For each chapter, understand fully each of the homework problems.
Ch. 16. Polymer Structures
The different types of stress-strain behaviors of polymers.
Effect of temperature on mechanical properties.
How semi-crystalline polymers deform.
Crystallization through nucleation and growth. Effect of temperature.
Solidification and what is the glass transition temperature.
Differences between thermoplastic and thermosetting polymers.
What is viscoelastic behavior.
How elastomers deform under a tensile load.
Fracture and grazing behavior.
Forms of polymerization.
What is vulcanization and what it is used for.
Ch. 19. Electrical Properties
What is Ohm's law and its origin.
The relationship between electrical conductivity s and
electron motion in metals.
How s depends on temperature, impurities and defects.
Energy bands and how they form.
The meaning of the Fermi level and of band gaps.
The difference between semiconductors and insulators.
What is a hole in a semiconductor.
How intrinsic and extrinsic semiconductors differ.
What makes a semiconductor be of n- or p-type.
The temperature dependence of s in different cases.
The periodic table around group IV, and what impurities of different groups do.
How a p-n junction diode works and how it rectifies current.
Conduction mechanisms in ceramics.
What is capacitance and what it depends on.
The meaning of dielectric constant.
The effect of a dielectric on a capacitor.
Types of polarization and the frequency dependence of the dielectric constant.
How can a ferroelectric material be polarized.