【摘 要】
：
The interface and surface properties of nano-hydroxyapatite(n-HA) and poly(1,4-phenylene sulfide)-poly (2,4-phenylene sulfide acid)(PPS-PPSA) copolymer composit
【机 构】
：
Institute of Materials Science & Technology,Dept. of Biomaterials
论文部分内容阅读
The interface and surface properties of nano-hydroxyapatite(n-HA) and poly(1,4-phenylene sulfide)-poly (2,4-phenylene sulfide acid)(PPS-PPSA) copolymer composite were investigated. The results show that there are some strong interface combinations of calcium ion (Ca2+), carboxyl (-COO-) and phosphate radicle ion (PO3-4) between copolymer and n-HA in the composite. The presence of the 2,4-phenylene sulfide acid in copolymer can increase the affinity to n-HA, which causes the formation of chemical bindings between the PPS-PPSA copolymer and n-HA. XRD analysis and IR surface analysis indicate that n-HA is not encapsulated by copolymer but exposed on the surface of the composite, and has same structure and properties with the original n-HA. The presence of the interface chemical bindings between the PPS-PPSA copolymer and n-HA can increase the content of n-HA in composite but does not cause the decrease of the composite mechanical strength.
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