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Lecture: Microstructures in Polymers

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Textbook: Plastics: Materials and Processing (Third Edition), by A. Brent Young (Pearson, NJ, 2006).Structure and Properties of Engineering PolymersLecture: Microstructures in PolymersNikolai V. PriezjevMicrostructures in Polymers Gas, liquid, and solid phases , crystalline vs. amorphous structure, viscosity Thermal expansion and heat distortion temperature Glass transition temperature, melting temperature, crystallization polymer degradation, aging phenomena Molecular weight distribution, polydispersityindex, degree of polymerization Effects of molecular weight, dispersity, branching on mechanical properties Melt index, shape (steric) effectsReading: Chapter 3 of Plastics: Materials and Processingby A.

The classification of phase transitions proposed by Ehrenfest is based on the behavior of G near the phase transformation. First-order phase transition: first ... Differential scanning calorimetry (DSC) method Thermomechanical analysis (TMA) = …

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