Cellulose acetate/hydroxyapatite/chitosan coatings for improved corrosion resistance and bioactivity

Influence of chemically modified Luffa on the preparation of nanofiber and its biological evaluation for biomedical applications

“…During immersion, HAP from the MAT releases Ca 2+ ions and increasing the ionic activity in the fluid. When the ions released from mat the positive charge increased and interact with the PO 4 3− ions present in SBF solution. This migration between the solution and surface inducing precipitation called as apatite formation.…”

“…Single fibers of cellulose with nanometer in size are known as whiskers, Nanowhiskers, microfibril, or nanofibers . In recent years, natural nanofibers with reinforced composites are used in many applications due to its significant advantages such as strength and stiffness and biodegradability …”

“…2 In recent years, natural nanofibers with reinforced composites are used in many applications due to its significant advantages such as strength and stiffness and biodegradability. 3,4 The fiber extracted from the Luffa cylindrical belongs to Cucurbitaceae and is composed of 60% cellulose, 30% hemicellulose and 10% lignin 5 . The structure of Luffa sponges contains multimodal hierarchical pore system and hence has been used for the development of fiber-reinforced composites and scaffolds for tissue engineering.…”

Microwave-assisted rapid synthesis of lignocellulose/hydroxyapatite nanocomposites

“…Therefore, it is important to find the filler or substrate to improve the mechanical properties and biological properties of these material. Many natural substrates such as cellulose [7], chitosan [8], starch [9], and protein [10] were employed for the preparation of HA-based composites. However, as far as we know, the microwave-assisted rapid synthesis of HA particles in lignocellulose substrate has not been reported.…”

Nanoparticulate Platforms for Targeting Bone Infections: Meeting a Major Therapeutic Challenge

“…The 10% Sr-substituted HA show the maximum microbial reduction (≈ 56% for E. coli and 35% for S. aureus) [44] Strontium-cerium co-substituted hydroxyapaptite nanoparticles -Sr-Ce co-substituted HA nanoparticles presented the highest in vitro activity against E. coli and S. aureus, compared with nonsubstituted and Sr-substituted HA nanoparticles [45] Cobalt-doped hydroxyapatite nanoparticles -Higher in vitro activity against Shigella flexneri, Micrococcus luteus and S. aureus than nano-HA. No antibacterial activity against Pseudomonas aeruginosa [46] Hydroxyapatite nanoparticles coated with silver nanoparticles -Strong in vitro bactericidal effect against S. aureus, E. coli and Pneumococcus [47] [49]. In particular, the deposition of HA nanoparticles onto metallic surfaces has been showing promising results in terms of osteointegration due to the higher surface area of the particles.…”