Publication

Characterization of viscoelastic properties of PDMS silicon rubbers

2011
Student Projects

Abstract

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 custom made PDMS seal. This axisymmetric chamber is made by reaction injection molding. In this project student should synthesize different PDMS by changing some parameters and polymerization process and do some standard mechanical tests on them using INSTRON machine to optimize the viscoelastic properties of produced material to reach to the best composition with less viscosity modulus good stiffness and as thin as possible membrane.

Official source

https://infoscience.epfl.ch/entities/publication/f80d705c-36cb-424c-82d4-8f68159b4d2f

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2011
Student Projects

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/f80d705c-36cb-424c-82d4-8f68159b4d2f

About this result

Related concepts (32)

Viscoelasticity

In materials science and continuum mechanics, viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when undergoing deformation. Viscous materials, like water, resist shear flow and strain linearly with time when a stress is applied. Elastic materials strain when stretched and immediately return to their original state once the stress is removed. Viscoelastic materials have elements of both of these properties and, as such, exhibit time-dependent strain.

Silicone

A silicone or polysiloxane is a polymer made up of siloxane (−R2Si−O−SiR2−, where R = organic group). They are typically colorless oils or rubber-like substances. Silicones are used in sealants, adhesives, lubricants, medicine, cooking utensils, thermal insulation, and electrical insulation. Some common forms include silicone oil, silicone grease, silicone rubber, silicone resin, and silicone caulk.

Polymerization

In polymer chemistry, polymerization (American English), or polymerisation (British English), is a process of reacting monomer molecules together in a chemical reaction to form polymer chains or three-dimensional networks. There are many forms of polymerization and different systems exist to categorize them. In chemical compounds, polymerization can occur via a variety of reaction mechanisms that vary in complexity due to the functional groups present in the reactants and their inherent steric effects.

Related publications (6)

Characterization of viscoelastic properties of PDMS silicon rubbers

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