title: Synthesis and characterization of nano-hydroxyapatite/polyamide 66 biocomposites reinforced with multi-walled carbon nanotubes.
abstract: In this work, we investigate the enhanced mechanical properties of nano-hydroxyapatite/polyamide 66 (nHA/PA66) composites reinforced with multi-walled carbon nanotubes (MWCNTs) by means of the blending method. The MWCNTs-nHA/PA66 composites were characterized by various techniques, and the obtained results indicated that the MWCNTs were evenly distributed in the composite and that good interfacial bonding was formed between MWCNTs and PA66. The addition of MWCNTs improved the crystallinity of PA66, while it had little or no effect either on the composition or on the crystal structure of the composites. Moreover, the addition of MWCNTs in nHA/PA66 significantly improved the mechanical strength, and the tensile and compressive strengths attained maximum values of 90.3 and 126.8 MPa, respectively, with the addition of 0.1 wt% MWCNTs, whereas the bending strength attained a maximum value of 105.5 MPa with the addition of 0.05 wt% MWCNTs. Finally, L929 cells co-cultured with the MWCNTs-nHA/PA66 composite exhibited comparatively uninhibited cell growth, indicating that the addition of MWCNTs had negligible effect on the cytocompatibility of the original nHA/PA66 composite.
authors.affiliation: a School of Materials Science and Engineering , Henan Polytechnic University , Jiaozuo , China.
authors.forename: Jianguo
authors.initials: J
authors.lastname: Liao
authors.affiliation: a School of Materials Science and Engineering , Henan Polytechnic University , Jiaozuo , China.
authors.forename: Yongxiang
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: a School of Materials Science and Engineering , Henan Polytechnic University , Jiaozuo , China.
authors.forename: Xiali
authors.initials: X
authors.lastname: Guan
authors.affiliation: a School of Materials Science and Engineering , Henan Polytechnic University , Jiaozuo , China.|b Faculty of Medicine, Basic Medicine , Beihua University , Jilin , China.
authors.forename: Jingxian
authors.initials: J
authors.lastname: Liu
authors.affiliation: c Department of Nanofusion Technology, College of Nanoscience and Nanotechnology , Pusan National University , Busan , Republic of Korea.
authors.forename: Nian
authors.initials: N
authors.lastname: Shan
authors.affiliation: a School of Materials Science and Engineering , Henan Polytechnic University , Jiaozuo , China.
authors.forename: Yanqun
authors.initials: Y
authors.lastname: Li
authors.affiliation: a School of Materials Science and Engineering , Henan Polytechnic University , Jiaozuo , China.
authors.forename: Yufen
authors.initials: Y
authors.lastname: Xie
authors.affiliation: d School of Chemistry and Chemical Engineering, Analytical and Testing Center , Guangzhou University , Guangzhou , China.
authors.forename: Haohuai
authors.initials: H
authors.lastname: Liu
mesh_terms: D000818:Animals; D001672:Biocompatible Materials / Q000138:chemical synthesis* / Q000737:chemistry* / Q000633:toxicity; D002460:Cell Line; D060326:Chemistry Techniques, Synthetic; D017886:Durapatite / Q000737:chemistry*; D008422:Materials Testing; D051379:Mice; D053761:Nanocomposites / Q000737:chemistry* / Q000633:toxicity; D037742:Nanotubes, Carbon / Q000737:chemistry*; D009757:Nylons / Q000737:chemistry*
chemical_list: D001672:Biocompatible Materials; D037742:Nanotubes, Carbon; D009757:Nylons; D017886:Durapatite
keywords: Carbon nanotube; biocomposite; mechanical properties; nano-hydroxyapatite; polyamide 66