title: Aragonite nanorods in calcium carbonate/polymer hybrids formed through self-organization processes from amorphous calcium carbonate solution.
abstract: Nanostructured inorganic/polymer hybrid thin films comprising aragonite nanorods derived from aqueous suspensions of amorphous calcium carbonate (ACC) are prepared. For the formation of calcium carbonate (CaCO₃)/polymer hybrids, spincoated and annealed films of poly(vinyl alcohol) (PVA) that function as polymer matrices are soaked in aqueous colloidal solutions dispersing ACC stabilized by poly(acrylic acid) (PAA). In the initial stage, calcite thin films form on the surface. Subsequently, aragonite crystals start to form inside the PVA matrix that contains PVA crystallites which induce aragonite nucleation. Nanostructured hybrids composed of calcite thin films consisting of nanoparticles and assembled aragonite nanorods are formed in the matrices of PVA.
authors.affiliation: Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kajiyama
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Nishimura
authors.forename: Takeshi
authors.initials: T
authors.lastname: Sakamoto
authors.forename: Takashi
authors.initials: T
authors.lastname: Kato
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D002119:Calcium Carbonate / Q000737:chemistry*; D003460:Crystallization; D008855:Microscopy, Electron, Scanning; D036103:Nanotechnology; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D011142:Polyvinyl Alcohol / Q000737:chemistry; D012996:Solutions
chemical_list: D000180:Acrylic Resins; D012996:Solutions; C006903:carbopol 940; D011142:Polyvinyl Alcohol; D002119:Calcium Carbonate
keywords: aragonite; biomineralization; hybrids; nanorods; self-organization