Turning biopolymer particles into hybrid capsules: the example of silica/alginate nanocomposites

Rheological behavior of thermoreversible κ-carrageenan/nanosilica gels

“…Also, following the sequence of recent studies of the role of biomolecules on silica polymerization taking place in several micro-organisms, biomimetic approaches to silica based hybrid materials have been carried out [4,5]. A wide variety of biopolymers, including gelatin, alginates, cellulose derivatives [1][2][3][6][7][8] and carrageenans [9,10] have been employed to produce biopolymer/silica nanocomposites. Carrageenans are water soluble and obtained from several species of marine red algae.…”

Nanocomposites of Carbonated Hydroxyapatite/Poly (4-vinyl pyridine-co-styrene): Synthesis, Characterization and its Application

“…Especially in the first case, a lack of resorption rate has been reported [7] that can be ascribed to a low solubility of these materials under physiological conditions of osteoclastic bone resorption (i.e. at a pH between 4 and 5) [11][12][13]. In contrast, bone mineral consists of nano crystals that have a higher solubility due to thermodynamic reasons [14].…”

Synthesis and characterization of poly(4-vinyl pyridine-co-styrene)/FHAP nanocomposite, and its biomedical application

“…However, the biodegradation of HAp under physiological conditions makes the interface between HAp and bone unstable (Bertinetti et al 2007). Fluoridated hydroxyapatite (FHAp), where F -partially replaces the OH -in the hydroxyapatite, is considered as an alternative material for bone repair due to its low solubility and good biocompatibility (Boissiere et al 2006;Bose and Saha 2003;Chen et al 2004). Many researchers have also demonstrated that fluoride ions in the culture medium stimulated osteoblastic activities in terms of cell proliferation and differentiation (Chen et al 2007;Choi and Kumta 2006;Darder et al 2006;Degirmenbasi et al 2006).…”

“…The higher the level of fluoridation, the more fluoride ions released. As a result, besides its high thermal and chemical stability (Boissiere et al 2006;Gandhidasan et al 1991), FHAp is considered as a promising implant material due to its great biological potential (Huang et al 2007). However, high Fconcentration in bone can also lead to severe adverse effects such as osteomalacia (Joseph and Tanner 2005).…”