Pragnesh N. Dave

Synthesis and properties of epoxy resin-based acrylated poly (ester-amide)s/silane tailored organo-montmorillonite nanocomposites

Epoxy resin-based unsaturated poly(ester-amide) (UPEA) resins can be prepared by many methods, but in this study, these resins were prepared by the reported method and further acrylation was carried out using acryloyl chloride. Organo-montmorillonite was treated with 3-amino-propyltrimethoxysilane. Nanocomposites composed of UPEA matrix and organically modified clay filler were prepared by hand lay-up. The flexural property of the nanocomposites were determined, and it was found that adding only 3% w/w organically modified clay improved the flexural modulus of UPEA by 35%. Nanocomposites were characterized by x-ray diffraction, differential scanning calorimetry and scanning electron microscopy.

Nanomaterials: Environmental, Human Health Risk

Abstract Nowadays, many products that we use in daily life contain nanosize particles which are fabricated so as to give beneficial properties; such as sunscreen lotion, a lawn tennis racquet, medicines, electronic devices etc. However, since nanomaterial containing products are now easily available in consumer market, that can create serious concern over human health effects. Particles having size below 100 nanometers or less (i.e., nanomaterials) possess unique physical properties that can affect distribution, intake, and have different behaviors in the human body. Due to being smaller in size, nanomaterials can penetrate through cell walls, which can stimulate inflammatory and oxidative stress. In this chapter we discuss the impact of nanomaterials on the environment, the health of humans, and their safety.

Synthesis, properties, and applications of urethane-modified acrylated poly(ester-amide)s

Epoxy resin-based unsaturated poly(ester-amide) resins (UPEAs) were treated with acryloyl chloride to afford acrylated UPEAs resins (AUPEAs). Urethane-based acrylated poly(ester-amide)s prepared by reaction with diisocyanate were characterized by elemental analysis, by molecular weight determination (by vapour pressure osmometry), by IR spectral study, and by thermogravimetry. The curing of interacting blends was monitored by differential scanning calorimetry (DSC). On the basis of DSC data in-situ glass-reinforced composites were prepared from the resulting materials and their mechanical, electrical, and chemical properties were characterized. Unreinforced blends were characterized by thermogravimetry.