Tatsuko Hatakeyama – författare

Environmentally compatible polymers (green polymers) are the key to sustainable developments for our rich and convenient life. In order to develop green polymers, it is essential to understand that nature constructs a variety of materials that can be used. Plant materials such as cellulose, hemicellulose and lignin are the largest organic resources. Thermal Properties of Green Polymers and Biocomposites is unique in that it introduces thermal analysis applicable to green polymers and provides fundamental thermal properties of cellulose, polysaccharides and lignin. The book includes over 370 figures concerning thermal properties of green polymers with detailed experimental conditions. It also introduces newly patented environmentally compatible green polymers. Thermal properties provided include: thermogravimetry (TG), differential thermal analysis (DTA), differential scanning calorimetry (DSC), thermomechanometry (TMA) and dynamic mechanical analysis (DMA).This book covers two domains: This book is aimed at advanced users and specialists who are interested in green polymers and who utilize thermal analyses for the above polymers, especially in research laboratories, both academic and industrial.

Environmentally compatible polymers (green polymers) are the key to sustainable developments for our rich and convenient life. In order to develop green polymers, it is essential to understand that nature constructs a variety of materials that can be used. Plant materials such as cellulose, hemicellulose and lignin are the largest organic resources. Thermal Properties of Green Polymers and Biocomposites is unique in that it introduces thermal analysis applicable to green polymers and provides fundamental thermal properties of cellulose, polysaccharides and lignin. The book includes over 370 figures concerning thermal properties of green polymers with detailed experimental conditions. It also introduces newly patented environmentally compatible green polymers. Thermal properties provided include: thermogravimetry (TG), differential thermal analysis (DTA), differential scanning calorimetry (DSC), thermomechanometry (TMA) and dynamic mechanical analysis (DMA).This book covers two domains: This book is aimed at advanced users and specialists who are interested in green polymers and who utilize thermal analyses for the above polymers, especially in research laboratories, both academic and industrial.

In nature, green polymers (natural polymers) in plants and animals always coexist with water. The characteristic features of polymers organized in nature are difficult to understand without water. Specific features of green polymers are characterised via interaction with water molecules which strongly interact with the hydrophilic group of polymers. Molecular motion of the main chain of polysaccharides, whether extracted from wood, fungi, seaweed, or bacteria, is considerably enhanced in the presence of water. Not only in crystalline polysaccharides but also amorphous lignin, the effect of water on molecular motion is clearly observed by various experimental techniques. When the molecular motion of green polymers is investigated in the presence of water, molecular rearrangement occurs by the introduction of water into the system, and the higher-order structure is rearranged during molecular movement by heating conditions. Phase transition behaviour of water molecules is also affected in the presence of hydrophilic polymers, such as polysaccharides. Molecular enhancement of water molecules and hydrophilic polymers cooperate with each other and phase transition behaviour of the above system also corresponds to the above motion. Even the first-order phase transition of water is affected in the presence of polysaccharides. When glass transition behaviour of the natural polymer-water system is investigated, it is important to take into consideration the fact that the structural change of both components has necessarily taken place. In this book, the molecular relaxation of green polymers, especially the thermodynamic concept of green polymers and the bound water, will be described in Chapter 2. Various techniques to measure the glass transition of green polymers in dry and wet conditions are explained in Chapter 3. Special attention is paid to sample handling for controlling water content. Glass transition behaviour of various polysaccharides and model compounds is described in Chapter 4. An explanation of lignin and its synthetic model polymers is also given in Chapter 5.

Environmentally compatible polymers (green polymers) are the key to sustainable developments for our rich and convenient life. In order to develop green polymers, it is essential to understand that nature constructs a variety of materials that can be used. Plant materials such as cellulose, hemicellulose and lignin are the largest organic resources. Thermal Properties of Green Polymers and Biocomposites is unique in that it introduces thermal analysis applicable to green polymers and provides fundamental thermal properties of cellulose, polysaccharides and lignin. The book includes over 370 figures concerning thermal properties of green polymers with detailed experimental conditions. It also introduces newly patented environmentally compatible green polymers. Thermal properties provided include: thermogravimetry (TG), differential thermal analysis (DTA), differential scanning calorimetry (DSC), thermomechanometry (TMA) and dynamic mechanical analysis (DMA). This book covers two domains: -Fundamentals of thermal properties of cellulose, polysaccharides and lignin (Chapters 3 to 5); -Developments of new biocompatible polymers derived from plant materials (Chapters 6 to 8). This book is aimed at advanced users and specialists who are interested in green polymers and who utilize thermal analyses for the above polymers, especially in research laboratories, both academic and industrial.

This book introduces biomass which is utilized all over the world based on geographical, cultural, and historical background. It covers 18 major biomass types and several specific plants categorized into 3 groups based on their usage. The present and historical background of representative materials from biomass, such as cellulose, lignin, chitin, sugar, molasses, amylose, and other interesting natural biopolymers, such as hyaluronan, gum Arabic, and others are introduced. Furthermore, characteristic features of representative and influential plants, such as rice, eucalyptus, and oil palm are described together with historical episodes. Although physicochemical characteristic properties of each material and plant have been published over many decades, scarcely a comprehensive introduction on biomass together with Asian, European, and Latin American cultural backgrounds. In this book, biomass familiar to everybody’s life is introduced based on scientific and cultural viewpoints. It guides readers to gain background knowledge of targeting biomass to be developed as industrial resources. In addition to students, scientists, and lecturers, the book will be useful for industrial engineers, both specialists in polymer science and technology and materials experts.