Nanocomposite fibers of poly(ethylene terephthalate) with montmorillonite and mica: thermomechanical properties and morphology

Abstract

The thermal stabilities, mechanical properties, and morphologies of nanocomposites of poly(ethylene terephthalate) (PET) with two different organoclays are compared. Dodecyltriphenylphosphoniummontmorillonite (C 12 PPh-MMT) and dodecyltriphenylphosphonium-mica (C 12 PPh-Mica) were used as reinforcing fillers in the fabrication of PET hybrid fibers. The variations of their properties with organoclay content in the polymer matrix and draw ratio (DR) are discussed. Transmission electron microscopy micrographs show that some of the clay layers are dispersed homogeneously within the polymer matrix on the nanoscale, although some clay particles are agglomerated. It was also found that the addition of only a small amount of organoclay is enough to improve the thermal stabilities and mechanical properties of the PET hybrid fibers. Even polymers with low organoclay contents (1-5 wt%) were found to exhibit much higher strength and modulus values than pure PET. In the case of C 12 PPh-MMT/PET, the values of the tensile mechanical properties of the hybrid fibers were found to decrease linearly with increases in DR from 1 to 16. However, the tensile mechanical properties of the C 12 PPh-Mica hybrid fibers were found to be independent of DR.

Poly(ethylene terephthalate) nanocomposite fibers with functionalized multiwalled carbon nanotubes via in‐situ polymerization

“…Previous work 37 in our laboratory has demonstrated the possibility of a reinforcing effect in PET hybrids with various organoclay contents. In contrast to the results for the PET hybrid fibers containing 1-5 wt % organoclay with increases in DR from 1 to 16, similar results in functionalized-MWNT/PET hybrid fibers were observed for all hybrids.…”

Transparent Pullulan/Mica Nanocomposite Coatings with Outstanding Oxygen Barrier Properties

“…For this reason, the use of synthetic NBBs as attractive nanomaterials is rising at both the academic and industrial level. Until now, only a few studies have dealt with the use of mica in nanocomposites including thermoset and thermoplastic polymers in order to improve barrier performance [3,4] and mechanical properties [2,[5][6][7]. There is, however, a gap in the literature that this work aims to fill, specifically dealing with advances regarding mica-based biopolymer nanocomposite coatings.…”

Studies on Mechanical, Thermal properties and Characterization of Nanocomposites of Nylon-6 –Thermoplastics Poly Urethane Rubber [TPUR] blend

“…The [27]. Hence, since thermal stability was better in MMT, the flame resisitance was better in Na + Nano clay.…”

“…Hence, in this present study, our interest is to know the effect of nanofiller montmorillonite on the mechanical and thermal properties of nylon-6 TPUR blend [85:15%]. The unmodified Cloisite, [natural montmorillonite] has higher thermal stability upto 600 °C [27]. S.g. 2.86 gm/cc, Moisture content <= 2%, particle Size: <=2  about 10%, <=6  about 50%, and <=13  about 40%.…”