Nanoclays for polymer nanocomposites, paints, inks, greases and cosmetics formulations, drug delivery vehicle and waste water treatment

Abstract

An overview of nanoclays or organically modified layered silicates (organoclays) is presented with emphasis placed on the use of nanoclays as the reinforcement phase in polymer matrices for preparation of polymer/layered silicates nanocomposites, rheological modifier for paints, inks and greases, drug delivery vehicle for controlled release of therapeutic agents, and nanoclays for industrial waste water as well as potable water treatment to make further step into green environment. A little amount of nanoclay can alter the entire properties of polymers, paints, inks and greases to a great extent by dispersing 1nm thick layered silicate throughout the matrices. The flexibility of interlayer spacing of layered silicates accommodates therapeutic agents which can later on be released to damaged cell. Because the release of drugs in drug-intercalated layered materials is controllable, these new materials have a great potential as a delivery host in the pharmaceutical field. The problem of clean water can be solved by treating industrial and municipal waste water with organoclays in combination with other sorbents like activated carbon and alum. Organoclays have proven to be superior to any other water treatment technology in applications where the water to be treated contains substantial amounts of oil and grease or humic acid.

Sulfonated poly(2,5-benzimidazole) (ABPBI)/ MMT/ ionic liquids composite membranes for high temperature PEM applications

“…Cloisite Na + , which is a Montmorillonite (MMT) sodium nanoclay ( Fig. 1), was used as a nano filler to reinforce ABPBI membrane, due to its high aspect ratio and low price [16] [17]. It was reported that sulfonated MMT was used to balance the ionic conductivity and mechanical properties of the composite membranes [18,19].…”

Effect of layered silicate nanoclay on the properties of silane crosslinked linear low-density polyethylene (LLDPE)

“…Also, the effect of aluminium hydroxide, antimony trioxide and EVA on the properties of silane crosslinked LDPE was investigated [10]. It has been reported that using layered silicates with large aspect ratios (a few nanometer thick but hundreds to thousands of nanometers long) in a polymer matrix improves mechanical properties [11][12][13], reduces thermal expansion coefficient [14], gas permeability [15] and flammability [16,17] of the polymer. These improvements can be achieved by using small amounts of nanofiller (≤5%) compared to ~40% for micro-fillers.…”

Interaction of Human Arylamine N-Acetyltransferase 1 with Different Nanomaterials

“…These nanomaterials are among the most widely used in industry and are under development as drug delivery systems and in polymer nanocomposites with industrial and biomedical applications (Patel et al, 2006;Pavlidou and Papaspyrides, 2008). Both nanoparticles are comprised of plates approximately 1-2 nm in thickness and 30-100 nm in diameter ( Fig.…”