PETG is the glycol-modified copolyester of poly(ethylene terephthalate), in which part of the ethylene glycol is replaced by cyclohexanedimethanol, suppressing crystallisation and keeping the material transparent and melt-processable [1]. In stretched miscible blends with polyethylene naphthalate, PETG reshapes the crystallization behaviour of the stiffer partner [1]. As a reusable and biocompatible substrate it serves cell culture, an unexpected role for a packaging polyester [2]. Blending PETG with thermoplastic polyurethane yields 4D-printable shape memory parts [3]. Recycled PETG fed into additive manufacturing has been examined as a feasibility study for circular material loops [4].
- amorphous copolyester
- glycol-modified polyester
- 4d printing
- shape memory
- recycling
- cell culture substrate
Polymer Science and Applications·Mechanical Engineering·Engineering·Physical Sciences
References
- Jheng, L.C.; Yang, C.Y.; Leu, M.T.; Hsu, K.H.; Wu, J.H.; Ruan, J.; Shih, K.C.; Novel impacts of glycol-modified poly(ethylene terephthalate)(PETG) to crystallization behavior of polyethylene naphthalate (PEN) within stretched miscible blends. Polymer 2012, 53, 2758-2768, 10.1016/j.polymer.2012.04.035.
- Vita, A.; Tiberio, F.; Sibilia, D.; Salvati, M.; Tosi, D.D.; Di Pietro, L.; Alliva, A.; Mariella, C.; Parolini, O.; Lattanzi, W.; et al. Polyethylene Terephthalate Glycol-Modified (PETG) as a Reusable and Biocompatible Substrate for Cell Culture Applications. Journal of Functional Biomaterials 2026, 17, 336, 10.3390/jfb17070336.
- da Cunha, R.B.; Brito, L.B.Q.; Agrawal, P.; Brito, G.d.F.; Mélo, T.J.A.d.; 4D printing of shape memory polyethylene terephthalate glycol/thermoplastic polyurethane (PETG/TPU) blends. Journal of Manufacturing Processes 2024, 119, 596-608, 10.1016/j.jmapro.2024.04.017.
- Bremer, M.; Janoschek, L.; Kaschta, D.; Schneider, N.; Wahl, M.; Influence of plastic recycling—a feasibility study for additive manufacturing using glycol modified polyethylene terephthalate (PETG). SN Applied Sciences 2022, 4, 156, 10.1007/s42452-022-05039-3.