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Showing 1 to 20 of 107 for “"storage modulus"”.
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Functionalized Graphene: Characterization and Mechanical Reinforcement
… was well dispersed in these systems and provided storage modulus mechanical reinforcement of 150% at 1.0% loading which is higher than the level of reinforcement reported in comparable materials. This level of storage modulus mechanical reinforcement would require a 4% loading level of …
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Mechanical Performance of Industrial Hemp Fibre Reinforced Polylactide and Unsaturated Polyester Composites
… cellulose crystallinity. The average Young's modulus and thermal stability of all treated fibres increased compared with untreated fibres. This was considered to be as a result of densification of fibre cell walls due to the removal of non-cellulosic components during treatment. It was also …
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Solvent-Induced Crystallization of Poly(ether ether ketone)
… was determined that the initial decrease in the storage modulus was due to the incredible plasticization of the amorphous phase. When the films contained greater than 60 % of the ultimate crystallinity, the storage modulus was observed to increase as a result of the reinforcing effect of the …
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Manufacturing of Poly(vinylidene fluoride) and Evaluation of its Mechanical Properties
… films successfully measured changes in loss and storage modulus. In-situ creep testing measured an increase in stiffness while in-situ dynamic mechanical analysis (DMA) measured and overall decrease in loss and storage modulus. Differences in results between the two experiments are attributed to …
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Time dependence of nonlinear flow dynamics of near hard sphere suspensions
… low frequency terminal region where the linear storage modulus first exceeds the loss modulus and the high frequency cross over time where loss modulus exceeds the storage modulus. At low frequencies where the viscous behavior dominates, the onset of nonlinearities is driven by increases in rate …
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Dispersion of carbon nanotubes in vinyl ester polymer composites
… ropes, enhancing the electrical conductivity and storage modulus. However, excessive amounts of energy were found to damage CNTs, which negatively affected the properties of the composite. Based on these results the optimum dispersion energy inputs were determined for the different composite …
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Development of an Experimental and Computational Pipeline for Characterizing the Mechanical Properties and Micromechanical Environment within In Vitro 3D Printed Bone Tissue Engineered Scaffolds
… soaked controls for each geometry) to measure storage modulus, loss modulus, and the damping coefficient. The Voronoi geometry increased significantly in storage modulus when seeded for seven days compared to four days (p=0.0293). There was also an overall significant decrease in stiffness when …
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TiO2-doped Ionic Polymer-Metal Composite Actuator
… increasing the TiO2-content in the membrane. Storage modulus of dried TiO2-doped samples increases as increasing of amount of TiO2 in the samples, whereas storage modulus of hydrated samples are strongly related to level of water uptake. EIS measurements show that the conductivity of …
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Characterization and Fabrication of Scaffold Materials for Tissue Engineering
… and mechanical properties including Young’s modulus, storage modulus, water uptake profile, and degradation rate for PEUs of different structures were tested. Two different amino acids, phenylalanine and leucine, and various diol lengths were used in the synthesis of these PEUs. In this …
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Nanotube reinforced thermoplastic polymer matrix composites
… a maximum increase of 93% in tensile modulus with single wall nanotubes (SWNTs). The chemical functionalization study shows a larger increase in storage modulus for functionalized SWNTs as compared to purified SVWNTs with respective increases of 9% and 44% in storage modulus. Improved …
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TEMPO-oxidized Nanocelluloses: Surface Modification and use as Additives in Cellulosic Nanocomposites
… behavior and a 22-fold increase in tensile storage modulus in the glass transition region of CAB. In contrast, hydrophobized TONc and MFC deteriorated the optical transmittance of CAB by ca 20% and increased its tensile storage modulus in the glass transition region by only 3.5 and 7 times …
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Investigating Human Cell Influence on the Micromechanical Environment of a 3D-Printed Bone Tissue Model
… 14-, and 21-day timepoints to assess changes in storage modulus, loss modulus, and damping coefficient (tanδ). SEM was used to evaluate cell adhesion, mineral deposition, and scaffold degradation, while μCT characterized porosity, strut thickness, and trabecular separation after long-term …
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Direct Computations of Spatially Resolved Viscoelastic Moduli of Biomolecular Condensates
… we examine how network topology influences storage modulus, loss modulus, crossover frequency, and relaxation time spectra. Our results reveal a strong correlation between topological features and mechanical response, with the condensate interior exhibiting higher stiffness and faster …
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Gel Development Using Cellulose Nanocrystals
… Due to its mechanical properties with Young modulus in the range of 120-160 GPa and proven biocompatibility, CNC is an attractive nanoparticle for many applications. In the acid-based method of CNC production, the particles develop naturally negative charges, inducing an electrostatic …
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Partially-Fluorinated Polyimides using Aliphatic Diamines
… when compared to existing materials, displaying storage modulus values of 1640 - 2740 MPa. In addition, both series show above normal molecular weights with values of 11 - 260 KDa for most of the films. This lends support to the justification for the above average mechanical performances reported.
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Synthesis and Characterization of Methacrylated Hyaluronan-Based Hydrogels for Tissue Engineering
… in regards to viscosity, solubility, shear modulus, and compression strength. To test HA-AEMA potential for use of tissue engineering applications involving stem cells, human dental pulp stem cells (DPSCs) were exposed to both HA-AEMA macromer and hydrogels for cytotoxicity and encapsulation …
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Development of High-Strength Composites with Sustainable Fibers for Structural Applications
… had around 15% higher tensile strength and modulus, along with a 30% enhancement in storage modulus than untreated ones. Additionally, a 25% reduction in water uptake was witnessed in MA-treated aspen-derived composites. Successfully 3D-printed biocomposites with up to 30% fiber loading were …
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Rethinking Plant-Based Materials Production: Selective Growth of Tunable Materials Using Cell Culture Techniques
… with hormone levels of the nutrient medium. The storage modulus of high-hormone samples presenting vascular cell types was elevated at 404.7 MPa ± 146.9 compared to low-hormone samples (P=0.033) with storage modulus measuring at 135.3 ± 57.4 MPa. Hormone levels also impacted growth potential and …
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Verarbeitung und Eigenschaften von Faserverbundkunststoffen mit Elastomermatrix
… samples did not exhibit a significant drop in storage modulus with temperature.For a pneumatic muscle with symmetrical laminate construction the expansion behavior of flexible E-FRP structures is described. A model for the expansion of such structures, which takes into account the matrix …
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Dynamic mechanical analysis of magnetic tapes at ultra-low frequencies
… using a Fourier transform program. The elastic modulus (E), storage modulus (E'), loss modulus (E"), and loss tangent (tan 8) were obtained from the time delay for each of the DMA experiments</p>
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