TY - CONF
T1 - Relationship Between Melting Kinetics and Disentangled State of UHMWPE
AU - Romano, Dario
AU - Liu, Kangsheng
AU - Tops, Niek
AU - Rastogi, Sanjay
N1 - [1] (a) Rastogi, S.; Lippits, D.R.; Peters, G.W.M.; Graf, R.; Yao, Y.; Spiess, H.W. Nature Materials 2005, 4, 635. (b) Rastogi, S.; Yao, Y.; Ronca, S.; Bos, J.; Van der Eem, J. Macromolecules 2011, 44, 5558.
[2] (a) Romano, D.; Tops, N.; Andablo-Reyes, E.; Ronca, S.; Rastogi, S. Macromolecules 2014, 47, 4750-4760. (b) Liu, K.; E.L. de Boer; Yao, Y.; Romano, D.; Ronca, S.; Rastogi, S. Macromolecules, 2016, 49, 7497-7509.
PY - 2017
Y1 - 2017
N2 - Ultra-high molecular weight polyethylene (UHMWPE) is a simple polymer used for many engineering applications such as ballistic, medical and applications where high mechanical properties are desired. However, its processing has always been challenging due to the high melt viscosity caused by the large number of entanglements [1]. Recently, a major processing improvement has been achieved thank to the synthesis of UHMWPE having reduced amount of entanglements in the amorphous phase of the semi-crystalline polymer. The reduced amount of entanglements allows the polymer to be solid-state processed into tapes having unprecedented mechanical properties. So far, melt rheology has been used to characterize the entangled state of the polymer produced. In this study, we made use of differential scanning calorimetry (DSC) and temperature-modulated-DSC (TM-DSC) to determine the entangled state of the synthesized UHMWPE samples. DSC has been found to be a tool to estimate the disentangled state of the UHMWPE. It has been found a good correlation between the disentangled state as depicted by rheology and the disentangled state as depicted by DSC. Correlations between the melting kinetic, mechanical properties and the solid-state processing of the oriented tapes have been found [2].
AB - Ultra-high molecular weight polyethylene (UHMWPE) is a simple polymer used for many engineering applications such as ballistic, medical and applications where high mechanical properties are desired. However, its processing has always been challenging due to the high melt viscosity caused by the large number of entanglements [1]. Recently, a major processing improvement has been achieved thank to the synthesis of UHMWPE having reduced amount of entanglements in the amorphous phase of the semi-crystalline polymer. The reduced amount of entanglements allows the polymer to be solid-state processed into tapes having unprecedented mechanical properties. So far, melt rheology has been used to characterize the entangled state of the polymer produced. In this study, we made use of differential scanning calorimetry (DSC) and temperature-modulated-DSC (TM-DSC) to determine the entangled state of the synthesized UHMWPE samples. DSC has been found to be a tool to estimate the disentangled state of the UHMWPE. It has been found a good correlation between the disentangled state as depicted by rheology and the disentangled state as depicted by DSC. Correlations between the melting kinetic, mechanical properties and the solid-state processing of the oriented tapes have been found [2].
M3 - Poster
ER -