Recent Patents on Nanotechnology - Volume 6, Issue 3, 2012

Layered double hydroxides, a rare family of anion-exchangeable functional materials with broad application prospects, have received much attention both in academic research reports and technological patents. It was recently discovered that they could be exfoliated into unilamellar nanosheets in different solvents. Especially, well-defined LDH nanosheets can be obtained through total delamination, in formamide, of l Read More

Layered double hydroxides (LDHs) can be incorporated in a variety of composites with different structures and properties. The choice of synthesis method is a very important factor in achieving LDHs with the desired structure and properties. A method involving separate nucleation and aging steps (SNAS), layer-by-layer self-assembly methods, in situ surface synthesis methods and a clean method have been developed in rece Read More

From an exhaustive overview based on applicative academic literature and patent domain, the relevance of Layered Double Hydroxide (LDHs) as electrode materials for electrochemical detection of organic molecules having environmental or health impact and energy storage is evaluated. Specifically the focus is driven on their application as supercapacitor, alkaline or lithium battery and (bio)-sensor. Inherent to the high ve Read More

Layered double hydroxides (LDHs) have attracted a great deal of attention owing to their structural anisotropy, anion-exchange capability and compositional flexibility and have been widely investigated as catalysts, adsorbents, anionexchangers, polymer additives, optical materials, and so on. The intercalation of chromophores into the interlayer galleries of LDHs has drawn considerable interest since it can result in a kind o Read More

This review outlines research and patents relating to the use of inorganic nanomaterial, layered double hydroxide, as nanocontainers for drug delivery and gene reservoirs. Various intercalative synthetic routes including coprecipitation, ion exchange, reconstruction and exfoliation-reassembly have been explored to incorporate drug or gene molecules. Its unique two-dimensional structure allows layered double hydr Read More

This review treats the recent patents and related literature, mainly from the Authors laboratories, on biomedical and food packaging applications of nano-composites constituted of biodegradable polymers filled with micro or nano crystals of organically modified Layered Double Hydroxides of Hydrotalcite type. After a brief outline of the chemical and structural aspects of Hydrotalcite-like compounds (HTlc) and of their manipul Read More

Layered double hydroxides (LDH) has wide applications as non-toxic and halogen-free flame retardant for various resins and highly efficient thermal stabilizer for halogen-containing polymers. This review will discuss some public patents and relevant papers on the flame retardancy and the thermal stability of LDH/polymer composites when the LDHs with different chemical compositions are used as the additive in the pol Read More

The present article presents a review devoted to Layered Double Hydroxide (LDH) as filler in coatings from the patent domain and the applicative literature. Other than bulk properties generally encountered in polymer nanocomposite aspect, LDHs filler relevance for coatings concerns surface properties as well as requiring diffusion barrier into limited width by isolating or healing substrate from aggressive medium. Enhanceme Read More