Effect of nanoclay type on dyeability of polyethylene terephthalate/clay nanocomposites

Abstract

Polyethylene terephthalate (PET)‐based nanocomposites containing three differently modified clays were prepared by melt compounding. The influence of type of clay on disperseability, thermal, and dyeing properties of the resultant nanocomposite was investigated by various analytic techniques, namely, X‐ray diffraction, optical microscopy (OPM), differential scanning calorimetry, thermal gravimetric analysis, dynamical mechanical thermal analysis, contact angle measurement (CAM), reflectance spectroscopy, and light fastness. OPM images illustrated formation of large‐sized spherulites in pure PET, while only small‐sized crystals appeared in PET/clay nanocomposites. Decreased glass transition temperatures for all PET/clay nanocomposites indicate that the amorphous regions of such composites become mobile at lower temperatures than those in pure PET. CAMs on the resultant PET composites demonstrated that the wettability of such composites depends on hydrophilicity of the nanoclay particles. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

Physical and dyeing properties of poly(ethylene terephthalate)/montmorillonite nanocomposite filament yarns

“…This result could be attributed to the void space generation enabling more disperse dye penetration into the fiber. These results are confirmed by Parvinzadeh Gashti and Moradian [16]. Color strength values of the nanocomposite filaments delivered complementary results.…”

“…Poly(ethylene terephthalate) (PET) and its nanocomposites have a privileged position in plastics industry since they are widely used in packaging, construction, electronics, household, automobile, and textile industries [13, 14]. Furthermore, PET/montmorillonite nanocomposite fibers should be given a special attention since PET fibers occupy the leading position among synthetic fibers in textile industry due to their excellent textile properties such as abrasion resistance, good mechanical properties, durability, and good dimensional stability at a reasonable price [15, 16]. However, most investigations on PET/clay nanocomposites mainly concern their engineering plastic applications.…”

“…Apart from that, Parvinzadeh Gashti and Moradian investigated the dyeing properties of PET/clay nanocomposites. But their nanocomposites were not in filament yarn form [16]. Besides, only commercially available organomodified clays were used in both studies.…”

Extraction of polyphenolic dyes from henna, pomegranate rind, and Pterocarya fraxinifolia for nylon 6 dyeing

“…The dyeability of nylon 6 fibre thus depends on its physical and chemical structure. In this regard, the terminal carboxylic and amine groups as well as polyamide linkages play a dominant role in dyeability with anionic and cationic dyes . As terminal group ionisation is pH dependent, acidic pHs in the dyeing process give nylon 6 a net positive charge and render dyeability with the anionic domains of natural dyes.…”

Enhanced dyeability of poly(ethylene terephthalate)/organoclay nanocomposite filaments

“…Poly(ethylene terephthalate) (PET) has been the most commonly used synthetic fibre in textiles owing to its excellent textile properties, such as abrasion resistance, good mechanical properties, durability, and good dimensional stability at a reasonable price . Although the dyeability of PET and its compatibility with clay are of significance in fibre production and application, there are only few works on this issue.…”