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Small strain mechanical properties of latex-based nanocomposite films

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Dynamic mechanical analysis for rapid assessment of the time-dependent recovery behavior of shape memory polymers

John Christopher Plummer, Charly David Azra

Thermally activated shape memory polymers (SMPs) recover from a secondary shape induced by mechanical deformation to a primary equilibrium shape when they are heated to their actuation temperature. In certain applications, for example in the biomedical fie ...

Iop Publishing Ltd2013

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The thermomechanical response of a series of thermally activated shape memory polyurethanes (SMPUs), determined by dynamic mechanical analysis (DMA), has been adjusted by systematic modification of the molecular architecture. It is argued that the free rec ...

Elsevier2013

Strain response of polycrystalline barium titanate (BaTiO3) was investigated under high unipolar electric field (0 to 4 kV/mm) and compressive stress (0 to 400 MPa) in the temperature range from 25 to 160 degrees C. In the vicinity of the Curie point (T-C) ...

American Institute of Physics2012

Size effects in indentation of hydrated biological tissues

Matteo Galli

Fluid flow in biological tissues is important in both mechanical and biological contexts. Given the hierarchical nature of tissues, there are varying length scales at which time-dependent mechanical behavior due to fluid flow may be exhibited. Here, spheri ...

Cambridge University Press2012

Cellular biocomposites from polylactide and microfibrillated cellulose

Pierre-Etienne Bourban, John Christopher Plummer, Razvan Cristian Neagu, Carole Boissard

This paper describes the production of "green" microfibrillated cellulose-reinforced polylactide cellular biocomposites using a wet mixing technique combined with super-critical carbon dioxide foaming. The effect of composition on the morphology, density a ...

SAGE Publications2012

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The thermomechanical recovery behavior of a commercial cold-curing structural epoxy adhesive was investigated. Exposing the adhesive to temperatures above the glass transition temperature T-g significantly increased the latter although the curing degree in ...

2012

Small strain mechanical properties of latex-based acrylic nanocomposite films

John Christopher Plummer, Riccardo Ruggerone

A waterborne latex-based technique has been used to prepare acrylic films with laponite contents up to about 25 vol%. The laponite was attached to the surfaces of the latex particles, giving a cellular arrangement of laponite-rich regions at high laponite ...

2011

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Harmonic tension–compression tests at 0.1, 0.5 and 1 Hz on hydrated bovine periodontal ligament (PDL) were numerically simulated. The process was modeled by finite elements (FE) within the framework of poromechanics, with the objective of isolating the con ...

Elsevier2011

Influence of the elastic properties of the phases on the coefficient of thermal expansion of a metal matrix composite

Martin Vetterli, Ludger Weber, Reza Tavangar Hamzehkolaei

Copper matrix composites reinforced with low thermal expansion ceramic particles, i.e. SiO2, AIN and diamond, in the range of ceramic volume fractions between 0.55 and 0.85 have been prepared by gas pressure infiltration and are characterized by their coef ...

Elsevier2011

In this project we target a desired viscoelastic properties of PDMS for the application of thin wall membrane uses as a container to support soft test sample biomaterials during mechanical compression tests. The biocompatible PDMS membrane is produced by a ...

2011