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| Analysis of Stearic Acid Modified β-TCP and Its PLLA Composite Nanofiber Membranes Properties |
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| DOI： |
| KeyWord:β-tricalcium phosphate surface modification morphology surface perssad mechanical properties |
| Author | Institution |
| CHEN Sai,MA Feng-cang*,GENG Fang,LIU Ping,LIU Xin-kuan,LI Wei |
1.上海理工大学机械工程学院;2.上海理工大学材料科学与工程学院;3.微创骨科有限责任公司 |
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| Abstract: |
| β-tricalcium phosphate(β-TCP) was modified by using stearic acid,and the mechanism of interfacial interactions between β-TCP particles and stearic acid was studied by transmission electron microscopy(TEM),thermal gravimetric analyzer(TGA) and X-ray photoelectron spectroscopy(XPS).The β-TCP/PLLA and modified β-TCP/PLLA composite nanofiber membranes of different quality ratios were prepared by electrospinning.Their morphologies were observed by using scanning electron microscope(SEM) and their mechanical properties were also studied.The results indicated that the stearic acid was coated on the surface of β-TCP particles,and modified β-TCP was hydrophobic.H+ of stearic acid could produce protonation reaction with O of PO3-4 from β-TCP and then generate —OH.The modification of β-TCP particles by stearic acid could reduce their agglomeration and obtain the continuous and uniform nanofibers.The mechanical properties of the modified β-TCP/PLLA composite nanofiber membranes were improved more significantly than that of β-TCP/PLLA. |
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