| 초록 |
Vitrimers are cross-linked polymers with associative covalent adaptable networks, where exchangeable chemical bonds enable the melt processing of cross-linked materials. The cross-link density in vitrimers does not change during the exchange reaction and reprocessing, thus vitrimers exhibit unique viscoelastic and flow properties. Therefore, it is important that understand the effect of the exchange mechanism on polymer characteristics. In this study, the flow properties of vitrimers were studied under controlled exchange reactions using a combination of two catalysts. Two different catalysts with different activation energies were utilized. The fluidity of vitrimers at varying temperature were investigated using a rheometer and dynamic mechanical analysis. |
