Characterization of clay filled poly (butylene terephthalate) nanocomposites prepared by solution blending

Abstract

SbstractKaolin clay/poly (butylene terephthalate) (clay/PBT) composites films were prepared by solution casting technique. The scanning electron microscope (SEM) study showed that clay particles were well dispersed and embedded within the PBT matrix. The TGA thermograms showed that the thermal stability of PBT matrix was slightly improved by the incorporation of clay into the polymer matrix. The polarized optical microscopy (POM) study presented that the size of spherulites of PBT was decreased by the incorporation of clay into matrix, which might be due to nucleation effect of kaolin clay. The tensile strength and modulii of PBT polymer matrix were also significantly improved by the addition of clay polymer matrix. The solvent uptake study showed that the uptake of various solvents by clay/PBT nanocomposite were lower than neat PBT.

Composite membranes based on polyvinyl alcohol and lamellar solids for water decontamination

“…The preparation process can be described as a combination of three stages: (i) the dispersion of clay in a polymer solution, (ii) well-ordered solvent removal and (iii) composite film casting. [53][54][55] Generally, composite membranes based on host polymers and layered structured nanofillers may result in three possible morphologies, such as (i) phase separated, (ii) intercalated and (iii) exfoliated structures. 56 XRPD analysis was used to evaluate the morphology our samples.…”

Influence of Reinforcing Efficiency of Clay on the Mechanical Properties of Poly(butylene terephthalate) Nanocomposite

“…A number of semicrystalline polymer matrices, such as poly(butylene terephthalate) (PBT), when reinforced by clay, have demon-strated desirable characteristics for a variety of practical applications. Especially, their significant improvement in heat distortion temperature, impact strength, and modulus has gained industrial interest [20][21][22][23][24][25][26]. Because of its easy processability, good mechanical properties, excellent dimensional stability, high stiffness, and hardness, PBT has been a highly desirable engineering thermoplastic for injection molding.…”

“…Because of its easy processability, good mechanical properties, excellent dimensional stability, high stiffness, and hardness, PBT has been a highly desirable engineering thermoplastic for injection molding. PBT has been widely utilized in various applications, such as insulator in electrical and electronic industries [20][21][22][23][24][25][26]. Its superior thermal and mechanical properties, and excellent behavior in micromolding processes, 3D printing and additive manufacturing have increased the use of PBT for engineering materials.…”

“…Predominantly, PBT is used in the automotive industry for applications such as connectors and sensors. The combination of rigidity and solvent resistance of PBT has made it a major contributor to the personal computer connector industry [23][24][25][26][27][28][29][30].…”

“…Additionally, the incorporation of only a small amount of clay, into PBT can increase the low impact strength and heat distortion temperature, and reduce the brittleness and cost, widening the field of applicability of this polyester [24,25,30]. Positive characteristics in the end product of PBT-clay nanocomposites may include several aspects: chemical resistance, surface appearance, improved fire retardancy, electrical and thermal conductivity, and mechanical properties [23][24][25]. Chang et al, prepared Poly(butylene terephthalate (PBT))/clay nanocomposites by melt intercalation employing a twinscrew extruder [35].…”