title: In-situ dispersed photopolymerization of cyclic acetals/hydroxyapatite composites: effects of the content of hydroxyapatite.
abstract: In this work, hydroxyapatite (HA) was first dispersed into cyclic acetal unit based monomers (EHD), and then EHD/HA composites were obtained by in-situ photopolymerization. FTIR and XRD analyses were used to successfully confirm the chemical composition of this composite. Real-time FTIR revealed that there was no significant effect on the photopolymerization process until the HA content was up to 30%. Several samples of such a composite with different loading amounts of HA were prepared to study effects of HA concentrations on the EHD/HA composite in particular in terms of SEM, TG, DMA, water contact angel and in-vitro biocompatibility. The results appeared that the loading of HA could significantly improve the thermal stability, mechanical properties and in vitro biocompatibility of the EHD/HA composite compared with EHD networks.
authors.affiliation: Complex and Intelligent Research Center, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, PR China.
authors.forename: Ruixue
authors.initials: R
authors.lastname: Yin
authors.affiliation: School of Materials Science and Engineering, Changzhou University, Changzhou 213164, PR China.
authors.forename: Wentao
authors.initials: W
authors.lastname: Wu
authors.affiliation: School of Materials Science and Engineering, Changzhou University, Changzhou 213164, PR China. Electronic address: wangkm61@gmail.com.
authors.forename: Kemin
authors.initials: K
authors.lastname: Wang
authors.affiliation: Complex and Intelligent Research Center, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, PR China; Division of Biomedical Engineering, University of Saskatchewan, Canada.
authors.forename: Wen Jun
authors.initials: WJ
authors.lastname: Zhang
mesh_terms: D000080:Acetals / Q000737:chemistry*; D017886:Durapatite / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D010777:Photochemistry; D058105:Polymerization; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D000080:Acetals; D017886:Durapatite
keywords: Cyclic acetals; Hydroxyapatite; In-situ dispersed; Photopolymerization; Polymer/mineral composites