Abstract
Nylon 11/ethylene-vinyl alcohol (EVOH) composites with various concentration of dicumyl peroxide (DCP) were prepared using a single-screw extruder. The influence of DCP concentration on the mechanical properties and rheological behavior of nylon 11/EVOH composites as well as gel content was investigated. The experimental results showed that the impact and tensile strength were significantly improved when the DCP loading was in the range of 1.0~1.5 wt% while the elongation at break reduced. All nylon 11/EVOH melts with and without DCP were pseudoplastic and exhibited shear-thinning behavior. The apparent viscosity of composites was increased dramatically with the addition of DCP and was up to the maximum value at 1.5 wt% DCP level, which indicated that the interfacial adhesion owe to co-crosslinking between nylon 11 and EVOH was increased markedly.
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Acknowledgement
This work was financially supported by the Science and Technology Foundation for Young from Shanxi Sci and Tech Bureau (Grant No. 2006021011), the Science and Technology Foundation of North University of China.
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Ding, Zy., Hu, Gs. & Wang, Bb. Effect of in situ co-crosslinking on mechanical properties and rheology of nylon 11/EVOH/DCP composites. J Polym Res 14, 511–517 (2007). https://doi.org/10.1007/s10965-007-9136-4
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DOI: https://doi.org/10.1007/s10965-007-9136-4