poly(methyl methacrylate), Science, Textile bleaching, dyeing, printing, etc., TP890-933
Abstract

With the aim to open new applications possibilities to novel biocomposites based on PLA/PMMA matrix and reinforced with sisal fibers, it was studied the effect of water immersion aging on biocomposite tensile properties. In the current study it was evidenced the importance of the annealing process and fiber/matrix adhesion on the mechanical performance of composites after immersing in water for around 7 months. The presence of the copolymer and the annealing process led to the minor extent of damage of mechanical properties of prepared biocomposites. Results obtained in the current study suggested that although the amount of copolymer incorporated in composites was low, the presence of copolymer is crucial to improve fiber/matrix adhesion and consequently the mechanical performance of composites after immersing in water. It was observed that even though the water uptake damaged the interfacial adhesion, leading to the tensile strength reduction; however, annealed composite with 30 wt% of fiber and modified with the copolymer showed a strength value of around 53.5 MPa. It must highlighted that even though water aged for 7 months, the annealed composite with copolymer showed yet a higher strength value than dried commercial mineral-filled PP composites reported in the literature.

Published
2022
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3. The Importance of Coupling Agent on Tensile and Thermomechanical Performance of Annealed Composites Based on Poly(Lactic Acid)/Poly(Methyl Methacrylate) Matrix and Sisal Fiber Bundles

Author

Arantxa Eceiza, Jon Anakabe, Ane Miren Zaldua-Huici, Aitor Arbelaiz, and Ander Orue

Subjects
Materials science, Materials Science (miscellaneous), Poly(methyl methacrylate), Lactic acid, Matrix (chemical analysis), chemistry.chemical_compound, chemistry, visual_art, Ultimate tensile strength, visual_art.visual_art_medium, Coupling (piping), Methyl methacrylate, Composite material, Sisal fiber
Abstract

The main aim of this work is to study the importance of the coupling agent on tensile and thermomechanical performance of annealed composites based on poly (lactic acid)/poly (methyl methacrylate) ...

Published
2021
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4. Preparation and characterization of composites based on poly(lactic acid)/poly(methyl methacrylate) matrix and sisal fiber bundles: The effect of annealing process

Author

Ander Orue, Aitor Arbelaiz, Jon Anakabe, Arantxa Eceiza, and Ane Miren Zaldua-Huici

Subjects
Materials science, Annealing (metallurgy), Composite number, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Poly(methyl methacrylate), 0104 chemical sciences, Lactic acid, chemistry.chemical_compound, chemistry, visual_art, Ceramics and Composites, visual_art.visual_art_medium, Composite material, Methyl methacrylate, 0210 nano-technology, Sisal fiber
Abstract

The interest on poly(lactic acid) (PLA)/poly(methyl methacrylate) (PMMA) blends has increased during the last years due to their promising properties. The novelty of the current work focuses on the preparation and characterization of biocomposites based on PLA/PMMA matrix and NaOH-treated sisal fibers. The effect of the addition of treated sisal fibers on the physico-mechanical properties of high polylactide content composites was studied. For this purpose, PLA/PMMA blend (80/20 wt%) was prepared by melt-blending and reinforced with different fiber contents. Although composites showed interesting specific tensile properties, the estimated heat deflection temperature (HDT), that is, the maximum temperature at which a polymer system can be used as a rigid material, barely increased 4°C respect to unreinforced system. After the annealing process, the HDT of the unreinforced polymer blend increased around 25°C, whereas the composites showed an increase of at least 38°C. Nonetheless, the specific tensile strength of composite decreased approximately 48% because the adhesion between fiber and polymer matrix was damaged and cracks were formed during annealing process.

Published
2020
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5. Melt blending of polylactide and poly(methyl methacrylate): Thermal and mechanical properties and phase morphology characterization

Author

Jon Anakabe, Arantxa Eceiza, Aitor Arbelaiz, and Ane Miren Zaldua Huici

Subjects
Materials science, Polymers and Plastics, Scanning electron microscope, General Chemistry, Dynamic mechanical analysis, Poly(methyl methacrylate), Surfaces, Coatings and Films, Hildebrand solubility parameter, chemistry.chemical_compound, Differential scanning calorimetry, chemistry, visual_art, Materials Chemistry, visual_art.visual_art_medium, Composite material, Methyl methacrylate, Fourier transform infrared spectroscopy, Glass transition
Abstract

Blends of polylactide with poly(methyl methacrylate), PLA/PMMA, were prepared by a semi-industrial twin screw extruder and afterwards were injection molded. Blends were studied using different techniques as Fourier Transform Infrared Spectroscopy (FTIR), Dynamic Mechanical Analysis (DMA), Differential Scanning Calorimetry (DSC), Scanning Electron Microscopy (SEM), and mechanical properties by means of tensile and impact tests, were also studied. This work helped better understanding of apparently contradictory results reported in the literature for PLA/PMMA blends prepared by melt compounding. DSC first heating scan and DMA results showed partially miscible blends, whereas the second DSC heating scan showed miscible blends. For miscible blends, Tg values were predicted using Gordon-Taylor equation. On the other hand, Small and Van Krevelen approaches were used to estimate the solubility parameters of neat PLA and neat PMMA, and Flory-Huggins interaction parameter was calculated from solubility parameters. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42677.

Published
2015
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