Effect of P(St-EGDMA)/P(MMA-St-BA-MA) core shell particles on dyeable fine polypropylene fibres

Dyeable fine polypropylene (PP) fibre has remained a problem for decades. In this paper, blends of PP with P(St-EGDMA)/P(St-MMA-BA-MA) [poly(styrene-ethylene glycol dimethacrylate)/poly(styrene-methyl methacrylate-butyl acrylate-methyl acrylate)] core shell particles, have been used for the preparation of dyeable fine PP fibres. Dyeing experiment showed that the incorporation of the designed core shell particles markedly enhanced the dyeability of fine PP fibres with three distinct disperse dyes and the shades of these dyed fine fibres were deep and bright. Mechanical tensile tests showed that the particles had slight effect on the mechanical properties of fine PP fibres. The designed core shell particles were relatively monodispersed with nanoscale, and were stable during the melt-spinning process. Spinning possibility of the blends and crystallinity and orientation of the dyeable fine PP fibres were also investigated. The possible reasons for the increased depth of shade were proposed.