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existing methods for polymer characterization are enumerated and discussed in this chapter. The following chapters go into more detail. For most applications-textiles, films, molded or extruded objects of all kinds-the mechanical and the thermal behaviors of polymers are of pre ponderant importance, followed978-1-4684-4750-7978-1-4684-4748-4gonioscopy 发表于 2025-3-22 02:29:03
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Chemical Structure of Polymers,ose and starch, have been utilized for food, shelter, and clothing for thousands of years. Cellulose, polyisoprene, and shellac were converted to useful man-made plastics, fibers, and elastomers in the 19th century, but these conversions were based primarily on empirical knowledge.GULLY 发表于 2025-3-22 18:21:48
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Electric Properties of Polymers,ty, ac conductivity, and electric breakdown strength. The term . usually refers to the variation of these properties within materials as a function of frequency, composition, voltage, pressure, and temperature.掺假 发表于 2025-3-23 08:02:35
Physical Structure of Polymers,The molecular weight or molar mass of proteins and nucleic acids (DNA, RNA) is identical for each specific species, e.g., the molecular weights of all casein molecules from a specific source are identical. These polymers are members of a homologous series and are said to be . or ..