The microphase separated structure formed in the PA6/PP-g-(GMA-co-St) reactive blend system

In this paper, the phase morphology of the PA6/PP-g- (GMA-co-St) blends was investigated by means of transmission electron microscopy(TEM). The unifor m and fine dispersed phase was observed. The size of the dispersed phase wa s less than 0.5 mu m. It was also found that the microphase separated struc ture formed in the blends. FTIR spectra revealed that the PP-PAG graft copo lymers formed in situ by chemical reactions occurred between epoxy groups o f PP-g-(GMA-co-St) and the terminal amino or carboxylic groups of PA6 durin g the melt mixing. The formation of the microphase separated structure shou ld be related to the in situ formed PP-PAG graft copolymer.