Effect of organoclay on the thermal stability, mechanical strength, and surface wettability of injection‐molded ABS–clay nanocomposite materials prepared by melt intercalation

Abstract

ABSTRACT:In this article, a series of polymer-clay nanocomposite (PCN) materials consisted of commercial thermoplastic ABS matrix and dispersing inorganic organoclay platelets were successfully prepared by melt intercalation through the twin-roller mixer. The as-prepared materials in the form of pellet were then shaped by injection-molding machine and the as-molded specimens were subsequently examined by chemical characterizations, through Fourier transformation infrared (FTIR) spectroscopy, powder X-ray diffraction (XRD), and transmission electron microscopy (TEM). Effect of the organoclay on thermal stability, mechanical strength, and surface wettability of PCN materials, in both the form of standard dumbbell shape and pellet, was studied using thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), tensile test, hardness test, and contact-angle measurements, respectively.

Polystyrene/calcium phosphate nanocomposites: Contact angle studies based on water and methylene iodide

“…They obtained qualitative and quantitative indications about the degree of the water and oil repellency and of the surface free energy of the grafted surface. Yeh et al studied the contact angle behaviour of the Acrylonitrile butadiene styrene (ABS) clay nanocomposites very recently [16]. Contact angle of water on the ABS-clay nanocomposite materials increased with respect to the increase in clay content.…”

Role of interface in dispersion and surface energetics of polymer nanocomposites containing hydrophilic POSS and layered silicates

“…They proposed that this effect may be due to surface enrichment and molecular assembly of nanostructures bearing low surface energy alkyl groups. Yeh et al [28] also reported higher surface hydrophobicity of organoclay filled acrylonitrile-butadiene-styrene nanocomposites. Deng et al [29] and Song et al [30] showed enhanced hydrophobicity and lower surface energy of organo-MMT modified polyurethane nanocomposites.…”

Composites of Engineering Plastics with Layered Silicate Nanofillers: Preparation and Study of Microstructure and Thermomechanical Properties

“…However, for some clays, increased MMT content resulted in a slight increase of yield strength. Yeh et al, 2006 found that the incorporation of organoclay platelets into polymer matrix increased the tensile strength of ABS for concentrations up to 3 wt %. Further amounts of organoclay loading (e.g.…”

“…Finally, the char residue increases to about 0.7%, which is obviously a result of the incorporation of the inorganic clay that remains as residue and contributes to the final weight (Table 3). It should be noted that, TGA studies of Yeh et al, 2006 made with ABS nanocomposites in air, have also shown an enhancement of thermal stability as well as an increase of the remaining residue. Similarly, Patiño-Soto et al, 2007 observed that dispersed clay enhances the thermal stability of ABS, since the intercalated or exfoliated clays display barrier properties against the diffusion of atmospheric oxygen into the material, inhibiting oxidative attack of the system.…”

“…Enhancement of improvement of the thermal stability and mechanical strength was observed by Yeh et al 2006, by testing samples of a series of injection molded ABS/organoclay nanocomposites at low clay loading. In addition, they observed that incorporation of organoclay platelets into ABS matrix resulted in an increase of T g , associated with the confinement of the intercalated polymer chains within the organoclay galleries that prevent the segmental motions of polymer chains.…”