João Paulo Miranda Ribeiro Borges, Maria Helena Figueiredo Godinho
Weekly - 5
Total - Available soon
J.B.Ferreira, "Física dos Polímeros", FCT/UNL, 2004
P.J.Flory, "Principles of Polymer Chemistry", Cornell Univ. Press, 1978
R.J.Young, "Introduction to Polymers", Chapman and Hall, London, 1981
L. R. G. Treloar, "The Physics of Rubber Elasticity", Clarendon Press, Oxford, 1975
E. Hecht, "Óptica", Fundação Calouste Gulbenkian, Lisboa, 2012
The teaching of this unit involves three aspects: a theoretical formation on the to pics of the syllabus, which is the purpose of the theoretical classes, experimental work, in groups, in the Laboratory, and one or two guided visits to industrial factories working in the area of polymers. Emphasis is given to the understanding of the topics in the program of the unit. In the practical classes, the students are asked to discuss and solve the problems proposed, in groups, with the help of the teacher.
The unit has a practical component, leading to a mark NP, and a theoretical-practical component, leading to a mark NT. Both range from 0 to 20 points. For approval in the unit, with a final mark N, a student needs a mark of at least 10 points in each component. N will be given by
N = 0,2 NP + 0,8 NT.
NP is an average mark obtained in the labs work evalution (report or individual quiz, which are mandatory), and NT can be obtained in two different ways: either by averaging the marks obtained in two written tests, or alternatively, it is the mark obtained in a final exam.
To perform the UC by continuous evaluation it is necessary that the grade of the 1st test is not lower than 7.0 values. Otherwise, the student is admitted to the exam, provided he obtained NP higher than 9.5 val..
The students must carry out all the lab sessions, otherwise they will be excluded.
Conformation and structural models of polymer chains. Statistics of the freely jointed chain, end-to-end distance and its statistical distribution, gyration radius. Equation of state of a polymer chain. Real chains in dilute solutions. Dilution: method of chain isolation. Intrinsic viscosity. Effects of the excluded volume. Good and bad solvents. Entanglements. Conformation of chains in solids and isotropic liquids. Thermodynamics of polymer solutions. Flory-Huggins theory. Dilute polymer solutions. Sol-gel transition. Rubber vulcanization. Theory of rubber elasticity.