Huang / Yang / Fu Polyurethane Shape Memory Polymers

1. Auflage 2012
ISBN: 978-1-4398-3801-3
Verlag: Taylor & Francis
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 383 Seiten

Shape memory polymers (SMPs) are some of the most important and valuable engineering materials developed in the last 25 years. These fascinating materials demonstrate remarkably versatile properties—including capacity for actuation and stimulus responsiveness—that are enabling technologists to develop applications used to explore everything from the outer reaches of space to the inside of the human body.
Polyurethane Shape Memory Polymers details the fundamentals of SMP makeup, as well as their shape-recovery features and their seemingly endless potential for use in applications ranging from the macro- to submicron scales. With an abundance of illustrations and vivid pictures to explain how SMPs and their composites work and how they can be used, this book covers:

- History and most recent developments in SMPs

- Thermomechanical properties and behavior of the polymers and their composites

- Modification of SMPs and novel actuation mechanisms

- Large-scale surface pattern generation

- Multi-shape memory effect

- Fabrication techniques

- Characterization of composites

A must-have reference for anyone working in the materials science and engineering fields, this book outlines the properties—such as light weight, low cost, and ability to handle high strain—that make the easily processed SMPs so useful in fields including aerospace, biomedicine, and textiles. It is intended to help readers understand and apply the knowledge and techniques presented to develop new innovations that will further benefit society.

Zielgruppe

Polyurethane Shape Memory Polymers, Materials Science, Polymer Engineering

Autoren/Hrsg.

Huang, W.M.

Yang, Bin

Fu, Yong Qing

Fachgebiete

• Naturwissenschaften Chemie Organische Chemie Polymerchemie
• Technische Wissenschaften Maschinenbau | Werkstoffkunde Technische Mechanik | Werkstoffkunde Materialwissenschaft: Polymerwerkstoffe
• Technische Wissenschaften Verfahrenstechnik | Chemieingenieurwesen | Biotechnologie Technologie der Kunststoffe und Polymere

Inhaltsverzeichnis

Introduction
Shape Memory Materials and Shape Memory Polymers
Mechanisms of Shape Memory Effects in Shape Memory Polymers
Typical Applications of Shape Memory Polymers
Polyurethane Shape Memory Polymers
Outline of Book

Thermomechanical Behavior of Polyurethane Shape Memory Polymer
Glass Transition Temperature and Thermal Stability
Dynamic Mechanical Properties
Uniaxial Tension in Glass State
Uniaxial Tension in Rubber State
Recovery Tests

Effects of Moisture on Glass Transition Temperature and Applications
Moisture Absorption in Room-Temperature Water
Glass Transition Temperature after Immersion
Evolution of Glass Transition Temperature upon Thermal Cycling
Interaction of Water and Polyurethane SMP
Correlation of Moisture, Glass Transition Temperature, and Hydrogen Bonding
New Features Based on Effects of Moisture
Recovery Tests

Electrically Conductive Polyurethane Shape Memory Polymers
Preparation of Electrically Conductive Polyurethane SMP
Shape Recovery by Passing Electrical Current
Distribution of Carbon Powder in Polyurethane SMP
Electrical Resistivity
Thermal Stability
Uniaxial Tensile Testing at Room Temperature
Shape Memory Properties upon Heating

Effects of Moisture on Electrically Conductive Polyurethane Shape Memory Polymers
Absorption of Moisture in Room-Temperature Water
Electrical Resistivity after Immersion
Glass Transition Temperature after Immersion
Evolution of Glass Transition Temperature upon Thermal Cycling
Correlation of Moisture Absorption, Loading of Carbon Powder, and Glass Transition Temperature
Effects of Moisture on Thermomechanical Properties

Magnetic and Conductive Polyurethane Shape Memory Polymers
Iron Oxide Micro Particles
Nickel Micro and Nano Powders
Electrically Conductive SMPs

Shape Memory Polymer Nanocomposites
Synthesis Techniques of SMP Nanocomposites
Shape Memory Polymer Nanocomposites

Porous Polyurethane Shape Memory Polymers
Water as Foaming Agent for Porous SMPs
Formation of Bubbles by Heat Treatment
Thermomechanical Behaviors of SMP Foams
Yield Surface of Foam
Influence of Storage on Polyurethane SMP Foams

Shape Memory Effects at Micro and Nanoscales
SMP Thin Wires
SMP Micro Beads
SMP Thin and Ultrathin Films
Surface Patterning atop Shape Memory Polymers

Wrinkling atop Shape Memory Polymers
Theory of Wrinkling
Wrinkling atop SMPs

Medical Applications of Polyurethane Shape Memory Polymers
Thermo-Responsive Feature-Based Devices
Thermo- and Moisture-Responsive Feature-Based Devices
Toward Micro Machines

Mechanisms of Multi-Shape and Temperature Memory Effects
Multi-Shape Memory Effect and Temperature Memory Effect
Demonstration of Multi-SME and TME in Polyurethane SMP
Mechanisms

Future of Polyurethane Shape Memory Polymers
Characterization and Modeling of SMPs
Stability of SME
Cyclic Actuation
Alternative Actuation Techniques
Multiple Functions

Über Autor(innen)

W.M. Huang is an Associate Professor of Mechanical and Aerospace Engineering at Nanyang Technological University, Singapore.