Book•
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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20 May 2020
TL;DR: Dynamic Mechanical Analysis (DMA) is a powerful technique for understanding the viscoelastic properties of materials as discussed by the authors and has become a powerful tool for chemists, polymer and material scientists, and engineers.
Abstract: Dynamic Mechanical Analysis (DMA) is a powerful technique for understanding the viscoelastic properties of materials. It has become a powerful tool for chemists, polymer and material scientists, and engineers. Despite this, it often remains underutilized in the modern laboratory. Because of its high sensitivity to the presence of the glass transition, many users limit it to detecting glass transitions that can’t be seen by differential scanning calorimetry (DSC).
This book presents a practical and straightforward approach to understanding how DMA works and what it measures. Starting with the concepts of stress and strain, the text takes the reader through stress–strain, creep, and thermomechanical analysis. DMA is discussed as both the instrument and fixtures as well as the techniques for measuring both thermoplastic and thermosetting behavior. This edition offers expanded chapters on these areas as well as frequency scanning and other application areas. To help the reader grasp the material, study questions have also been added. Endnotes have been expanded and updated.
Features
Reflects the latest DMA research and technical advances
Includes case studies to demonstrate the use of DMA over a range of industrial problems
Includes numerous references to help those with limited materials engineering background
Demonstrates the power of DMA as a laboratory tool for analysis and testing
240 citations
01 Jan 1985
TL;DR: Pulsed deuteron NMR has recently been developed to become a powerful tool for studying molecular order and dynamics in solid polymers as discussed by the authors, which can be used to determine the complete orientational distribution function for the polymer chains from the analysis of NMR line shapes.
Abstract: Pulsed deuteron NMR is described, which has recently been developed to become a powerful tool for studying molecular order and dynamics in solid polymers. In drawn fibres the complete orientational distribution function for the polymer chains can be determined from the analysis of deuteron NMR line shapes. By analyzing the line shapes of 2H absorption spectra and spectra obtained via solid echo and spin alignment, respectively, both type and timescale of rotational motions can be determined over an extraordinary wide range of characteristic frequencies, approximately 10 MHz to 1 Hz. In addition, motional heterogeneities can be detected and the resulting distribution of correlation times can directly be determined.
238 citations
TL;DR: The natural fiber-reinforced polymer composite materials offered extensive range of properties which are suitable for large number of engineering application as mentioned in this paper, and the natural fibers have been abundantl...
Abstract: The natural fiber-reinforced polymer composite materials offered extensive range of properties which are suitable for large number of engineering application. The natural fibers have been abundantl...
237 citations
Cites methods from "Mechanical Properties of Polymers a..."
...Therefore, the rule of mixture was used to calculate the damping factor of composites (tan dc) by Nielsen equation (equation (2)) as follows.(94)...
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TL;DR: In this article, an acrylated epoxidized soybean oil (AESO), which has an average of 3.4 acrylates per triglyceride, was used as starting material.
235 citations
TL;DR: Polymeric scaffolds comprising poly(lactic acid) and nano-hydroxyapatite (HA) were prepared using the solvent-casting/salt-leaching technique and high-resolution TEM imaging revealed that the HA particles were ellipsoidal-shaped with needle-like morphologies.
231 citations