Modeling of the elastic stiffness of biobased polymer nanocomposites

Georgiopoulos, Panayiotis; Kontou, E.

doi:10.1177/0731684414520823

Cited by 6 publications

(6 citation statements)

References 42 publications

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“…It has been proven that impressive mechanical enhancement can be achieved by incorporating inorganic particulate fillers into a polymeric matrix. Potential types of particulate fillers are micro/nano-SiO 2 , glass, Al 2 O 3 , Mg(OH) 2 , and CaCO 3 particles, carbon nanotubes, and layered silicates [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. The reinforcing mechanism of polymer particulate composites has been the subject of numerous works in terms of micromechanical models for the evaluation of the elastic constants of the composites with varying volume fraction [ 10 , 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Silica Particle Size on the Mechanical Enhancement of Polymer Nanocomposites

et al. 2023

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In the present work, SiO2micro/nanocomposites based on poly-lactic acid (PLA) and an epoxy resin were prepared and experimentally studied. The silica particles were of varying sizes from the nano to micro scale at the same loading. The mechanical and thermomechanical performance, in terms of dynamic mechanical analysis, of the composites prepared was studied in combination with scanning electron microscopy (SEM). Finite element analysis (FEA) has been performed to analyze the Young’s modulus of the composites. A comparison with the results of a well-known analytical model, taking into account the filler’s size and the presence of interphase, was also performed. The general trend is that the reinforcement is higher for the nanosized particles, but it is important to conduct supplementary studies on the combined effect of the matrix type, the size of the nanoparticles, and the dispersion quality. A significant mechanical enhancement was obtained, particularly in the Resin/based nanocomposites.

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Section: Introductionmentioning

confidence: 99%

The Effect of Silica Particle Size on the Mechanical Enhancement of Polymer Nanocomposites

et al. 2023

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“…Potential types of particulate fillers, either inorganic or organic, are silica particles, glass, Al 2 O 3 , Mg(OH) 2 , and CaCO 3 particles, carbon nanotubes, and nanoclays. [1][2][3][4] Several kinds of carbon/based nanofillers, such as carbon nanotubes (CNTs), carbon nanofibers (CNFs), and graphene oxide (GO), have been employed as additives into a polymer, to improve the mechanical, thermal, and electrical properties. 5 This enhancement is a result of their unique structures and special properties, such as low density, high aspect ratio high modulus, tensile strength, and significant electrical and thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Study of the matrix–particle interactions of polymer nanocomposites in the low‐frequency regime

Kontou

2024

Polymer Composites

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In this study, the dynamic moduli, in a wide frequency scale, of two series of polymer nanocomposites were qualitatively discussed. The dynamic mechanical analysis experimental results of polylactic acid (PLA)/silica nanocomposites, as well as PLA/graphene oxide‐carbon nanotubes hybrid nanocomposites, were employed. The study has been focused on the low‐frequency regime, estimating the terminal incline of the storage and loss modulus. In addition, the relative position of the two dynamic moduli was examined and results about the nanofiller's dispersion quality, as well as their interaction with the matrix were extracted. The consequence of nanofiller kind, loading, and distribution quality on the mechanical enhancement was thoroughly studied. In addition, the storage modulus master curves could be simulated by a model from the literature, considering the topological constraints of an entangled polymer reinforced by nanoparticles. It was shown that by adopting the linear contribution of the free and adsorbed chains to the relaxation function, the details of the master curves could be captured in the entire frequency range, quite effectively. The estimated model parameter values confirmed the analysis of the matrix–particle interactions.Highlights The SiO2 size effect on the terminal zone slope of the dynamic moduli. Successful description of the dynamic moduli by the tube reptation concept. Analysis of the physical meaning of the model parameter values. Relation between SiO2 dispersion quality and molecular motion restriction. Matrix‐particle interactions is the governing mechanism of enhancement.

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“…The chance offered to engineer materials with enhanced mechanical properties and tailored functionalities has been possible thanks to the integration of innovative micro- and nanofillers for reinforcing polymer matrices [ 21 , 22 ]. The advantages of combining polymer matrices and micro/nanoscale reinforcements to obtain resin-based composites have received significant attention for their applications in different industries ranging from biomedical devices to aerospace [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Highly Reinforced Acrylic Resins for Hard Tissue Engineering and Their Suitability to Be Additively Manufactured through Nozzle-Based Photo-Printing

Gallicchio,

Spinelli,

Russo

et al. 2023

Materials

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Mineralized connective tissues represent the hardest materials of human tissues, and polymer based composite materials are widely used to restore damaged tissues. In particular, light activated resins and composites are generally considered as the most popular choice in the restorative dental practice. The first purpose of this study is to investigate novel highly reinforced light activated particulate dental composites. An innovative additive manufacturing technique, based on the extrusion of particle reinforced photo-polymers, has been recently developed for processing composites with a filler fraction (w/w) only up to 10%. The second purpose of this study is to explore the feasibility of 3D printing highly reinforced composites. A variety of composites based on 2,2-bis(acryloyloxymethyl)butyl acrylate and trimethylolpropane triacrylate reinforced with silica, titanium dioxide, and zirconia nanoparticles were designed and investigated through compression tests. The composite showing the highest mechanical properties was processed through the 3D bioplotter AK12 equipped with the Enfis Uno Air LED Engine. The composite showing the highest stiffness and strength was successfully processed through 3D printing, and a four-layer composite scaffold was realized. Mechanical properties of particulate composites can be tailored by modifying the type and amount of the filler fraction. It is possible to process highly reinforced photopolymerizable composite materials using additive manufacturing technologies consisting of 3D fiber deposition through extrusion in conjunction with photo-polymerization.

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Modeling of the elastic stiffness of biobased polymer nanocomposites

Cited by 6 publications

References 42 publications

The Effect of Silica Particle Size on the Mechanical Enhancement of Polymer Nanocomposites

The Effect of Silica Particle Size on the Mechanical Enhancement of Polymer Nanocomposites

Study of the matrix–particle interactions of polymer nanocomposites in the low‐frequency regime

Highly Reinforced Acrylic Resins for Hard Tissue Engineering and Their Suitability to Be Additively Manufactured through Nozzle-Based Photo-Printing

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