Article pubs.acs.org/journal/abseba
Processing and Properties of Bioactive Surface-Porous PEKK Bo Yuan,† Yangmei Chen,† Hai Lin,† Yueming Song,‡ Xi Yang,‡ Hai Tang,§ En Xie,∥ Tim Hsu,⊥ Xiao Yang,† Xiangdong Zhu,*,† Kai Zhang,*,† and Xingdong Zhang† †
National Engineering Research Center for Biomaterials, Sichuan University, Biomaterials Building, No. 29 Wangjiang Road, Chengdu, China 610064 ‡ Department of Orthopedic Surgery, West China Hospital, Sichuan University, No. 37 Guoxue Road, Chengdu, China 610041 § Department of Orthopedics, Beijing Friendship Hospital, Capital Medical University, No. 95 Yongan Road, Beijing, China 100050 ∥ Department of Spine Surgery, Hong-Hui Hospital, Xi’an Jiaotong University, College of Medicine, No. 555 Youyi East Road, Xi’an China 710054 ⊥ Polymics Ltd., 2215 High Tech Road, State College, Pennsylvania 16803, United States ABSTRACT: Bioactive surface-porous polyetherketoneketone materials (PEKK-BSP) were prepared by first leaching hydroxyapatite (HA) microsphere templates from compression molded PEKK/HA composites (i.e., PEKK-P) followed by sulfonation with 80% sulfuric acid for 3 h (i.e., PEKK-SP) and then soaking in a simulated body fluid (SBF) for 5 days. The combination of both physical and chemical processes created a surface-porous PEKK material (PEKKSP) that had both structurally interconnected and open macropores (200−600 μm) because of templating of HA microspheres, and micropores (
