Comparative analysis of new-generation thermoplastic polymers: Cyclic olefin copolymer and polycarbonate urethane elastomers
     
Yazarlar (2)
Arş. Gör. Zühal YURTBAŞI Yalova Üniversitesi, Türkiye
Doç. Dr. Alper KAŞGÖZ Yalova Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Journal of Elastomers and Plastics (Q3)
Dergi ISSN 0095-2443 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 04-2025
Cilt / Sayı / Sayfa 57 / 3 / 285–314 DOI 10.1177/00952443251314826
Makale Linki https://journals.sagepub.com/doi/abs/10.1177/00952443251314826
Özet
In this study, the thermal, rheological, mechanical, and viscoelastic properties of two new-generation thermoplastic polymers, namely cyclic olefin copolymer (COC) and polycarbonate urethane (PCU) elastomers, were compared to those of a conventional thermoplastic elastomer, thermoplastic polyurethane (TPU). Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) were used for thermal examinations, while rheological, tensile, and solid-state creep tests were used for viscoelastic and mechanical analyses. The DSC results revealed that all elastomers had two different Tg values, which were −23 and 7.5°C for PCU, −40 and 95°C for TPU, and 4 and 55°C for COC. Moreover, PCU had an amorphous and more compatible structure than PCU and TPU. In the DMA, it was also observed that COC melted at approximately 90°C, while PCU and TPU melted at about 155°C. In the tensile tests, it was observed that COC showed higher strength at 30°C, but it lost its strength more effectively than the other polymers with increasing temperature and exhibited similar performance to all specimens at 50°C. Finally, in the solid-state creep tests, COC exhibited the highest creep resistance at 30°C, while its creep strain increased with temperature more effectively than those of the other elastomers.
Anahtar Kelimeler
cyclo-olefin copolymer | polycarbonate urethane | Thermoplastic elastomer | thermoplastic polyurethane | viscoelastic properties