RAPID COMMUNICATION: Effect of oxazoline grafted polyethylene on the structure
and properties of poly(butylene terephtalate)/polyamide 6 blends (in English)
Polimery 2004, No 5, 350
Structural phases and blends properties of poly(butylene terephthalate)/polyamide 6 blends were studied in a chemical modification involving reactive extrusion with aricinol-2-oxazoline methylmaleate (ROM) grafted polyethylene. The interfacial reaction between blend components were studied by differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The static tensile and flexural properties and impact resistance response of the blends were tested. According to DSC data, the reactive processing results in formation of heterogenous blends. Phase structure and mechanical behavior studies showed that interfacial reactions between PE-g-ROM, poly(butylene terephthalate) and polyamide 6 containing co-reactive groups were effective in the compatibilization of blends investigated. Phase morphology of the blends was of interpenetrating polymer network (IPN) type according to SEM results which was in accordance with learnings from DTA spectra. FT-IR, DSC and DTA investigations suggest evidence for the chemical reaction. The graft polymer formed during the reactive extrusion results in an alloy with good interfacial adhesion and high impact resistance.
Keywords: PBT/PA 6 blends, compatibilization, oxazoline functionalized low density polyethylene, ricinol-2-oxazoline methylmaleate, reactive extrusion, morphology, mechanical properties
Effect of oxazoline grafted polyethylene on the structure and properties of poly(butylene terephtalate)/polyamide 6 blends (in English)