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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: To improve gel toughness, surface cross-linking of partially neutralized acrylic acid based superabsorbent polymers was performed by diethylene glycol diglycidyl ether.
Abstract: To improve gel toughness, surface cross-linking of partiallyneutralized acrylic acid based superabsorbent polymers (superabsorbent polymers, prepared by solution polymerization) was performed by diethylene glycol diglycidyl ether. Considering effective factors (treatment solution, surface cross-linker content, post-treatment temperature, and duration), a two-step surface modification procedure was performed on dried superabsorbent polymers particles. Attenuated total reflection–Fourier transform infrared spectroscopy has proved chemical cross-linking reaction. Mechanical properties have also been investigated. Besides, the modified rubber elasticity theory and Flory–Rehner equations have been used to investigate how they work in core–shell-like structure. The optimum condition provides at least a 100% raise in gel strength and appropriate absorbency.
37 citations
Cites background from "Mechanical Properties of Polymers a..."
...where G′, storage modulus, is a measure of reversibly elastic storable deformation energy and G′′, loss modulus, measures the irreversible energy dissipation([24,25])....
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01 Jan 2007
37 citations
TL;DR: The use of a new type of MM, named Conical Swiss Rolls (CSR), which allows the transmission and intensification of evanescent waves in electromagnetic nondestructive evaluation (eNDE).
Abstract: This paper proposes the study and implementation of a sensor with a metamaterial (MM) lens in electromagnetic nondestructive evaluation (eNDE). Thus, the use of a new type of MM, named Conical Swiss Rolls (CSR) has been proposed. These structures can serve as electromagnetic flux concentrators in the radiofrequency range. As a direct application, plates of composite materials with carbon fibers woven as reinforcement and polyphenylene sulphide as matrix with delaminations due to low energy impacts were examined. The evaluation method is based on the appearance of evanescent modes in the space between carbon fibers when the sample is excited with a transversal magnetic along z axis (TMz) polarized electromagnetic field. The MM lens allows the transmission and intensification of evanescent waves. The characteristics of carbon fibers woven structure became visible and delaminations are clearly emphasized. The flaws can be localized with spatial resolution better than λ/2000.
37 citations
Cites background from "Mechanical Properties of Polymers a..."
...Polymeric composites reinforced with carbon reinforcements show mechanical properties similar or higher than those of conventional metallic materials, because an advanced polymeric composite presents high strength-to-weight and stiffness-to-weight ratios [4]....
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TL;DR: In this article, the molecular structure of the synthesized plasticizers was confirmed using 1H NMR and FT-IR spectroscopy, and they showed potential as an alternative plasticizer for both polyvinyl chloride (PVC) and poly(lactic acid) (PLA) polymers.
37 citations
TL;DR: The effect of moisture content on the mechanical properties of starch/poly(hydroxyester ether) composite materials has been characterized in this article, where cornstarch with either 1 or 10% moisture content was extruded with PHEE and total moisture content during subsequent injection molding ranged from 1.0 to 10% (total solids basis).
37 citations