Advances in Shape Memory Polymers

ISBN-13: 9780857098528 / Angielski / Twarda / 2013 / 368 str.

Jinlian Hu

Opis

Shape memory materials are immensely useful because of their capability to recover their original shapes upon exposure to an external stimulus such as heat, moisture, light or a magnetic field. This book reviews key recent research in shape memory polymers, their properties and applications. Topics include the relationship between morphological structures and shape memory properties; high performance Tg and Tm type shape memory polymers; structures of shape memory polymers with supramolecular switches; and the thermally-active and moisture-active shape memory effect of supermolecular shape memory polymers.

Advances in shape memory polymers is an essential reference for polymer and textile material students, scientists, designers, engineers and manufacturers. It is also an invaluable guide for professionals in the biomedical, electronics and engineering industries.

• Reviews key recent research in shape-memory polymers, their properties and applications
• Opening chapters address the relationship between morphological structures and shape memory properties and high performance Tg and Tm type shape memory polymers
• Chapters cover thermally-active and moisture-active shape memory effect of supermolecular shape memory polymers, among other topics

Spis treści

Woodhead Publishing Series in Textiles

Acknowledgements

Preface

Chapter 1: Introduction to shape memory polymers

Abstract:

1.1 Introduction

1.2 Defining shape memory polymers

1.3 Types of shape memory polymers

1.4 A typical shape memory polymer: shape memory polyurethanes (SMPUs)

1.5 Conclusions

Chapter 2: Tm-type shape memory polymers

Abstract:

2.1 Introduction

2.2 Structure and properties of Tm-type shape memory polymers

2.3 Shape memory properties of Tm-type shape memory polymers

2.4 Thermo-mechanical conditions affecting Tm-type shape memory properties

Chapter 3: Tg-type shape memory polymers

Abstract:

3.1 Introduction

3.2 Structure and properties of Tg-type shape memory polymers

3.3 Segmented polyurethanes with similar Tg

3.4 Thermo-mechanical conditions on Tg-type shape memory polymers

3.5 Conclusions

Chapter 4: High performance type shape memory polymers prepared by modified two-step polymerization

Abstract:

4.1 Introduction

4.2 High performance shape memory polymers

4.2.1 Molecular structures

4.2.2 Thermal properties

4.2.3 Shape memory properties

4.2.4 Deformation stress, long-term shape fixing and shape memory properties

4.2.5 Recovery stress and shape memory properties

4.2.6 Stress relaxation

4.3 High performance isophorone diisocyanate (IDPI) Tm-type shape memory polymers

4.3.1 Molecular structures

4.3.2 Thermal properties

4.3.3 Dynamic mechanical properties

4.3.4 Shape memory properties

4.3.5 Shape memory properties after long time fixing

4.3.6 Recovery stress

4.3.7 Resistance to stress relaxation

4.4 High performance Tg-type shape memory polyurethane (SMPU) prepared by modified two-step polymerization

4.4.1 Thermal properties of Tg-type high performance shape memory polyurethane

4.4.2 Dynamic mechanical properties of Tg-type high performance shape memory polyurethane

4.4.3 Phase separation of Tg-type high performance shape memory polyurethane

4.4.4 Shape memory properties of Tg-type high performance shape memory polyurethane: thermo-mechanical cyclic tensile tests

4.4.5 Shape memory properties of Tg-type high performance shape memory polyurethane: shape fixing

4.4.6 Shape memory properties of Tg-type high performance shape memory polyurethane: shape recovery

4.4.7 Shape memory properties of Tg-type high performance shape memory polyurethane: recovery stress

4.5 Conclusions

Chapter 5: Supramolecular shape memory polymers

Abstract:

5.1 Introduction

5.2 Synthesis of polymers containing pyridine moieties

5.3 Supramolecular polymers containing functional pyridine

5.4 Supramolecular liquid crystalline polymers containing pyridine moieties

5.5 Supramolecular polymers and shape memory polymers

5.6 Conclusions

Chapter 6: Supramolecular shape memory polymers containing pyridine

Abstract:

6.1 Introduction

6.2 Synthesis of shape memory polyurethanes (SMPUs) containing pyridine moieties

6.3 The molecular structure of BINA-based SMPUs (BIN-SMPUs)

6.4 Theoretical calculations of BIN-SMPU properties and performance

6.5 Fourier transform infrared (FT-IR) analysis of BIN-SMPUs

6.6 Thermal properties of BIN-SMPUs

6.7 Wide angle X-ray diffraction (WAXD) studies of BIN-SMPUs

6.8 Dynamic mechanical properties of BIN-SMPUs

6.9 Molecular model and morphology of BIN-SMPUs

6.10 Summary

Chapter 7: Thermally-induced properties of supramolecular shape memory polymers containing pyridine

Abstract:

7.1 Introduction

7.2 Comparison of BINA-based shape memory polyurethane (BIN-SMPU) with other SMPUs

7.3 Influence of different factors on shape memory effects (SMEs) of BIN-SMPUs

7.4 Thermally-induced SME mechanism of BIN-SMPUs

7.5 Conclusions

Chapter 8: Moisture-induced properties of supramolecular shape memory polymers containing pyridine

Abstract:

8.1 Introduction

8.2 Moisture absorption of BIN-SMPUs

8.3 Effect of moisture absorption on the thermal properties of polyurethane

8.4 Effect of moisture absorption on the dynamic mechanical properties of polyurethane

8.5 Moisture-induced and water-influenced shape memory effects (SMEs)

8.6 Effect of immersion time on strain recovery

8.7 Mechanism of the moisture-induced shape memory effect in BIN-SMPUs

8.8 Summary

Chapter 9: Shape memory polymers with novel functions: electro-active, magnetically-active, light-adaptive and phase change materials

Abstract:

9.1 Introduction

9.2 Electro-active shape memory polymers

9.3 Magnetically-active shape memory polymers

9.4 Moisture-active shape memory polymers

9.5 Light-adaptive composites from thermally-adaptive shape memory polymers

9.6 Introduction to phase change materials

9.7 Phase change materials for textiles applications

9.8 Solid-liquid phase change materials

9.9 Shape memory polymers with phase change properties

9.10 Fabrication strategies for phase change materials

9.11 Summary

Chapter 10: Shape memory finishing treatments for smart textiles

Abstract:

10.1 Introduction

10.2 Reaction of shape memory polyurethane (SMPU), dimethyloldihydroxylethyleneurea (DMDHEU) and liquid ammonia (LA) as finishing agents with cellulosic materials

10.3 Shape memory finishing treatments for cotton

10.4 Surface morphology of cotton fabrics treated with shape memory polyurethane (SMPU)

10.5 Fabric tensile properties and surface appearance

10.6 Fabric structure

10.7 Effects of shape memory polyurethane (SMPU) on LA/DMDHEU treated cotton

10.8 Internal stresses in cotton fabrics

10.9 The role of shape memory polyurethane as a finishing agent for cotton fabrics

10.10 Summary

Chapter 11: Manufacture of Tg and Tm shape memory polyurethane (SMPU) polymer fibers

Abstract:

11.1 Introduction

11.2 Tm-type shape memory fibers prepared by melt spinning

11.3 Tg-type shape memory fibers prepared by wet spinning

11.4 Summary

Chapter 12: Future developments in shape memory polymers

Abstract:

12.1 Introduction

12.2 Tm-shape memory polyurethane (SMPU) with varying Tm

12.3 Tg-SMPUs with thermally reversible chemical cross-links

12.4 Two-way shape memory fibers

12.5 Gas-sensitive shape memory BINA-HDI copolymers (PUPys)

12.6 Chemically cross-linked PUPys

12.7 Multi-stimuli responsive shape memory fibers

12.8 PUPys polymer blends with other polymers

12.9 Supramolecular liquid crystalline shape memory polymers

12.10 Main-chain pyridine-containing SMPUs

12.11 Applications

Index

O autorze

Jinlian Hu is a Professor at the Institute of Textiles and Clothing, Hong Kong Polytechnic University. A Fellow of the Textile Institute, she was also the recipient of the 2001 Award for Distinguished Achievement from the US Fiber Society. Professor Hu has published over 300 articles and several books on textile materials. She is currently the Editor-in-Chief of the Research Journal of Textiles and Apparel.