Chinese Journal of Tissue Engineering Research ›› 2019, Vol. 23 ›› Issue (18): 2880-2887.doi: 10.3969/j.issn.2095-4344.1711
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Received:
2019-01-14
Online:
2019-06-28
Published:
2019-06-28
Contact:
Yin Miao, MD, Attending physician, Center of Stomatology, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei Province, China
About author:
Zhao Delu, Master candidate, Center of Stomatology, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei Province, China
Supported by:
the National Natural Science Foundation of China (Youth Program), No. 81500899 (to YM)
CLC Number:
Zhao Delu, Tie Chaorong, Wang Xin, Zhu Huaian, Yang Sisi, Li Xiaobao, Yin Miao. Effects of adding strontium ions into photocrosslinked alginate hydrogels on its mechanical and biological properties[J]. Chinese Journal of Tissue Engineering Research, 2019, 23(18): 2880-2887.
2.2 水凝胶扫描电镜和能谱仪检测结果 扫描电镜观察结果如图3所示,材料均表现为疏松多孔状,其中Sr-0组、Sr-10组和Sr-30组结构较疏松,孔隙大,孔径多在100 μm以上;随着锶离子浓度的升高,水凝胶的致密程度增加,孔径减小,在Sr-100组中显得致密一些,孔径明显小于 100 μm。 能谱仪测试结果见图4和表2,经氯化锶浸泡后,在Sr-10、Sr-30、Sr-50、Sr-80和Sr-100组样本表面均可检测到锶元素,随着锶离子引入量的增加,水凝胶表面锶离子的X射线能谱图峰也在不断增高,其含量随着锶离子引入量的增加而递增;此外,随着锶离子的引入,样本中钠元素的含量呈递减趋势,钠离子逐渐减少。钠离子的减少和锶离子的增加,提示锶离子替代了羧基上的钠离子。"
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