The Complete Technology Book on Wood and Its Derivatives
Author: NIIR Board of Consultants & Engineers |
Some of the fundamentals of the book are wood structure and chemical composition, chemical change in wood associated with wood fiberboard manufacture, chemical changes in wood effected by furnish preparation processes, bark extracts as bonding agent for particle board , wood polymer composites and their industrial applications , chemical reactions of preservatives with wood, activation of wood surface and nonconventional bonding , chemistry of weathering and protection , weathering of chemically modified woods, energy and chemicals from wood, charcoal and other chemicals, etc.
The developments in wood industry in the country are mainly attributed to the pioneering work carried in the field of wooden products. There are lots of chemicals and other products extracted from wood. This book contains processes of various wooden products and its derivatives. This is the first book of its kind which is invaluable resource to research scholars, entrepreneurs, technocrats, institutes, libraries and existing one.
Contents
Gross Anatomical Features
Softwood Anatomy
Hardwood Anatomy
Cell Wall Structure
Chemical Composition of Cell Wall
2. Chemical Change in Wood Associated with Wood Fiberboard Manufacture
Furnish Preparation Processes
Wet Form Process Using Pressurized Refining.
Chemical Changes in Wood Effected by Furnish Preparation Processes
Board Conversion Processes
Wet Strength Properties of Hot Pressed Boards
Mechanism of Wet Strength Properties
Chemical Changes in Wood Effected by Board Conversion
3. Review of Particleboard Manufacture and Processing
Definition
Materials
Manufacturing
Particle Drying
Blending
Mat Formation
Finishing
Conclusion
4. Bark Extracts as Bonding Agent for Particle board
Material and Preparation
Bark Extracts
Three Layer Particleboard
Testing
5. Composition Boards Containing Bark
Amounts of Bark Available
Review of Efforts to Use Bark in Composition Boards
6. Polyurethane Foams from the Reaction of Bark and Diisocyanate
7. Wood Polymer Composites and their Industrial Applications
Chemistry of the Process
Impregnation Process
Monomers For Wood Polymer Composites
Physical Properties
Commercial Applications
Radiation Process.
World Wide Production
8. Interaction of Preservatives with Wood
Major Use Wood Preservatives
Minor Use Wood Preservatives
Copper Naphthenate.
Copper 8 Quinolinolate (Copper 8)
Tributyltin Oxide.
New Wood Preservatives
Preservative Distribution in Wood
Macrodistribution
Chemical Reactions of Preservatives with Wood
Inorganic Salt Preservatives.
Organic Preservatives
9. Chemistry of Adhesion
Thermoplastic and Thermosetting Polymers
Molecular Forces Between Adherend and Adhesive
Adhesives for Wood
Phenolic Resin Adhesives
Resoles
Novolak
Resorcinol Resins
Durability and Fracture Toughness
Urea Formaldehyde and Melamine Formaldehyde Resins
Isocyanate Based Adhesives
Thermoplastic Adhesives
Hot Melt Adhesives
Acidity of Wood
10. Activation of Wood Surface and Nonconventional Bonding
Conditions and Methods of Wood Surface Formation.
Direct Covalent Wood to Wood Bonding
Bonding Through Intermediacy of Bifunctional Molecules
Bonding by Intermediacy of a Covalently Attached Polymer
Use of Oxidants
Fundamental Studies
Surface Activation.
Hydrogen Peroxide Activation
Plasma Activation
Other Oxidizing Activators
Nonconventional Bonding
Direct Bonding
Bifunctional Amines
Bifungtional Acids
Bifunctional Isocyanates
Polymers
Conclusions
Addenda
Wood Surface Studies
Nonconventional Bonding with Acid Activation
Nonconventional Bonding with Oxidant Activation
Isocyanates
Nonpolar Nonconventional Binders
Other Methods
Patents
11. Chemistry of Weathering and Protection
Backgrounds
General Aspects of Wood Weathering
Anatomic Structure of Wood and Its Weatherability
Weathering Factors
Other Factors
Penetration of Light and Wood Surface Deterioration
Property Changes During Weathering
Chemical Changes
Colour Changes
Physical Changes
Microscopic Changes
Transverse Section
Radial Section
Tangential Section
Weathering of Wood Based Materials
Plywood
Reconstituted Panel Products
Weathering of Chemically Modified Woods
Free Radical Reactions in Lignin
Free Radical Characteristics and Reactions in Weathered
Participation of Singlet Oxygen in the Weathering Process
Protection Against Weathering
Film Forming Finishes
Varnishes
Natural Wood Finishes
Film Forming
Penetrating
Transparent
Semitransparent
Protection of Wood Based Materials
Wood Coating Interactions
Summary and Future Considerations
12. Biological Decomposition of Solid Wood
Susceptibility and Resistance
Types of Wood Deterioration
Deterioration without Decomposition.
Deterioration with Decomposition
Mecha nobiochemical Decomposition
Biochemical Decomposition: The Wood Decays
Types of Decay
Progressive Changes in Chemical Composition
Progressive Changes in Strength Properties
Cellulose Decomposition
Hemicellulose Decomposition
Lignin Decomposition
Control and Uses of Wood Decomposing Organisms
Uses and Potential Uses
13. The Chemistry of Pyrolysis and Combustion
Formation of Volatile Products from Cellulose
First Patbway
Second Pathway
Dehydration Reactions
Formation and Properties of Char
Char Formation
Char Reactivity
Combustion
Combustibility
14. Chemistry of Fire Retardancy
Early Studies
Protection of Wood with Fire Retardants
Thermogravimetric Analysis (TG).
Differential Thermal Analysis and Differential Scanning Calorimetry
Tunnel Flame Spread Tests
Critical Oxygen Index Test
Test Methods for Related Properties
Smoke Production.
Heat Release Rate
Toxicity
Meehanisms of Fire Retardancy
Chemistry of Burning
Vapor phase Combusttion
Smoldering And Glowing
Theories of Fire Retardancy
Barrier Theories
Thermal Ttheories
Dilution or Noncombustible Gases Theories
Free Radical Trap Theories
Increased Char/Reduced Volatiles Theories
Reduced Heat Content of Volatiles Theories
Phosphorus Nitrogen Synergism Theories
Smoldering Inhibition Theories
Fire Retardant Formulations
Major Chemicals
Aluminum Trihydrate
Miscellaneous Chemicals
Leach resistant Chemicals
Amino resins
Future Research
Leach Resistant Compounds
Improved Fire Retardant Treatments for Panel Products
Effective Coating Systems
Reduced Smoke and Toxicity
Basic Mechanisms. Finally, further work
Summary
Mechanism.
Formulations
Future Research
15. ENERGY AND CHEMICALS FROM WOOD
Alternate Energy Sources
Avaiilable Forest Residues
Energy and Fuels from Wood
Direct Combustion
Sacchari fication Fermentation
Ethanol from wood
Thermal Decomposition
Charcoal and other Chemicals
Thermochemical Liquefaction
Furfural from Wood
Fiberboaard, particleboard, and flskeboard
Plywood
Laminated Lumber
Industrial Use of Energy
Energy Plantations
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