Porous Epoxy Thermosets Obtained by a Polymerization-Induced Phase Separation Process of a Degradable Thermoplastic Polymer

Loera, A. Garcia; Cara, Fabien; Dumon, Michel; Pascault, J. P.

doi:10.1021/ma011567i

Cited by 84 publications

(48 citation statements)

References 15 publications

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“…In order to produce open-celled porous polymeric materials, numerous techniques have been developed, including chemically and/or thermally induced phase separation [8,9], fiber bonding [10], solvent evaporation [11], gas foaming [12,13] and so on.…”

Section: Introductionmentioning

confidence: 99%

Preparation of hydrophilic/hydrophobic porous materials

Zhang

et al. 2008

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 99%

Preparation of hydrophilic/hydrophobic porous materials

Zhang

et al. 2008

Journal of Colloid and Interface Science

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“…These results are also presented in Table 2. In this study, the Tgs were measured as the inflection points of the heat flow curves [32,33]. Table 2 clearly shows that the Tgs of extruded Nylon-6 has increased from 80 ∘ C to 130 ∘ C maximum with the reinforcement of 1 wt% rod Si 3 N 4 nanoparticles.…”

Section: Resultsmentioning

confidence: 96%

Influence of SiC/Si₃N₄ Hybrid Nanoparticles on Polymer Tensile Properties

Rangari

Yousuf

Jeelani

2013

Journal of Composites

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Nanostructured silicon carbide (SiC)/silicon nitride (Si 3 N 4 ) hybrid nanoparticles exhibit a high-potential for reinforcement of polymers. In the present investigation, silicon carbide ( -SiC) nanoparticles (∼30 nm) were sonochemically coated on acicular silicon nitride (∼100 nm × 800 nm) particles to increase the thermal and mechanical properties of Nylon-6 nanocomposite fibers. To produce Nylon-6/(SiC/Si 3 N 4 ) nanocomposite fibers, we have followed a two-step process. In the first step, SiC nanoparticles were coated on Si 3 N 4 nanorods using a sonochemical method and Cetyltrimethylammonium Bromide surfactant. In the second step, the SiC coated Si 3 N 4 hybrid nanoparticles were blended with Nylon-6 polymer and extruded in the form of nanocomposite polymer fibers. The nanocomposite fibers were uniformly stretched and stabilized using a two-set Godet roll machine. The diameters of the extruded neat Nylon-6 and SiC/Si 3 N 4 /Nylon-6 nanocomposite fibers were measured using a scanning electron microscope and then tested for their tensile and thermal properties. These results were compared with the neat Nylon-6 polymer fibers. These results clearly indicate that the as-prepared nanocomposite polymer fibers are much higher in tensile strength (242%) and Young's modulus (716%) as compared to the neat polymer fibers.

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“…Dans un grand nombre de publications (de la chimie des matériaux ( [2][3][4]), aux procédés [5] età la mécanique) dédiéesà ces matériaux, on retrouve au moins une image MEB de la structure du matériau pour illustrer l'importance du procédé d'élaboration sur la structure générée ou l'effet de cette structure sur la réponse macroscopique. De nombreux articles décrivent ces microstructures et les ouvrages de référence de Gibson et Ashby [6] et de Mills [7] font une bonne synthèse des microstructures que l'on peut retrouver dans les matériaux cellulaires existants.…”

Section: Analyse Des Dommages Aux Différenteś Echellesunclassified

Comportement des matériaux cellulaires sous sollicitations dynamiques. Partie 2 : approche multi-échelles

Viot

2011

Mécanique & Industries

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible.This is an author-deposited version published in: http://sam.ensam.eu Handle ID: .http://hdl.handle.net/10985/8272 To cite this version :Philippe VIOT -Comportement des matériaux cellulaires sous sollicitations dynamiques. Partie 2 : approche multi-échelles -Mécanique et Industries -Vol. 12, n°4, p.247-264 -2011 Any correspondence concerning this service should be sent to the repository Résumé -La méthodologie proposée pour l'étude du comportement de matériaux cellulaires sous sollicitation dynamique est abordée par une approche multi-échelles. Le comportement des mousses polymèreś etudiées dépend du matériau constitutif, et de sa structure poreuse. Les matériaux cellulaires de l'étude sont constitués de grains millimétriques poreux ; le coeur de ces grains est constitué de cellules microscopiques. La méthodologie proposée viseà reproduire la morphologie multi-échelles du matériau cellulaire, celles des grains et des cellules, d'implémenter des modèles de comportement simplesà ces différenteś echelles afin de reproduire les phénomènes physiques complexes observés et la réponse macroscopique du matériau. L'observation et l'analyse des phénomènes locaux est un travail préparatoireà la modélisation multi-échelles. Cet article décrit les méthodes expérimentales et numériques qui ontété développées pour l'observation fine de la structure des matériaux cellulaires, et quantifier des déformations et des dommages de ces structuresà l'échelle des cellules et des grains. Deux approches de modélisation ontété ensuite envisagées ; un modèleéléments-finis pour décrire la structure des grains, et une autre approche numérique plus originale qui s'appuie sur la méthode deséléments discrets pour représenter la structure microscopique des cellules. Mots clés :Matériaux cellulaires / mousses / microtomographie / modélisation multi-échelles / modélisationéléments-finis / modélisationéléments discrets Abstract -Behaviour of cellular material under dynamic loadings. Part 2: a multi-scale approach. A multi scale methodology is proposed for the study of the cellular material behavior under dynamic loading. The behavior of polymeric foams studied depends on the constitutive material and the morphology of the porous structure. The cellular material of this study is constituted of millimetric porous beads, these beads are themselves constituted of microscopic closed cells. The methodology proposed to model the multi scale morphology of the structure (the scales of beads and cells) of the cellular material; it consists in implementing simple mechanical models at the different scales to reproduce the complex physical phenomenon observed and to model the macroscopic response of the foam. The observation and the analysis of physical phenomenon is the first step of the multi scale modeling. This paper describes the experimental and numerical methods used to observe and describe the structure ...

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Porous Epoxy Thermosets Obtained by a Polymerization-Induced Phase Separation Process of a Degradable Thermoplastic Polymer

Cited by 84 publications

References 15 publications

Preparation of hydrophilic/hydrophobic porous materials

Preparation of hydrophilic/hydrophobic porous materials

Influence of SiC/Si₃N₄ Hybrid Nanoparticles on Polymer Tensile Properties

Comportement des matériaux cellulaires sous sollicitations dynamiques. Partie 2 : approche multi-échelles

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Porous Epoxy Thermosets Obtained by a Polymerization-Induced Phase Separation Process of a Degradable Thermoplastic Polymer

Cited by 84 publications

References 15 publications

Preparation of hydrophilic/hydrophobic porous materials

Preparation of hydrophilic/hydrophobic porous materials

Influence of SiC/Si3N4 Hybrid Nanoparticles on Polymer Tensile Properties

Comportement des matériaux cellulaires sous sollicitations dynamiques. Partie 2 : approche multi-échelles

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Product

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Influence of SiC/Si₃N₄ Hybrid Nanoparticles on Polymer Tensile Properties