Chiang Mai Journal of Science

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Relevant developments in one step reactive blends of immiscible polymer NR/PA6 have shown that the suitable reaction is the combination of free radical and condensation reactions. The NR and PA6 compatible blends have shown how efficient the amphiphilic species are throughout the reactive reaction. The induced reactivity in a single screw extrusion is based on a mixture of peroxide (Perkadox 14), reactive monomer (maleic anhydride) and activators (ZnO and stearic acid). In the case of NR/PA6 60/40 blends, their morphology can be changed from co-continuous to reversion phase using rubber particles dispersed in PA6 phase. Dynamic vulcanization process has been done on the same single screw extruder using a phenolic resin (SP-1045) as a vulcanizing agent. The blend’s morphology has a great effect on physical properties. The finely NR cross-linked dispersed phase blends have good mechanical properties. It has also shown very good oil resistance and it can be used at high temperature of 200^oC.

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