New polyurethane (PU) nanocomposites were prepared from a dispersion of 0 - 5% montmorillonite (MMT) clay with isocyanate and soya oil polyol that was synthesized via transesterification of triglycerides to reduce petroleum dependence. FT-IR spectra indicate the presence of hydrogen bonding between nanoclay and the polymer matrix, whereas the exfoliated structure of clay layers was confirmed by...

Polyamide 6 (PA6) was melt-blended with an intumescent flame retardant (FR), multi-wall carbon nanotubes (MWNTs), and nanoclay particles to produce multi-component FR-PA6 nanocomposites. FR-PA6 nanofibers were processed from varied nanocomposite formulations via electrospinning. Electrospinnability, morphology, along with combustion and thermal properties of the nanofibers were investigated. Bo...

In this study, a comparison between neat poly(vinylidene fluoride) (PVDF) membrane and composite (PVDF-Nanoclay and PVDF-PVP-Nanoclay) membranes is presented. All membranes were synthesized by the phase inversion process, using 18% PVDF, n-methylpyrrolidone as solvent and water as the non-solvent. Demineralized water cross-flow permeation tests were conducted to evaluate the membranes performan...

background: flexural strength of prosthesis made with dental composite resin materials plays an important role in their survival. the aim of this study was investigating the effect of nanoclay fillers and poly (methyl methacrylate)-grafted (pmma-grafted) nanoclay fillers loading on the flexural strength of fiber-reinforced composites (frcs). materials and methods: standard frc bars (2 × 2 × 25 ...

Due to their biodegradability, affordability, low density, and numerous other benefits, natural fiber polymer composites are preferable conventional GFRP in maritime applications. However, when exposed moisture, mechanical qualities deteriorate. A significant agricultural waste called pineapple leaf (PALF) can be employed as reinforcement epoxy matrices. Improved interfacial bonding between pha...

The current study’s objective is to investigate the impact of nanoclay on tensile and wear properties glass fiber-epoxy-nanoclay ternary nanocomposite. Three types composites are produced by hand lay-up process compression molding. Tensile tests executed according ASTM standards. findings disclosed that enhanced causes for failure under load revealed SEM micrographs. Response surface methodolog...

Bone tissue engineering implants with sustained local drug delivery provide an opportunity for better postoperative care for bone tumor patients because these implants offer sustained drug release at the tumor site and reduce systemic side effects. A rapid prototyped macroporous polycaprolactone scaffold was embedded with a porous matrix composed of chitosan, nanoclay, and β-tricalcium phosphat...

SUPERCRITICAL CARBON DIOXIDE-PROCESSED RESORBABLE POLYMERNANOCOMPOSITES FOR BONE GRAFT SUBSTITUTE APPLICATIONSbyKEVIN C. BAKERAugust 2011Advisor: Rangaramanujam M. Kannan, Ph.D.Major: Biomedical EngineeringDegree: Doctor of PhilosophyNumerous clinical situations necessitate the use of bone graft materials to enhance boneformation. While autologous and all...