Department

Department of Mechanical Engineering

First Advisor

Dr. Carl Frick

Description

Adhesi ve surfaces, inspired by biological micropatterned surfaces consisting of micron - sized pillars, were made using shape memory polymers (SMPs) to create a switchabl e adhesive surface. They were chosen because they are a (meth)acrylate based thermoset polymer with a short and dramatic transition of storage modulus with change of temperature. These samples were polymerized using a UV light and tested to define their th ermomechanical properties, specifically their storage modulus and transition point from glassy to rubbery regions . Using previous knowledge, many processes to create samples were attempted, using a sylgard - 184 silicone elastomer (PDMS) mold with the micro - pillar negative design pre - molded into it . Pictures were taken of these samples and molds using a scanning electron microscope (SEM), and an optical microscope. While a conclusive sample was not created, t he work done in this project provides a foundation f or further understanding and creation of micro pillar adhesive properties and shape memory polymers.

Comments

Oral Presentation, Wyoming NSF EPSCoR

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Adhesion Samples of Bioinspired Micropatterned Surfaces on Photopolymerized Shape Memory Polymers

Adhesi ve surfaces, inspired by biological micropatterned surfaces consisting of micron - sized pillars, were made using shape memory polymers (SMPs) to create a switchabl e adhesive surface. They were chosen because they are a (meth)acrylate based thermoset polymer with a short and dramatic transition of storage modulus with change of temperature. These samples were polymerized using a UV light and tested to define their th ermomechanical properties, specifically their storage modulus and transition point from glassy to rubbery regions . Using previous knowledge, many processes to create samples were attempted, using a sylgard - 184 silicone elastomer (PDMS) mold with the micro - pillar negative design pre - molded into it . Pictures were taken of these samples and molds using a scanning electron microscope (SEM), and an optical microscope. While a conclusive sample was not created, t he work done in this project provides a foundation f or further understanding and creation of micro pillar adhesive properties and shape memory polymers.