About the Editors; 1 Theoretical Aspects Regarding Polymer Photochemistry; Abstract; 1 Introduction; 2 Theoretical Aspects Regarding Polymer Photochemistry; 2.1 General Photodegradation Mechanisms of Polymers; 2.1.1 Photo-Oxidative Mechanism; 2.1.2 Initiation; 2.1.3 Propagation; 2.1.4 Other Aspects Concerning Hydroperoxides Photodecomposition; 2.1.5 The Energy Transfer Between Carbonyl Groups and Hydroperoxide Structures; 2.1.6 The Photo-Fries Rearrangement; 2.1.7 Termination; 3 Conclusions; References

2 Factors Influencing the Photochemical Behavior of Multicomponent Polymeric MaterialsAbstract; 1 Introduction; 2 Influence of Chemical Structure; 3 Presence of Impurities; 4 Influence of Wavelength and Irradiation Dose; 5 Influence of Temperature; 6 Influence of Humidity; 7 Conclusions; References; 3 Multicomponent Polymer Materials: Photodegradation Mechanism; Abstract; 1 Introduction; 2 Photodegradation Mechanisms of Multifunctional Polymeric Materials; 3 Conclusions; References; 4 Photochemical Behavior of Wood Based Materials; Abstract; 1 Introduction

2 Photochemical Behaviour of Wood Based Materials3 Conclusions; References; 5 Photochemical Behavior of Synthetic Polymeric Multicomponent Materials Composites and Nanocomposites; Abstract; 1 Introduction; 2 Photochemical Behavior of Thermoplastic Matrix Based Composites; 2.1 General Considerations; 2.2 Photochemical Behavior of Thermoplastic Matrices; 2.3 Thermoplastic Composites with Natural Fillers from Renewable Resources; 2.3.1 Wood Particles (Chips and Flour); 2.3.2 Wood Fibers and Other Ligno-cellulosic Fibers; 2.3.3 Natural Protein Fibers (Silk, Wool)

2.4 Thermoplastic Composites with Inorganic and Synthetic Fillers2.4.1 Inorganic Particulate Fillers; 2.4.2 Synthetic Fibers Reinforced Thermoplastics; 3 Thermoplastic Nanocomposites; 3.1 Polyolefins-Based Nanocomposites; 3.2 Other Thermoplastics Used in Nanocomposites; 3.3 Nanocomposite UV-Protective Coatings; 4 Photochemical Behavior of Thermosetting Matrix Based Composites; 4.1 UV-Cured Thermosetting Matrix Based Composites; 4.1.1 Fiber-Reinforced Epoxy Resins; 4.1.2 Glass Fiber-Reinforced Polyester Resins; 4.1.3 Dual Cure Processing

4.2 UV-Initiated Degradation of Thermosetting Polymers Based Composites4.2.1 Particle-Filled Epoxy Resins; 4.2.2 Glass/Graphite Fibers Reinforced Epoxy Resins; 4.2.3 Other Thermosetting Resins-Based Composites; 5 Photochemical Behavior of Thermosetting Matrix Based Nanocomposites; 5.1 Clay-Thermosetting Polymer Nanocomposites; 5.2 Thermosetting Polymer-Silica Nanocomposites; 5.3 CNTs-Epoxy Resins Nanocomposites; 5.4 Graphene Platelets-Thermosetting Polymer Nanocomposites; 5.5 Organic-Inorganic Hybrid Materials Obtained by the Dual Cure Process; 5.5.1 Epoxy-Based Hybrid Materials