An overview on obtaining foamed PET by reactive extrusion

Dominika Misiura,

Tomasz M. Majka

Abstrakt
Many methods are used to obtain functional polymer foams. This review focuses on reactive extrusion of poly(ethylene terephthalate). This process is based on the reaction between PET and the appropriate blowing agent. The next step is the creation of foam by closing gas cells in the polymer matrix. This method of modification allows material with higher molecular weight to be obtained and, therefore, higher melt strength. The use of different chemical modifiers and their concentration influences properties of created foam. The enhanced features of foamed PET allow it to be used in many areas of application such as transport, construction or general industry. Another big advantage of this technique is the possibility of using recycled materials as the source of PET.
Słowa kluczowe: PET, Foams, Reactive extrusion
References

[1] Geyer, Jambeck, Production, use, and fate of all plastics ever made, Law Sci. Adv. 2017, 3.
[2] Raffa, Coltelli, Savi,Bianch, Castelvetro, Chain extension and branching of poly(ethylene terephthalate) (PET) with di- and multifunctional epoxy or isocyanate additives: An experimental and modelling study, Reactive & Functional Polymers, 2012, 72.
[3] Tavares, Silva, Lima, Andrade, Canedo, Chain extension of virgin and recycled polyethylene terephthalate, Polymer Testing, 2016, 50.
[4] Awaja, Daver, Kosior, Cser, The Effect Of Chain Extension On The Thermal Behaviour And Crystallinity Of Reactive Extruded Recycled Pet, Journal of Thermal Analysis and Calorimetry, 2004, 78.
[5] Dimonie, Socoteanu, Pop, Fierascu, Fierascu, Petrea, Zaharia, Petrache, Material Recycling – Trends and Perspectives: Overview on Mechanical Recycling by Chain Extension of POSTC-PET Bottles, InTech, 2012.
[6] Kozłowski, Kozłowska, Frąckowiak, Materiały polimerowe o strukturze komórkowej, Polimery, 2010, 55.
[7] Maio, Coccorullo, Montesano. Incarnato, Chain Extension and Foaming of Recycled PET in Extrusion Equipment, Macromol. Symp., 2005, 228.
[8] Japon, Leterrier, Manson, Recycling of Poly(Ethylene Terephthalate) Into Closed-Cell Foams, Polymer Engeneering and Science, 2000, 40.