OICC Press Progress in Biomaterials 2194-0517 8 2 (June 2019) 2019 05 24 Manipulation of the degradation behavior of calcium sulfate by the addition of bioglass 10.1007/s40204-019-0116-7 EN Pei-Yi Hsu Department of Materials Science and Engineering, National Taiwan University, Taipei, 107, TW Hsiao-Chun Kuo Department of Materials Science and Engineering, National Taiwan University, Taipei, 107, TW Wei-Hsing Tuan Department of Materials Science and Engineering, National Taiwan University, Taipei, 107, TW Shao-Ju Shih Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, 107, TW Makio Naito Joining and Welding Research Institute, Osaka University, Ibaraki, Osaka, 567-0047, JP Po-Liang Lai Department of Orthopedic Surgery, Bone and Joint Research Center, Chang Gung Memorial Hospital at Linkou, College of Medicine, Chang Gung University, Taoyuan, 333, TW Journal Article 2019 05 24 Abstract A bioactive calcium sulfate/glass composite was prepared using a sintering technique, and Ca–P–Si glass particles were prepared by spray pyrolysis. The glass exhibited bioactivity in terms of its ability to form apatite in a simulated body fluid. The glass was transformed into two crystallized phases, i.e., calcium phosphate and calcium silicate, respectively, during the heating stage. The presence of the crystallized phases retarded the densification of calcium sulfate. A high sintering temperature of 1200 °C was needed to prepare the composite. The increased addition of glass enhanced the strength and decreases the degradation rate of calcium sulfate. The new composite is not only degradable but also bioactive.