title: Modification of hydroxyapatite/gelatin nanocomposite using polyacrylamide.
abstract: A hydroxyapatite (HAp)/gelatin (GEL) nanocomposite was mixed with mineralized polyacrylamide (PAM) to produce a macrocomposite. The mineralization of PAM was carried out by solution-precipitation using Ca(OH)(2) and H(3)PO(4). The crystal growth of HAp in PAM was moderately changed from amorphous-like nanocrystalline to crystalline with the increase of PAM. The dry body of HAp/PAM nanocomposite cracked after the immersion test in water, but the cross-linked sample using glutaraldehyde did not crack. The macrocomposite of HAp/GEL nanocomposite and HAp/PAM nanocomposite showed good toughness, but cracked after the immersion test in water. The cross-linked macrocomposite sample did not crack after the immersion test in water.
authors.affiliation: Department of Restorative Science (MDRCBB), School of Dentistry, University of Minnesota, 16-212 Moos Tower, 515 Delaware Street E., Minneapolis, MN 55455-0329, USA. chang083@umn.edu
authors.forename: Myung Chul
authors.initials: MC
authors.lastname: Chang
authors.forename: Uk-Kyu
authors.initials: UK
authors.lastname: Kim
authors.forename: William H
authors.initials: WH
authors.lastname: Douglas
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D001671:Biochemistry / Q000379:methods; D001672:Biocompatible Materials / Q000737:chemistry*; D002021:Buffers; D019245:Compressive Strength; D003460:Crystallization; D017886:Durapatite / Q000737:chemistry*; D005780:Gelatin / Q000737:chemistry*; D005976:Glutaral / Q000737:chemistry; D046911:Macromolecular Substances; D008422:Materials Testing; D053761:Nanocomposites / Q000737:chemistry*; D049329:Nanostructures; D011108:Polymers / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction; D000099166:Polyacrylamides
chemical_list: D000180:Acrylic Resins; D001672:Biocompatible Materials; D002021:Buffers; D017886:Durapatite; D005780:Gelatin; D005976:Glutaral; D046911:Macromolecular Substances; D011108:Polymers; D000099166:Polyacrylamides