Encapsulation Nanotechnologies

Overview

This unique and comprehensive book covers all the recent physical, chemical, and mechanical advancements in encapsulation nanotechnologies.

Encapsulation is prevalent in the evolutionary processes of nature, where nature protects the materials from the environment by engulfing them in a suitable shell. These natural processes are well known and have been adopted and applied in the pharmaceutical, food, agricultural, and cosmetics industries.

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Overview

This unique and comprehensive book covers all the recent physical, chemical, and mechanical advancements in encapsulation nanotechnologies.

Encapsulation is prevalent in the evolutionary processes of nature, where nature protects the materials from the environment by engulfing them in a suitable shell. These natural processes are well known and have been adopted and applied in the pharmaceutical, food, agricultural, and cosmetics industries.

In recent years, because of the increased understanding of the material properties and behaviors at nanoscale, research in the encapsulation field has also moved to the generation of nanocapsules, nanocontainers, and other nano devices. One such example is the generation of self-healing nanocontainers holding corrosion inhibitors that can be used in anti-corrosion coatings. The processes used to generate such capsules have also undergone significant developments. Various technologies based on chemical, physical, and physico-chemical synthesis methods have been developed and applied successfully to generate encapsulated materials.

Because of the increasing potential and value of the new nanotechnologies and products being used in a large number of commercial processes, the need for compiling one comprehensive volume comprising the recent technological advancements is also correspondingly timely and significant. This volume not only introduces the subject of encapsulation and nanotechnologies to scientists new to the field, but also serves as a reference for experts already working in this area.

Encapsulation Nanotechnologies details in part:

  • The copper encapsulation of carbon nanotubes
  • Various aspects of the application of fluid-bed technology for the coating and encapsulation processes
  • The use of the electrospinning technique for encapsulation
  • The concept of microencapsulation by interfacial polymerization
  • Overviews of encapsulation technologies for organic thin-film transistors (OTFTs), polymer capsule technology, the use of supercritical fluids (such as carbon dioxide), iCVD process for large-scale applications in hybrid gas barriers

Readership
Encapsulation Nanotechnologiesis of prime interest to a wide range of materials scientists and engineers, both in industry and academia.

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Product Details

  • ISBN-13: 9781118344552
  • Publisher: Wiley
  • Publication date: 5/13/2013
  • Edition number: 1
  • Pages: 464
  • Product dimensions: 6.10 (w) x 9.30 (h) x 1.10 (d)

Meet the Author

Vikas Mittal is currently an assistant professor in theChemical Engineering Department of The Petroleum Institute at AbuDhabi. He obtained his PhD in 2006 from the Swiss Federal Instituteof Technology in Zurich, Switzerland. He also worked as a polymerengineer at BASF Polymer Research in Ludwigshafen, Germany. Hisresearch interests include polymer nanocomposites,compatibilization of organic and inorganic materials, polymercolloids, thermal stability studies, and anti-corrosion coatings.He has published more than fifty journal publications and authoredas well as edited several books on these subjects.

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Table of Contents

Preface xiii

List of Contributors xvii

1 Copper Encapsulation of Multi-Walled Carbon Nanotubes1

1.1 Introduction 2

1.2 Preparation of Copper Encapsulated CNTs 3

References 37

2 Novel Nanocomposites: Intercalation of Ionically ConductivePolymers into Molybdic Acid 41

2.1 Introduction 41

2.2 Experimental 47

2.3 Intercalation into Molybdic Acid 48

2.4 Preparation of Polymer-Lithium Complexes 49

2.5 Instrumentation 50

2.6 Results and Discussion 51

2.7 Conclusions 68

References 68

3 Fluid-Bed Technology for Encapsulation and Coating Purposes71

3.1 Introduction 71

3.2 Principles of Fluidization 74

3.3 Classification of Powders 78

3.4 Fluidized Bed Coaters 80

3.5 Fluid-Bed Coating and Encapsulation Processes 88

3.6 The Design, Optimization and Scale-Up of the Coating Processand the Apparatus 94

3.7 Numerical Modeling of Fluid-Bed Coating 97

References 101

4 Use of Electrospinning for Encapsulation 107

4.1 Introduction 107

4.2 Electrospun Structures for the Encapsulation of BioactiveSubstances in the Food Area 112

4.3 Electrospun Encapsulation Structures for BiomedicalApplications 117

4.4 Other Uses of Electrospinning for Encapsulation 124

4.5 Outlook and Conclusions 129

References 130

5 Microencapsulation by Interfacial Polymerization137

5.1 Introduction 137

5.2 Generalities 141

5.3 Encapsulation by Heterophase Polymerization 144

5.4 Microencapsulation by Polyaddition & PolycondensationInterfacial 148

5.5 Microencapsulation by In Situ Polymerization 158

5.6 Conclusion 166

References 167

6 Encapsulation of Silica Particles by a Thin Shell ofPoly(Methyl) Methacrylate 175

6.1 Introduction 176

6.2 Synthesis of Silica (Nano)Particles and Their SurfaceModification 178

6.3 Encapsulation of Silica Particles in a Thin PMMA Shell181

6.4 Summary 198

References 199

7 Organic Thin-Film Transistors with Solution-ProcessedEncapsulation 203

7.1 Introduction 203

7.2 Environment-Induced Degradations of OTFTs 205

7.3 Encapsulation of OTFTs 209

7.4 Summary and Outlook 221

References 221

8 Tunable Encapsulation Property of Amphiphilic Polymer Basedon Hyperbranched Polyethylenimine 225

8.1 Introduction 226

8.2 Synthesis of PEI-CAMs 228

8.3 Unimolecularity versus Aggregate of PEI-CAMs 230

8.4 Host–Guest Chemistry of PEI-CAMs 231

8.5 Charge Selective Encapsulation and Separation 233

8.6 Recognition and Separation of Anionic–Anionic Mixturesby Core Engineering of a CAM 239

8.7 Modulation of the Guest Release of a CAM 247

8.8 Concluding Remarks 250

Acknowledgements 251

References 251

9 Polymer Layers by Initiated CVD for Thin Film Gas BarrierEncapsulation 255

9.1 Introduction 256

9.2 Initiated CVD Polymerization 258

9.3 Coating by Initiated CVD 268

9.4 Advantages of iCVD in Hybrid Multilayer Gas Barriers 272

9.5 Specific Requirements for the Use in HybridMultilayers 276

9.6 Multilayer Gas Barriers Containing Polymers by iCVD 281

9.7 Upscaling and Utilization 285

References 287

10 Polymeric Hollow Particles for Encapsulation of ChemicalMolecules 291

10.1 Introduction 292

10.2 Colloidosome Approach 295

10.3 Internal Phase Separation/Precipitation Approach 299

10.4 Self-Assembly of Amphiphilic Copolymers (CopolymerVesicles) 305

10.4.1 From Amphiphilic Copolymers 306

10.5 Layer-by-Layer (L-b-L) Deposition 310

10.6 Unimolecular Micelles Approach 315

10.7 Heterophase Polymerization 319

10.8 Key Design Features for Applications of Hollow PolymerParticles 332

10.9 Conclusions 340

References 341

11 Protic Ionic Liquids Confinement in Macro, Meso andMicroporous Materials for Proton Conduction 347

11.1 Introduction 348

11.2 Structure and Properties of Materials for Proton Conduction351

11.3 Encapsulation Procedures and Proton Conduction Performance365

11.4 New Activities and Development Trends 383

References 386

12 Encapsulation Methods with Supercritical Carbon Dioxide:Basis and Applications 391

12.1 Introduction 391

12.2 Supercritical Fluids – Properties 392

12.3 Particle Engineering and Encapsulation with SupercriticalFluids 394

References 419

Index 425

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