The text is very well written and illustrated. Title: Polymer Structures and Properties 1 Polymer Structures and Properties Polymer Research Center Institute of Applied Chemistry of NCTU. Many of the useful properties of polymers are in fact unique to polymers and are due to their long chain molecular structure. Types of thermophysical properties available for any polymer will depend on its structure (polymers can have the same chemical structure, but different physical structures depending on their formation and processing conditions) Engineering polymers include natural materials such as rubber and synthetic materials such as plastics and elastomers. Properties of Polymers . The organization and index make the book readily usable as a reference book. Ref INTRODUCTION TO POLYMERS 2nd edition, R. J. The identity and amount of the reagent used to crosslink the polymer chains. Properties of Nylon. A concise, illustrated presentation of polymer structure and bonding. Shape and structure dictate a polymer material’s behavior—how strong it is, how flexible, how responsive to temperature and even whether it can conduct electricity. The monomer polymerized or the monomers copolymerized. polymers produced by plants and animals, primarily proteins (collagen, keratin) and carbohydrates (cellulose, starch). These issues will be discussed at length in the next chapter. considering the presence of branching, crosslinking, distribution of chain … the type of monomeric unit forming the chain that affects the sample crystallinity and the physical properties. The nylon is referred to as nylon 6 if n = 5 which is another common form of this polymer. The reagent used to initiate the polymerization reaction. Polymers range from familiar synthetic plastic such as polystyrene to natural bio-polymers such as DNA and proteins that are fundamental to biological structure and function. 21.2 MECHANICAL PROPERTIES OF POLYMERS The commercial production of nylon 6 starts with caprolactam that use an open-ring polymerization. Dr. Ying-Chieh Yen ??? Physical Properties: Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. cessful for the prediction of the polymer properties start-ing from the knowledge of their molecular structure, is the topological index approach developed by Bicerano and coworkers, which uses a connectivity index and is the basis for commercial simulation packages that predict polymer properties [7]. The following variables can be controlled when producing a polymer. Chemists have also learned to synthesize new polymers from simple chemicals, creating a vast array of plastics and synthetic fibers. The latter concern the chain as a whole, i.e. In both the approaches, the polyamide is melt and drawn after cooling to obtain the desired properties of every intended use. Young and P. A. Lovell. Contributors; A comparison of the properties of polyethylene (both LDPE & HDPE) with the natural polymers rubber and cellulose is instructive. The former are related to the polymer fine structure, i.e. 5.1 PROPERTIES OF POLYMERS From the molecular shape itself—star, comb or brush—to how those molecules are arranged, our researchers are finding new ways to build polymers to unlock coveted properties that will provide the foundation for Polymer Structure. [A]n excellent introduction to a subject whose engineering importance is rapidly increasing. 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