Preface xiii About the Authors xv 1 Synthesis of Bio-Based Epoxy Resins 1Piotr Czub and Anna Sienkiewicz 1.1 Introduction 1 1.2 Plant Oil Bio-Based Epoxy Resins 2 1.3 Substitutes for Bisphenol A Replacement 13 1.3.1 Lignin-Based Phenols 13 1.3.2 Vanilin 23 1.3.3 Cardanol 36 1.3.4 Isosorbide 46 1.3.5 Terpene Derivatives 51 1.4 Bio-Based Epoxy Curing Agents 56 References 66 2 Natural/Synthetic Fiber-Reinforced Bioepoxy Composites 73BoWang, Silu Huang, and Libo Yan 2.1 Introduction 73 2.2 Synthetic and Natural Fibers 73 2.2.1 Synthetic Fibers 74 2.2.1.1 Organic Synthetic Fibers 74 2.2.1.2 Inorganic Synthetic Fibers 77 2.2.2 Natural Fibers 82 2.2.2.1 Plant-Based Natural Fibers 82 2.2.2.2 Animal-Based Natural Fibers 86 2.2.2.3 Mineral-Based Natural Fibers 87 2.2.3 Hybrid Fiber Product 88 2.3 Bioepoxy 89 2.3.1 Natural Oil-Based Epoxy 89 2.3.2 Isosorbide-Based Epoxy (IS-EPO) 90 2.3.3 Furan-Based Epoxy 92 2.3.4 Polyphenolic Epoxy (Vegetable Tannins) 94 2.3.5 Epoxidized Natural Rubber (ENR) 94 2.3.6 Lignin-Based Epoxy 96 2.3.7 Rosin-Based Epoxy 97 2.4 Fiber-Reinforced Bioepoxy Composites 98 2.4.1 Synthetic Fiber-Reinforced Bioepoxy Composites 98 2.4.2 Natural Fiber-Reinforced Bioepoxy Composites 101 2.4.3 Natural–Synthetic Hybrid Fiber-Reinforced Bioepoxy Composites 103 2.5 Future Perspectives 104 2.6 Conclusions 105 Acknowledgments 105 References 106 3 Polymer Blends Based on Bioepoxy Polymers 117Sudheer Kumar and Sukhila Krishnan 3.1 Introduction 117 3.2 Plant Oils 118 3.2.1 Chemical and Physical Properties of Plant Oils 118 3.2.2 Chemical Modification of Plant Oils 120 3.3 Preparation of Bioepoxy Polymer Blends with Epoxy Resins 121 3.3.1 Castor Oil-Based Bioepoxy Polymer Blend 123 3.3.2 Soybean Oil-Based BioepoxyThermoset Polymer Blend 126 3.3.3 Linseed Oil-Based BioepoxyThermoset Polymer Blend 129 3.3.4 Palm Oil-Based Bioepoxy Thermoset Polymer Blend 131 3.4 Application of Bioepoxy Polymer Blends 133 3.4.1 Paints and Coatings 133 3.4.2 Adhesives 133 3.4.3 Aerospace Industry 134 3.4.4 Electric Industry 134 3.5 Conclusion 134 References 135 4 Cure Kinetics of Bio-epoxy Polymers, Their Blends, and Composites 143P.A. Parvathy, SmithaMohanty, and Sushanta K. Sahoo 4.1 Introduction 143 4.2 Fundamentals of Curing Reaction Kinetics 144 4.2.1 Curing Kinetic Theories: Isothermal and Non-isothermal 144 4.3 Curing of Bio-thermosets 147 4.3.1 Curing Agents and Curing Reactions 147 4.4 Curing Kinetics of Bio-epoxies and Blends 149 4.4.1 Curing Kinetics of Bio-epoxy Composites 155 4.5 Case Study: Non-isothermal Kinetics of Plant Oil–Epoxy–Clay Composite 156 4.6 Conclusion and Future Prospective 161 References 161 5 Rheology of Bioepoxy Polymers, Their Blends, and Composites 167Appukuttan Saritha, Battula D.S. Deeraj, Jitha S. Jayan, and Kuruvilla Joseph 5.1 Introduction 167 5.2 Rheology of Bioepoxy-Based Polymers 168 5.2.1 Natural Oil-Based Epoxies 169 5.2.2 Isosorbide-Based Epoxy Resins 172 5.2.3 Phenolic and Polyphenolic Epoxies 175 5.2.4 Epoxidized Natural Rubber-Based Epoxies 176 5.2.5 Epoxy Lignin Derivatives 178 5.2.6 Rosin-Based Resin 181 5.3 Rheology of Bioepoxy-Based Composites 181 5.4 Rheology of Bioepoxy-Based Blends 187 5.5 Conclusions and Future Scope 190 References 190 6 Dynamical Mechanical Thermal Analysis of Bioepoxy Polymers, Their Blends, and Composites 197Angel Romo-Uribe 6.1 Focus 197 6.2 Bioepoxies and Reinforcers 198 6.3 Dynamic Mechanical Analysis and Polymer Dynamics 198 6.4 Applications 207 6.5 Conclusion 210 References 211 7 Mechanical Properties of Bioepoxy Polymers, Their Blends, and Composites 215Ahmad Y. Al-Maharma, Yousef Heider, BerndMarkert, and Marcus Stoffel 7.1 Introduction 215 7.2 Mechanical Properties of Bioepoxy Polymers 216 7.2.1 Effect of Modifying Bioepoxy Chemical Structure 218 7.2.2 Effect of Curing Agents 218 7.3 Blends of Bioepoxy Resin 220 7.3.1 Toughening Effect of EVO-Based Resins 220 7.3.2 Effect of Chemical Interaction in Epoxy Blend 223 7.3.3 Increasing Content Effect of EVOs in Bioepoxy Blend 223 7.4 Bioepoxy-Based Composites 226 7.4.1 Undesirable Effect of Moisture Absorption 226 7.4.2 Fiber-Reinforced Bioepoxy Composite 227 7.4.2.1 Natural Fiber-Reinforced Bioepoxy Composites 227 7.4.2.2 Synthetic Fiber-Reinforced Bioepoxy Composites 229 7.4.2.3 Hybrid Fiber-Reinforced Bioepoxy Composites 230 7.4.3 Bioepoxy-Based Nanocomposites 230 7.4.3.1 Nanoclay-Reinforced Bioepoxy Composites 231 7.4.3.2 Cellulose Nanofiller-Reinforced Bioepoxy Composites 233 7.4.4 Multiscale Bioepoxy Composites 235 7.5 Conclusion 235 7.6 Future Perspectives and Recommendations 237 Acknowledgment 237 References 237 8 Bio-epoxy Polymer, Blends and Composites Derived Utilitarian Electrical, Magnetic and Optical Properties 249RaviPrakashMagisetty and Naga Srilatha CH 8.1 Introduction 249 8.2 Significance of Bioepoxy-Based Materials 250 8.3 Bioepoxy-Derived Utilitarian Electrical, Magnetic, and Optical Properties 252 8.3.1 Bioepoxy-Based Material: Electrical and Electronic Properties 252 8.3.2 Bioepoxy-Based Material: Magnetic and Optoelectronic Properties 257 8.4 Conclusion 262 References 263 9 Spectroscopy and OtherMiscellaneous Techniques for the Characterization of Bio-epoxy Polymers, Their Blends, and Composites 267Mohammad Khajouei, Peyman Pouresmaeel-Selakjani, and Mohammad Latifi 9.1 Introduction 267 9.2 Various Methods for Epoxy Polymer Characterization 268 9.2.1 FTIR Spectroscopy 268 9.2.1.1 How Phase Separation Process Can Affect the IR Spectrum 270 9.2.2 Nuclear Magnetic Resonance (NMR) Spectroscopy 270 9.2.3 Differential Scanning Calorimetry (DSC) 274 9.2.4 Thermogravimetric Analysis (TGA) 275 9.3 Various Bio-Based Epoxy Polymers,Theirs Uses, and Methods of Characterization in Review 275 9.3.1 Fire-Retardant-Based Epoxy 276 9.3.2 (Lignocellulosic Biomass)-Based Epoxy Polymers 277 9.3.3 Furan-Based Epoxy Resin 278 9.3.4 Rosin Corrosive-Based Epoxy 278 9.3.5 Itaconic Corrosive-Based Epoxy 278 9.3.6 Self-mending Epoxy Resin 279 9.3.7 Other Epoxy Polymers 279 References 280 10 Flame Retardancy of Bioepoxy Polymers, Their Blends, and Composites 283Young-O Kim and Yong Chae Jung 10.1 Introduction 283 10.2 Methods for Analyzing Flame-Retardant Properties 284 10.2.1 LOI (Limiting Oxygen Index) 286 10.2.2 UL-94 287 10.2.2.1 Horizontal Testing (UL-94 HB) 287 10.2.2.2 Vertical Testing (UL-94 V) 288 10.2.3 Cone Calorimeter 288 10.2.3.1 Configuration 288 10.2.3.2 Controlling Factors: Heat Flux,Thickness, and Distance Between Sample Surface and Cone Heater 289 10.2.4 Microscale Combustion Calorimeter 292 10.3 Halogen-Free Flame-RetardantMarket 293 10.4 Bioepoxy Polymers with Flame-Retardant Properties 293 10.4.1 Lignocellulosic Biomass-Derived Epoxy Polymers 294 10.4.1.1 Eugenol 294 10.4.1.2 Vanillin 296 10.4.2 Furan 297 10.4.3 Tannins 298 10.5 Use of Fillers for Improving Flame-Retardant Properties of Bioepoxy Polymers 298 10.6 Conclusion 302 Acknowledgment 303 References 303 11 Water Sorption and Solvent Sorption of Bio-epoxy Polymers, Their Blends, and Composites 309Amirthalingam V. Kiruthika 11.1 Introduction 309 11.2 Bio-epoxy Resins 310 11.2.1 Soybean Oil (SO)-Based Epoxy Resins 310 11.2.2 Cardanol-Based Epoxy 312 11.2.3 Lignin-Based Epoxy 313 11.2.4 Gallic Acid (C7H6O5)-Based Epoxy 314 11.2.5 Itaconic Acid (C5H6O4)-Based Epoxy 314 11.2.6 Natural Rubber (NR)-Based Epoxy 315 11.2.7 Rosin-Based Epoxy 317 11.2.8 Furan-Based Epoxy 317 11.2.9 Hempseed Oil-Based Epoxy 318 11.2.10 Eugenol (C10H12O2)-Based Epoxy 319 11.3 Conclusion 319 References 320 12 Biobased Epoxy: Applications in Mendable and Reprocessable Thermosets, Pressure-Sensitive Adhesives and Thermosetting Foams 323Roxana A. Ruseckaite, Pablo M. Stefani, and Facundo I. Altuna 12.1 Introduction 323 12.2 Mendable and Reprocessable Biobased Epoxy Polymers 324 12.2.1 Extrinsic Self-healing Biobased Epoxies 326 12.2.2 Intrinsic Self-healing Biobased Epoxies 328 12.3 Pressure-Sensitive Adhesives (PSAs) From Biobased Epoxy Building Blocks 333 12.4 Biobased Epoxy Foams 342 12.4.1 Syntactic Foams from Biobased Epoxy Resins 342 12.4.2 Thermosetting Epoxy Foams 345 References 353 Index 361
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