PEM5141 - Polymers Degradation, Stabilization, Aging and Recycling
Form professor
Prof. Dr. Clodoaldo Saron
Workload
| Theoretical |
Practical |
Study |
Duration |
Total |
Credits |
| 4 hours/week |
2 hours/week |
6 hours/week |
15 weeks |
180 hours |
12 |
See on Janus (pt-br)
Concentration area
97135 - Conventional and Advanced Materials
Objectives
To qualify the postgraduate student to development researches in the area of polymeric materials related to the degradation caused by thermomechanical processing, ultraviolet radiation, thermal exposition at long period of time and microorganism. At the end of course, the student should have knowledge to choose appropriate additives that can extend the lifetime of polymers or accelerate their degradation as well as their permanence in the environment. The description on methods for aging and recycling of polymers will allow also that the student will can evaluate the potential of reuse of polymeric waste from post consume and postindustrial origin.
Motivation
The discipline PEM5141 is the only of the Program of Post-Graduation in Engineering of Materials – PPGEM that describes the subject on thermo-mechanical processing of polymer, additives, degradation, stabilization and recycling of polymers. Therefore, this course strengthens the set of disciplines of the PPGEM and offers an option for students that wish specialization in the area of polymeric materials.
Syllabus
- Polymer Degradation: mechanisms of degradation of polymers on absence of oxygen for polymers with stable and instable chemical structures, mechanisms of degradation for polymers on presence of oxygen, degradation of PVC, photodegradation, thermodegradation, biodegradation, promoters degradation agents.
- Polymer Stabilization: classification of stabilizers as action, stabilizers of kind absorber of UV light, occultation agents, anti-oxidation agents (primary and secondary) hindered amines light stabilizes (HALS), metals deactivators.
- Polymer Aging: natural aging, natural aging on controlled conditions, accelerate photochemical aging with Xenon lamps, accelerate photochemical aging with mercury vapor lamps, accelerate thermal aging and biodegradation tests in polymers.
- Polymer Recycling: primary recycling of postindustrial waste, secondary recycling of post consume waste, tertiary or chemical recycling and quaternary recycling or recover of energy. Challenges for polymer recycling. Viability for recycling of polymeric systems. Methods used for polymer recycling. Perspectives for recycled polymer market.
Evaluation criteria
- Written test (30%)
- Experimental practice on the subject (20%)
- Seminar presentation (50%)
References
- De Paoli, M.A. Degradação e estabilização de polímeros. 1. Ed., Artiliber editora, São Paulo, 2009.
- Rabello, M.S.; De Paoli, M.A. Aditivação de termoplásticos. 1ª. Ed. Artliber editora. São Paulo, 2013.
- Piva, A.M. Reciclagem do plástico – como fazer da reciclagem um negócio lucrativo. 1ª. Ed., Artliber editora, São Paulo, 2004.
- Fairgrieve, S. degradation and stabilization f aromatics polyesteres. 1a. Ed., iSmisssthers Rapra Publ., London, 2009.
- Fairgrieve, S. Degradation and stabilization ou polyamides, 1ª. Ed., iSmisthers Rapra Publ., London, 2008.
- Goodship, V. Introduction to plastics recycling. 2ª. Ed., iSmisthers Rapra Publi., London, 2007.