Synthesis and characterization of poly(butylene terephthalate) nanocomposite fibers: Thermo‐mechanical properties and morphology

Abstract

Nanocomposites of poly(butylene terephthalate) (PBT) with the organoclay C 12 PPh-MMT were prepared using in situ intercalation polymerization. Hybrids with various organoclay contents were processed for fiber spinning to examine their thermal behavior, tensile mechanical properties, and morphologies for various draw ratios (DRs). The thermal properties (T g , T m , and T D i ) of the hybrid fibers were found to be better than those of pure PBT fibers and were unchanged by variation of the organoclay loading up to 2 wt %. However, these thermal properties remained unchanged for DRs ranging from 1 to 18. Most clay layers were dispersed homogeneously in the matrix polymer, although some clusters were also detected. The tensile properties of the hybrid fibers increased gradually with increasing C 12 PPh-MMT content at DR ϭ 1. However, the ultimate strengths and initial moduli of the hybrid fibers decreased markedly with increasing DR.

Effects of clay modification on crystallization behavior, physical, and morphological properties of poly(butylene terephthalate) nanocomposites

“…[18][19][20] In recent years, PBT/silicate layer nanocomposites have been studied by numerous researchers because good dispersion of the silicate layer greatly improves the thermal properties, mechanical properties and heat distortion temperature for application in engineering plastics. [21][22][23][24][25][26] Chang et al 26 investigated the morphologies, mechanical properties, and crystallization behaviors of PBT/montmorillonite (MMT) nanocomposites. Good dispersion of clay in a PBT matrix leads to increase in the mechanical properties, dynamic mechanical properties, melt viscosity and non-isothermal crystallization rates in comparison with homo PBT.…”

Polypropylene multifilament yarn filled with clay and/or graphite: Study of a potential synergy

“…In 2002, the use of nanoclays has emerged as an interesting way for developing multifunctional textiles when polyamide‐6 clay nanocomposite multifilament yarns were produced by Bourbigot et al6 Indeed, the authors demonstrated a decrease of about 40% of the heat release rate (HRR) of knitted structures made with polyamide‐6 nanocomposite compared to the virgin polyamide. Many researchers were therefore interested in the development of nanocomposite fibers based on several polymer matrices such as polyamide‐6 (PA‐6),7–9 polybutylene terephtalate (PBT),10–12 polytrimethylene terephtalate (PTT),13–15 polyethylene terephtalate (PET),14, 16, 17–20 polylactide (PLA),21, 22 polyethylene (PE)23, 24 or polyimideamide (PIA) 25, 26…”

Improved dispersion of clay platelets in poly(butylene terephthalate) nanocomposite by ring‐opening polymerization of cyclic oligomers: Effect of the processing conditions and comparison with nanocomposites obtained by melt intercalation

“…Polymer nanocomposites comprised of a semicrystalline polymer matrix are particularly attractive due to the dramatic improvement in heat distortion temperature (HDT) and modulus provided by the nanoparticle reinforcement. Polymer/clay nanocomposites of most commodity semicrystalline thermoplastics such as nylon‐6,3, 4, 8 poly(ethylene terephthalate)9–14 (PET) and poly(butylene terephthalate)15–26 (PBT) have been studied in detail. Several articles and patents reports the preparation of nanocomposites of poly(alkylene terephthalate) 9–26.…”