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Risorse bibliografiche
Risorsa bibliografica obbligatoria
Risorsa bibliografica facoltativa
Scheda Riassuntiva
Anno Accademico 2021/2022
Scuola Scuola di Ingegneria Industriale e dell'Informazione
Insegnamento 056926 - POLYMER TECHNOLOGIES FOR CIRCULAR ECONOMY
Docente Turri Stefano Ettore Romano
Cfu 5.00 Tipo insegnamento Monodisciplinare

Corso di Studi Codice Piano di Studio preventivamente approvato Da (compreso) A (escluso) Insegnamento
Ing Ind - Inf (Mag.)(ord. 270) - MI (491) MATERIALS ENGINEERING AND NANOTECHNOLOGY - INGEGNERIA DEI MATERIALI E DELLE NANOTECNOLOGIE*AZZZZ052256 - POLYMER TECHNOLOGY AND SUSTAINABILITY FOR ENG4SD
089723 - POLYMER TECHNOLOGY AND SUSTAINABILITY
056926 - POLYMER TECHNOLOGIES FOR CIRCULAR ECONOMY

Obiettivi dell'insegnamento

One general objective of the course is the introduction of the students to the general topics of sustainability and circular economy, with particular reference to the case of polymer industry.

Another more specific objective is the study of theoretical and practical aspects related to mechanical and chemical recycling technologies for end-of-life plastics.

A third objective of the course is the description of bioplastics, including their production, chemical microstucture, physical properties and biodegradation behaviour.


Risultati di apprendimento attesi

After attending the course and after the final examination, the student will: 

  • know and understand the fundamentals of circular economy
  • know the different types of available polymer recycling technologies, including logistical and regulatory implications
  • know and understand the main physico-chemical principles related to polymer technology
  • know the main types of additives and industrial machinery to be used in polymer mechanical reprocessing, and how to design, select and optimize them on the basis of the desired set of material performances
  • know the main types of available polymers from renewable sources as well as biodegradable polymers
  • know the main phases and the structure of a Life Cycle Assessment study
  • be able to apply the above described knowledge aimed at the design and selection of optimal components and machinery for the production or recycling of a polymeric compound at industrial scale
  • be able to apply the above described knowledge to the quantitative evaluation of the environmental impacts of a polymer product or process according to a cradle-to-gate approach

 These learning outcomes are expected to provide the student with the needed knowledge tools necessary for successfully performing their future activities in an industrial environment, with particular reference to polymer recycling and compounding industry, their technological testing, and the evaluation of the associated environmental impacts


Argomenti trattati

The main topics of the course are:

1) Fundamentals of circular economy and overview of the global market of plastics; national and EU regulations for end-of-life plastics management

2) Polymer recycling technologies: logistics and pretreatments, separation and sorting techniques, mechanical recycling, chemical recycling, energy recovery

3) Review of physico-chemical principles applied to polymer technology; solubility thermodynamics for polymer-based binary mixtures; diffusivity, barrier properties in packaging materials, mechanisms of loss of additives; wettability, contact angle, hysteresis, determination of surface tension components, work of adhesion and Young-Duprè equation

4) Mechanical recycling: shredding, mixing, flow analysis; quality of mixtures, intensity and scale of segregation; liquid-liquid miscible mixing, liquid-liquid immiscible mixing, solid-liquid mixing; analysis of the twin-screw extrusion process, other mechanical mixers, design of mixing elements, examples of industrial compounding cycles

5) Polymer degradation behaviour: thermal degradation, photodegradation, oxidative degradation, hydrolysis; analytical techniques to monitor polymer degradation and durability; accelerated tests; selection of thermal and photochemical stabilizers; reaction to fire and polymer combustion; fire retardant additives; testing and regulations.

6) Additives for polymer compounding: plasticizers and fillers, nanofillers and nanocomposites, tribology and self-lubricating compounds; pigments, colour mixing and colour matching technologies, Kubelka-Munk equations

7) Chemical recycling, pyrolysis and solvolysis; reversible chemistries for polymer repair and recycling 

8) Recycling of composites and rubbers 

9) Biodegradation and bioplastics; polymeric materials from renewable resources, enzymatic degradation; biodegradation testing and regulations; specific cases of biopolyesters and polysaccharides (starch-based blends)

10) Fundamentals of Life Cycle Assessment, the main phases of a LCA study, application examples to some cases in the polymer industry sector through simulation softwares

 


Prerequisiti

A background in polymer science and technology is required.


Modalità di valutazione

The examination will be an oral discussion about one or more of the course topics, chosen by the examiner. The student (or a group of students) can also propose to elaborate on a specific topic of the course, and to show the results of this study in form of public presentation. The student must be also able to clearly describe and critically discuss the proposed topics, highlighting the hypotheses, assumptions, critical points, the physical meaning and its consequences, including the mathematical approach where needed . The student should also be able to apply the theoretical knowledge to solving specific problems or troubleshooting some situations typically met in a real industrial environment.


Bibliografia
Risorsa bibliografica obbligatoriaLecture's notes
Risorsa bibliografica facoltativaL. Mascia, The role of additives in plastics, Editore: Arnold, Anno edizione: 1974, ISBN: 0713133287
Risorsa bibliografica facoltativaC. Rauwendaal, Polymer Mixing, Editore: Hanser, Anno edizione: 1998, ISBN: 1-56990-223-2
Risorsa bibliografica obbligatoriaS.A. Ashter, Introduction to Bioplastics Engineering, Editore: Elsevier, Anno edizione: 2016

Software utilizzato
Nessun software richiesto

Forme didattiche
Tipo Forma Didattica Ore di attività svolte in aula
(hh:mm)
Ore di studio autonome
(hh:mm)
Lezione
35:00
52:30
Esercitazione
10:00
15:00
Laboratorio Informatico
0:00
0:00
Laboratorio Sperimentale
5:00
7:30
Laboratorio Di Progetto
0:00
0:00
Totale 50:00 75:00

Informazioni in lingua inglese a supporto dell'internazionalizzazione
Insegnamento erogato in lingua Inglese
Disponibilità di materiale didattico/slides in lingua inglese
Disponibilità di libri di testo/bibliografia in lingua inglese
Possibilità di sostenere l'esame in lingua inglese
Disponibilità di supporto didattico in lingua inglese
schedaincarico v. 1.7.2 / 1.7.2
Area Servizi ICT
06/07/2022