The influence of different chemical treatments on the surface modification and biological behavior of PEEK
10.3969/j.issn.1001-3733.2019.01.007
- VernacularTitle:不同化学处理方法对PEEK材料表面改性及生物学行为的影响
- Author:
Yanhua LI
1
;
Dong HE
;
Jing WANG
;
Gaoyi WU
Author Information
1. 锦州医科大学济南军区总医院研究生培养基地
- Keywords:
Polyetheretherketone;
Chemical treatment;
Sulfonated;
Surface modification
- From:
Journal of Practical Stomatology
2019;35(1):32-36
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To improve the bioactivity of PEEK by chemical methods. Methods: PEEK samples were treated by polish only (group (1)) ; concentrated sulfuric acid for 5 min (group (2)) ; concentrated sulfuric acid for 10 min (group (3)) ; concentrated sulfuric acid for 5 min, followed by treatment of hydrogen nitrate for 5 min (group (4)) and mineral chameleon and ortho-phosphoric acid (group (5)) respectively (n = 9) . Then, all samples were treated by water at 100 ℃ for 4 h. The sample surface was observed by FE-SEM, the chemical comporent of the samples was analyzed by XPS. BMSCs were cultured on the sample surface for 4 h and observed by SEM. Results: The sample sureface in group (1) was smooth, in group (2), (3) and (4) was with 3 D ethmoidal foramen structure, in group (5) with petal-like from. The sulfur content (Wt％) of the samples of group (1), (2), (3), (4) and (5) was 0, 2. 45 ± 0. 22, 3. 48 ± 0. 16 (vs (1), P= 0. 000), 1. 79 ± 0. 05 (vs (1) P = 0. 002) and 0 respectively. BMSCs cultured on the sample surface of group (2), (3), (4) and (5) were more and with more pseudopod. Conclusion: The bioactivity of PEEK can be enhanced after acid pickling. Water bath and nitric acid treatment can remove the residual acid and further enhance the bioactivity of PEEK.
