2018 Polymer Course

Course on Introduction to the structure and properties of polymers

 

Place: Auditorium of Joxe Mari Korta Center, POLYMAT, University of the Basque Country, UPV/EHU, May 21-22, 2018 (10 h  in four sessions)

Given by Professors Alejandro J. Müller and Antxon Santamaria (UPV/EHU)

 

Free registration (Maximum  40 persons): Please complete the on-line registration form  before May 15, 2018.

 

Programme

May 21st, 2018

Session 1: From 9:30 to 12:30 h with a 30 min coffee break recess (A.J. Müller)

Introduction and physical classification of polymers. State diagrams temperature-molecular weight. Why some polymers crystallize and others remain amorphous?

Structure and morphology. The amorphous state. Structure and morphology of semicrystalline polymers. Crystallization from solution: Single crystals (lamellar single crystals). Crystallization from the melt: Spherulites and other supermolecular structures. Experimental techniques to study morphology and structure: WAXS, SAXS, TEM, SEM, PLOM. Crystallinity degree and its determination.

 

Session 2: From 15:00 to 18:00 h with a 30 min coffee break recess (A. Santamaria)

Introduction to Rheology. The concept of Viscoelasticity. Viscoelastic models and exprimental methods. Stress relaxation. Time relaxation spectrum. Creep and recovery. Dynamic viscoelastic measurements. The viscoelastic regions in amorphous and semicrystalline polymers. Time-temperature superposition. Analysis of the terminal or flow viscoelastic zone. Viscosity and elasticity in polymer liquids. Effect of the molecular parameters on the viscosity and elasticity of polymer melts. Rheology and industrial processing.

May 22nd, 2018

Session 1: From 9:30 to 12:30 h with a 30 min coffee break recess (A.J. Müller)

Thermal properties of polymers. Thermal transitions including glass transition. Influence of structure on Tg. Physical ageing of amorphous polymers. Melting and its relationship with structure. Annealing. Differential Scanning Calorimetry and its applications. Introduction to isothermal crystallization kinetics measurements by DSC.

Session 2: From 15:00 to 18:00 h with a 30 min coffee break recess (A. Santamaria)

Dynamic viscoelastic measurements as a tool to characterize polymers. Dynamic Mechanical Thermal Analysis (DMTA) of solids. Evaluation of the glass transition temperature, Tg and sub Tg relaxations. Effect of the frequency on secondary relaxations. Effect of chemical and physical polymer features on the elastic (storage) and viscous (loss) moduli. Effect of charges and additives on the elastic (storage) and viscous (loss) moduli.