Evaluation of Morphological Effect on Thermal and Mechanical Performance of PS/PMMA/CdS Nanocomposite Systems

Mathur, Vishal; Sharma, Kananbala

doi:10.4236/anp.2013.23029

Cited by 11 publications

(5 citation statements)

References 26 publications

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“…The interaction between polymer blend molecules and PANI significantly alters the tensile properties of PS/ PMMA blend matrix. 12,13 The tensile strength of PS, PMMA, and their blends were measured and plotted in Figure 1. It is obvious that the values of tensile strength of the blends are less than each polymer alone.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Studies the behaviors of polyaniline on the properties of PS/PMMA blends

Saleh

Khalaf

Ward

2015

Proceedings of the Institution of Mechanical Engineers, Part L:

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The effect of dispersion of polyaniline on the mechanical, morphology, electrical, and thermal properties of the PS/PMMA blends prepared by solution casting fabrication process was investigated. PS/PMMA (50/50) wt% blend with 3% pluronic and 1% polyaniline gave the best tensile strength in comparison with other blends. So, different concentrations from polyaniline (1, 3, 5, 10, 15, and 20 wt%) were evaluated to obtain the suitable effective concentrations that can be used. The morphology suggests that 3% pluronic and 1% polyaniline can act as mechanical compatibilizer between PS and PMMA as well as a thermodynamic compatibilizer. The thermal stability of the PS/PMMA (50/50 wt%) blend with different concentrations of polyaniline in the presence of 3% pluronic was studied using thermogravimetric analysis, which showed an increase in thermal stability due to the presence of polyaniline. The dielectric investigations reflected an increase in both the permittivity and dielectric loss with increasing the content of polyaniline (PANI), due to interfacial polarization and conductivity effects. In addition the increase in the conductivity of the composites is related to the increase of the conductive paths among the filler. The pathway of conductive filler was easy to form lower percolation threshold of the composite due to better dispersion of PANI. However, composites with low percolation threshold will be favorites for the practical applications with regard to the less deteriorated mechanical properties and processability.

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Section: Mechanical Propertiesmentioning

confidence: 99%

Studies the behaviors of polyaniline on the properties of PS/PMMA blends

Saleh

Khalaf

Ward

2015

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…Changes in the T g as a function of the filler content have been reported [ 17 ] for polymer composites containing a wide variety of fillers and polymers. The T g evaluated in CCF design performed in this study, showed the influence of nanoparticle content and GTA concentration ( Figure 3 b).…”

Section: Discussionmentioning

confidence: 99%

“…Further enhancement in the properties of biomaterials for bone tissue engineering can be achieved by including nanoscale particles in the polymeric scaffolds [ 11 , 12 , 13 , 14 , 15 ]. It has been shown that the interaction between nanosized particles and organic polymeric materials may result in improved mechanical and biological properties of the scaffold [ 13 , 16 , 17 ]. As the main mineral component of bone extracellular matrix (ECM), hydroxyapatite (HA) has been used to increase biocompatibility, osteoconductivity, and osteoinductivity in different scaffolds [ 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Development of Useful Biomaterial for Bone Tissue Engineering by Incorporating Nano-Copper-Zinc Alloy (nCuZn) in Chitosan/Gelatin/Nano-Hydroxyapatite (Ch/G/nHAp) Scaffold

et al. 2017

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Ceramic and metallic nanoparticles can improve the mechanical and biological properties of polymeric scaffolds for bone tissue engineering (BTE). In this work, nanohydroxyapatite (nHAp) and nano-copper-zinc alloy (nCuZn) were added to a chitosan/gelatin (Ch/G) scaffold in order to investigate the effects on morphological, physical, and biocompatibility properties. Scaffolds were fabricated by a freeze-drying technique using different pre-freezing temperatures. Microstructure and morphology were studied by scanning electron microscopy (SEM), glass transition (Tg) was studied using differential scanning calorimetry (DSC), cell growth was estimated by MTT assay, and biocompatibility was examined in vitro and in vivo by histochemistry analyses. Scaffolds and nanocomposite scaffolds presented interconnected pores, high porosity, and pore size appropriate for BTE. Tg of Ch/G scaffolds was diminished by nanoparticle inclusion. Mouse embryonic fibroblasts (MEFs) cells loaded in the Ch/G/nHAp/nCuZn nanocomposite scaffold showed suitable behavior, based on cell adhesion, cell growth, alkaline phosphatase (ALP) activity as a marker of osteogenic differentiation, and histological in vitro cross sections. In vivo subcutaneous implant showed granulation tissue formation and new tissue infiltration into the scaffold. The favorable microstructure, coupled with the ability to integrate nanoparticles into the scaffold by freeze-drying technique and the biocompatibility, indicates the potential of this new material for applications in BTE.

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“…The literature reports increases in T g with increasing filler content for micron-sized fillers, [37][38][39] but also decreases in T g for instance for nanocomposites. 40,41 In general, it appears that the effect of the filler and its content on T g strongly depends on the interface between filler and matrix. In our composites, we believe to have good interfacial interaction between epoxy and PPPI due to their direct contact and absence of voids deduced from SEM images, and for their -to some degree -covalent linking via amide bonds.…”

Section: Thermomechanical Propertiesmentioning

confidence: 99%