the effect of nanoclay, pp and pp-g-ma type on dyeing properties of pp/clay nanocomposite with various dyes: a way to investigate the dyeability mechanism

Polypropylenes loaded with different alkyl ammonium-modified montmorillonite are prepared to utilize a melt-mixing technique in various ways. two types of polypropylene and compatibilizer are incorporated to improve the dispersion of various types of nanoclay and the dyeing behavior of the nanocomposites with various disperses, acid and basic dyes were studied. for the first time, the aim of this study was to investigate the effect of operational and material parameters in dyeing behavior and color buildup of producing nanocomposite due to better understanding of the dyeability mechanism of pp/nanoclay composite. the extent of exfoliation and dispersion of the nanoclay in pp was analyzed by xrd and tem analytical techniques and the dyeability was studied through color build up and spectrophotometric measurement. the results showed that the mixing condition had no significant effect on dyeability. the lower the molecular weight of polypropylenes and compatibilizer caused the better the dyeability. the most intercalated nanocomposite also showed better dyeability and within various types of dye, disperses dye showed better dyeability. all things considered, it is appeared that between the two mechanisms suggested for dyeing improvement in the pp/nanoclay composite, the dominant mechanism is creating the path.