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Mechanical Properties of Polymers and Composites
14 Dec 1993-
TL;DR: In this article, the authors discuss various mechanical properties of fiber-filled composites, such as elastic moduli, creep and stress relaxation, and other mechanical properties such as stress-strain behavior and strength.
Abstract: Mechanical Tests and Polymer Transitions * Elastic Moduli * Creep and Stress Relaxation * Dynamical Mechanical Properties * Stress-Strain Behaviour and Strength * Other mechanical Properties * Particulate-Filled Polymers * Fiber- Filled Composites and Other Composites.
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TL;DR: In this article, multi-walled carbon nanotubes (MWCNTs) were readily dispersed and distributed in the high density polyethylene (HDPE) matrix and a very low (
29 citations
TL;DR: In this paper, the strength of films extruded from powder blends of corn zein or corn gluten meal (CGM) with low-density polyethylene was investigated, and the tensile strength, percent elongation at break, and elastic modulus of the extruded films were measured.
Abstract: The strength of films extruded from powder blends of corn zein or corn gluten meal (CGM) with low-density polyethylene was investigated. Tensile strength, percent elongation at break, and elastic modulus of the extruded films were measured. The tensile strength decreased from 13 MPa to ≈10.5 MPa with zein addition, while CGM addition resulted in tensile strength of ≈6 MPa. The higher the level of biological material (CGM or zein) in the films the lower the tensile properties. Films containing CGM exhibited significantly lower tensile properties than those containing zein. Extrusion processing of biological films is a step toward commercial viability.
29 citations
Cites background from "Mechanical Properties of Polymers a..."
...Thus, this material will give a higher macroscopic strain than the polymer with no fillers (Willett 1994; Willett and Westhoff 1994)....
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TL;DR: A series of poly(methyl methacrylate) (PMMA) blends have been prepared with different compositions viz., 5, 10, 15, and 20 wt % ethylene vinyl acetate (EVA) copolymer by melt blending method in Haake Rheocord as mentioned in this paper.
Abstract: A series of poly(methyl methacrylate) (PMMA) blends have been prepared with different compositions viz., 5, 10, 15, and 20 wt % ethylene vinyl acetate (EVA) copolymer by melt blending method in Haake Rheocord. The effect of different compositions of EVA on the physico-mechanical and thermal properties of PMMA and EVA copolymer blends have been studied. Differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA) has been employed to investigate the phase behavior of PMMA/EVA blends from the point of view of component specific interactions, molecular motions and morphology. The resulting morphologies of the various blends also studied by optical microscope. The DSC analysis indicates the phase separation between the PMMA matrix and EVA domains. The impact strength analysis revealed a substantial increase in impact strength from 19 to 32 J/m. The TGA analysis reveals the reduction in onset of thermal degradation temperature of PMMA with increase in EVA component of the blend. The optical microscope photographs have demonstrated the PMMA/EVA system had a microphase separated structure consisting of dispersed EVA domains within a continuous PMMA matrix. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
29 citations
Abstract: 3-D nanocomposite scaffolds have recently had wide applications in bone tissue engineering. In this study, 58S bioactive glass nanoparticles (nBGs) were synthetized using sol-gel method and...
28 citations
Cites background from "Mechanical Properties of Polymers a..."
...and result in the formation of micro cracks and reduce of the nanocomposites strength [30]....
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01 Jan 2013
TL;DR: In this paper, the creep strain model of power-law was successfully used to predict the long-term creep behavior of natural fiber/thermoset composites and the experimental data was cross-matched against composite models.
Abstract: The abundant availability and accessibility of natural fibers are the major reasons for an emerging new interest in sustainable technology. This research focuses on kenaf nature fiber and it's composite with unsaturated polyester resin. The results show that styrene concentration is an important parameter that affects the curing behavior and mechanical properties of unsaturated polyester resin. The experimental data was cross-matched against composite models. The results show a good correlation with Hirsch's model. The values obtained for diffusion coefficients were in the range of 10-12 m2/sec. The creep strain model of power-law was successfully used to predict the long-term creep behavior of natural fiber/thermoset composites.
28 citations