tailieunhanh - Biomimetics Learning from nature Part 8

Tham khảo tài liệu 'biomimetics learning from nature part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 208 Biomimetics Learning from Nature using a suitable processing method. No significant improvement in the mechanical properties was observed due to improvement in tablet orientation. Feng et al. Feng et al. 2000 synthesized alumina aramid fiber reinforced epoxy composites containing five alumina m thick lamnas and four aramid fiber reinforced epoxy strips mm thick alternatively. The synthesized composite exhibited a work of fracture that is 80 times of that of monolithic alumina. Tang et al. Tang et al. 2003 prepared a nanostructured composite with alternating organic and inorganic layers mimicking nacre by sequential deposition of polelectrolytes poly diallydimethylammonium chloride polycation and clays. The sawtooth pattern in the stretching curves revealed gradual breakage of ionic crosslinks in polyelectrolyte chains which is similar to the unfolding of protein domains in nacre. The tensile strength of these multilayered composites was comparable to that of nacre. Zhang et al. Zhang et al. 2004 synthesized silica poly methacryloxyethyl hexadecyldimethyl ammonium bromide nanocomposite thin films by supermolecular self-assembly method on glass substrate. It was confirmed that the nanocomposite films resemble the laminated structure in nacre. Zhang et al. Zhang et al. 2006 prepared poly tripropylene glycol diacrylate . poly-TPGDA indium-tin-oxide ITO nanocomposite films by dip-coating method where the self-assembly was induced by evaporation. Results indicated that the films have organic and inorganic layers with orderly arrangement. Gehrke et al. Gehrke et al. 2005 used a unique method to synthesize artificial nacre remineralization of the insoluble matrix of natural nacre. Prior to this nacre was demineralized and the soluble proteins were removed. Scanning electron microscope images of the fractured surface showed that the artificial nacre closely resembles the natural nacre. Bennadji-Gridi et al. Bennadji-Gridi et al. 2006 prepared nacre-like .