Ice templating and freeze-drying for porous materials and their applications
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書誌事項
Ice templating and freeze-drying for porous materials and their applications
Wiley-VCH, 2018
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内容説明・目次
内容説明
Filling a gap in the literature, this is the first book to focus on the fabrication of functional porous materials by using ice templating and freeze drying.
Comprehensive in its scope, the volume covers such techniques as the fabrication of porous polymers, porous ceramics, biomimic strong composites, carbon nanostructured materials, nanomedicine, porous nanostructures by freeze drying of colloidal or nanoparticle suspensions, and porous materials by combining ice templating and other techniques. In addition, applications for each type of material are also discussed.
Of great benefit to those working in the freeze-drying field and researchers in porous materials, materials chemistry, engineering, and the use of such materials for various applications, both in academia and industry.
目次
Preface xi
1 Introduction to Freeze-drying and Ice Templating 1
1.1 Introduction 1
1.2 The Freeze-drying Process 3
1.2.1 Additives in the Solution 4
1.2.1.1 Additives to Maintain Integrity/Activity of Biological Samples 4
1.2.1.2 Lyoprotectants to Prevent Denaturation of Biopharmaceutics or Enhance Reconstitution of Pharmaceutics 5
1.2.1.3 Stabilizer/Binders for Particulate Suspensions 5
1.2.2 Optimizing the Freezing Stage 5
1.2.3 Primary Drying in Freeze-drying 7
1.2.4 Secondary Drying in Freeze-drying 9
1.3 Ice Templating for Porous Structures 10
1.3.1 Solutes or Particles 10
1.3.2 Solvents 11
1.3.3 Controlled Freezing 12
1.3.3.1 Control Orientation of Ice Crystal Growth 12
1.3.3.2 Ways of Freezing Samples 13
1.3.4 Removal of Ice Crystal Templates 14
1.3.5 Ice-templated Materials 15
1.3.5.1 Shape and Form 15
1.3.5.2 Pore Structure and Morphology 16
1.3.5.3 Type of Materials 18
1.4 The Practice in Our Laboratory 18
1.4.1 Controlled Freezing 18
1.4.2 Observation of Freezing and Freeze-drying 20
1.4.3 Freeze-drying Procedure 22
References 24
2 Fundamentals of Controlled Freezing for Ice-templated Porous Materials 29
2.1 Introduction 29
2.2 The Basics of Ice Crystals 30
2.3 Instruments and Techniques for Investigation of Freezing Aqueous Particulate Systems 32
2.3.1 Optical Microscope Equipped with a Freezing Stage 33
2.3.2 Optical Interferometry 34
2.3.3 Cryogenic Transmission Electron Microscopy (CryoTEM) 35
2.3.4 X-ray Radiography and Tomography 36
2.3.5 Small Angle X-ray Scattering 38
2.4 The Interactions Between a Particle and the Freezing Front 41
2.4.1 Basic Models and Equations for the Critical Freezing Velocity 41
2.4.2 Effects of Thermal Gradient, Particle Radius, and Viscosity on Critical Velocity 42
2.4.3 Geometry and Interfacial-curvature Effects 44
2.5 Morphology Instability at the Freezing Front 45
2.5.1 Mullins-Sekerka Equation 45
2.5.2 Linear Stability Analysis 47
2.5.3 Morphology Zones and Stability Diagram 48
2.6 Effect of Parameters on the Structure and Morphology of Ice-templated Materials 53
2.6.1 Formulation of Solution/Suspensions 53
2.6.1.1 Solutes or Particles 53
2.6.1.2 Particle Size and Shape 53
2.6.1.3 Concentration of Polymers or Particles 54
2.6.1.4 Additive or Binder 54
2.6.1.5 Solvent 55
2.6.1.6 Emulsion 55
2.6.2 Control of the Freezing Conditions 55
2.7 Summary 56
References 57
3 Applications of Freeze-drying in Pharmaceuticals, Biopharmaceuticals, and Foods 63
3.1 Introduction 63
3.2 Excipients in Pharmaceutical Formulations 63
3.3 Improving the Freeze-drying Process 66
3.3.1 The Types of Freeze-drying Processes 67
3.3.1.1 Spray Freeze-drying Process 67
3.3.1.2 Spin Freezing 68
3.3.1.3 Atmospheric Freeze-drying 68
3.3.2 Process Development and Design 68
3.4 Applications of Freeze-drying in Pharmaceutics 71
3.4.1 Spray Freeze-drying 72
3.4.2 Orally Disintegrating Tablets (ODTs) 73
3.4.3 Floating Drug Delivery System 73
3.4.4 Emulsion Freeze-drying 74
3.5 Applications of Freeze-drying in Biopharmaceutics 75
3.5.1 The Freeze-drying Process for Biopharmaceutics 76
3.5.1.1 During Freezing 76
3.5.1.2 During Freeze-drying 77
3.5.1.3 During Solid State Storage 78
3.5.2 Biopharmaceutical Formulations 81
3.5.2.1 Peptide Formulations 82
3.5.2.2 Protein Formulations 83
3.5.2.3 Vaccine Formulations 85
3.5.2.4 Nucleic Acid-based Formulations 87
3.6 Freeze-drying in Food Applications 89
3.6.1 Simple Freeze-drying 89
3.6.2 Encapsulation 90
3.6.3 Probiotic Foods 90
3.7 Summary 92
References 92
4 Porous Polymers by Ice Templating 103
4.1 Introduction 103
4.2 Porous Polymers by Freeze-drying of Solutions and Suspensions 104
4.2.1 Polymer Sponges 104
4.2.2 Aligned Porous Polymers by Directional Freezing 106
4.2.2.1 Water-based Systems 107
4.2.2.2 Organic Solvent-based Systems 108
4.2.2.3 Compressed CO2 Solution 110
4.2.3 Nanofibrous Polymers 111
4.2.4 Combining Ice Templating and Other Templating Methods 112
4.3 Hydrogels and Crosslinked Porous Polymers 114
4.3.1 Hydrogels By a Freeze-thaw Process 114
4.3.2 Macroporous Cryogels 116
4.3.3 Aligned Porous Materials By Frozen Polymerization 118
4.3.4 Post-freeze-drying Crosslinking 120
4.4 Applications 121
4.4.1 Biocompatibility and Tissue Engineering 121
4.4.2 Controlled Drug Release 124
4.4.3 Encapsulation 125
4.4.4 Water Treatment 127
4.4.5 Liquid Chromatography and Separation 129
4.4.6 Other Applications 130
4.5 Summary 130
References 131
5 Porous Ceramics and Metals by Ice Templating 141
5.1 Introduction 141
5.2 Porous Ceramics by Ice Templating 142
5.2.1 Effect of Formulations 142
5.2.1.1 Ceramic Particles 142
5.2.1.2 Solvent 145
5.2.1.3 Dispersant or Stabilizer 146
5.2.1.4 Binder 147
5.2.1.5 Additives 147
5.2.2 Freezing Conditions 150
5.2.2.1 Modes of Processing and Freezing 150
5.2.2.2 Freezing Velocities 157
5.3 Porous Ceramics by Gelation-Freeze-Casting 158
5.3.1 Gelation with Gelatin 158
5.3.2 Photopolymerization (or Photocuring) of Frozen Slurry 158
5.3.3 Polymerization (or Gelation) of Slurry 159
5.4 Porous Ceramics via Cryo-Sol-Gelation 159
5.5 Porous Metals via Ice templating 162
5.6 Applications of Ice-templated Ceramics 163
5.6.1 Filtration/Gas Permeation 163
5.6.2 Thermal Insulator 163
5.6.3 Bioceramics 165
5.6.4 Electric/electrode Materials 166
5.6.5 Catalysis 167
5.7 Summary 168
References 169
6 Strong and Tough Ceramic Composites via Ice Templating 177
6.1 Introduction 177
6.1.1 Enhanced Applications by Ceramic Composites 177
6.1.2 Processing and Mechanical Behaviour of Ceramic Composites 179
6.2 Mechanical Characterizations of Ceramic Composites 182
6.2.1 Strength 182
6.2.2 Hardness 185
6.2.3 Fracture Mechanics and Fracture Toughness 186
6.2.4 Toughening Mechanism in Ceramics and Ceramic Composites 187
6.3 Porous Ceramic/Polymer Composites 189
6.3.1 Hydroxyapatite (HA)-based Composites 191
6.3.2 Clay-based Composites 193
6.4 Porous Ceramic-Ceramic Composites 196
6.5 Nacre-like Layered Ceramic-Polymer Composites 198
6.5.1 Nacre and Nacre-mimic Composites 198
6.5.2 Layered Polymer-Ceramic Composites by Infiltrating Ice-templated Porous Ceramics 200
6.5.3 Magnetic Field-assisted Freeze-casting for Strong Composites 207
6.6 Nacre-like Ceramic/Metal Composites 209
6.7 Enamel-mimic Ceramic-Polymer Composites 211
6.8 Ceramic-Ceramic Composites with the Second Nanoscale Ceramic Phase 214
6.9 Tough and Functional Composites 216
6.10 Summary 218
References 219
7 Porous Carbon and Carbon-based Materials via Ice Templating and Freeze-drying 229
7.1 Introduction 229
7.2 Carbon Cryogels and Ice-templated Carbons 230
7.2.1 Carbon Cryogels 230
7.2.2 Ice-templated Carbons 237
7.3 Carbon Nanofibres 241
7.4 Carbon Nanotubes (CNTs) and CNT-based Materials 245
7.4.1 Introduction to CNTs 245
7.4.2 CNT Aerogels/Cryogels 246
7.4.3 CNT-based Porous Materials 247
7.5 Porous Graphene Networks and Graphene-based Materials 250
7.5.1 Graphene and 3D Graphene Networks 250
7.5.2 Porous Graphene by Ice Templating/Freeze-drying 251
7.5.3 Graphene-based or Graphene-containing Materials by Ice Templating 258
7.6 Porous Graphene/CNT Hybrid Structures 261
7.7 Summary 264
References 265
8 Nanomedicine via Freeze-drying and Ice Templating 277
8.1 Introduction 277
8.2 Poorly Water-soluble Drugs and Drug Classifications 277
8.3 Nanoformulation Approaches for Poorly Soluble Drugs 280
8.4 Bioavailability and Delivery of Drug Nanoparticles 284
8.4.1 The Absorption Process 284
8.4.1.1 The Orally Administering Route 285
8.4.1.2 Absorption in Lung by Pulmonary Delivery 288
8.4.2 Nanoparticle Clearance and Distribution 289
8.4.3 Metabolism and Excretion 291
8.4.4 Nanoparticle Toxicology 293
8.5 Freeze-drying of Solutions/Suspensions for Nanomedicine 294
8.6 Emulsion-Freeze-drying for Drug Nanoparticles 295
8.7 Solvent Evaporation Within Porous-Soluble Polymers 301
8.8 Summary 303
References 304
9 Nanostructured Materials Fabricated via Ice Templating of Colloidal/Nanoparticle Suspensions 313
9.1 Introduction 313
9.2 Cellulose Nanofibres (CNFs) and Cellulose Nanocrystals (CNCs) 314
9.3 Nanoparticles and Colloids 318
9.4 Nanowires and Nanofibres 323
9.5 Platelets and Nanosheets 323
9.6 Mixing Colloids and Core-Shell Nanoparticles 325
9.7 Summary 327
References 328
10 Other Developments and Perspectives in the Fabrication of New Materials Facilitated by Freezing and Freeze-drying 333
10.1 Combining Ice-templating and Other Techniques 333
10.1.1 Ice Templating and Emulsion Templating 333
10.1.2 Gelation/Crosslinking and Ice Templating 335
10.1.3 Ice Templating with Green Solvents 336
10.2 Freezing-induced Self-assembly 337
10.3 Reaction and Polymerization in Frozen Solutions 337
10.4 Ice-templated Hierarchically Porous Materials Containing
Micropores 341
10.5 General Summary and Perspectives 344
References 345
Index 349
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