16067

A Study of the Nucleation Effect of Pigment Dyes on the Microstructure of Mass Dyed Bulked Continuous Filament Polypropylene

Tavanai Hossein نويسنده , MORSHED MOHAMMAD نويسنده , Zarebini Mohammad نويسنده , Salehi Rezve Ali نويسنده

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The nucleation effect of 6 pigment dyes, namely: C.1. Pigment Yellow 83, Red 48, Blue 15, Violet19, Black 7 and White 6 on the microstructure of mass dyed BCF polypropylene i.e., crystallization temperature. melting point, percentage crystallinity, and birefringence has been studied by means of polarizing light microscope, DSC and FTIR. Tenacity and thermal shrinkage have also been studied. The results indicated that Yellow 83, Blue 15 and Black 7 act as monoclinic nucleating agents, whereas Violet19 and White 6 act as hexagonal nucleating agents. The nucleation effect of Red 48 seems to be negligible. Depending on the type of nucleation, the above mentioned parameters characterizing the microstructure of the fibres are affected. The birefringence of all coloured polypropylene fibres decreased as a result of pigment dyes added to the fibres. This leads to a reduction of the tenacity and thermal shrinkage of mass dyed BCF yarns.

1199822