A description of the polymerization processes; polymer solutions (Flory- Huggins model and application to polymer blends); polymer chain conformations; calculation of end-to-end distribution function W(r) for short range interacting chains; rotational isomeric state scheme and temperature dependence; chain with long range interactions (excluded volume effect); radius of gyration; the crystalline and amorphous states of polymers; the glass transition (configurational entropy model); mechanical, electrical and optical properties and characterization of polymers.