Publication

Investigation of the preparation method and its effect on the mechanical properties of fiber-reinforced Hydrogels

2017
Student Projects

Abstract

This work aims to study the mechanical properties of two kinds of hydrogels, the first is based on natural polymers derived from decellularized bovine cartilage tissue and the second is based on synthetic polymers namely polyethyleneglycole dimethacrylate. In this project, we tried on the one hand to reinforce the hydrogels using fibers and on the other hand to optimize the mechanical properties by studying the influence of the mixing parameters. The first study focused on Polyethylene glycol di-methacrylate hydrogel. We found that higher mixing time resulted in increased strength and stiffness of this hydrogel with a rate of 11%. In a second study we investigated the influence of different NFC fiber concentrations on the young modulus of decellularied extracellular matrix based hydrogels.

Official source

https://infoscience.epfl.ch/entities/publication/7e8cae1f-444a-4cea-9123-eb91dad4e95a

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2017
Student Projects

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/7e8cae1f-444a-4cea-9123-eb91dad4e95a

About this result

Related concepts (31)

Polymer

A polymer (ˈpɒlᵻmər; Greek poly-, "many" + -mer, "part") is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. Due to their broad spectrum of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life. Polymers range from familiar synthetic plastics such as polystyrene to natural biopolymers such as DNA and proteins that are fundamental to biological structure and function.

Young's modulus

Young's modulus , the Young modulus, or the modulus of elasticity in tension or axial compression (i.e., negative tension), is a mechanical property that measures the tensile or compressive stiffness of a solid material when the force is applied lengthwise. It quantifies the relationship between tensile/compressive stress (force per unit area) and axial strain (proportional deformation) in the linear elastic region of a material and is determined using the formula: Young's moduli are typically so large that they are expressed not in pascals but in gigapascals (GPa).

Elastic modulus

An elastic modulus (also known as modulus of elasticity) is the unit of measurement of an object's or substance's resistance to being deformed elastically (i.e., non-permanently) when a stress is applied to it. The elastic modulus of an object is defined as the slope of its stress–strain curve in the elastic deformation region: A stiffer material will have a higher elastic modulus. An elastic modulus has the form: where stress is the force causing the deformation divided by the area to which the force is applied and strain is the ratio of the change in some parameter caused by the deformation to the original value of the parameter.

Related publications (4)

Investigation of the preparation method and its effect on the mechanical properties of fiber-reinforced Hydrogels

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Understanding effect of network structure of PolyEthylene Glycol Diacrylate hydrogels on cellular activities using bovine chondrocytes as a model system

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