[1]袁秋华,石鑫,万磊,等.HA-PLA和Zn掺杂HA-PLA的界面结构及性能模拟[J].深圳大学学报理工版,2018,35(6):603-610.[doi:10.3724/SP.J.1249.2018.06603]
 YUAN Qiuhua,SHI Xin,WAN Lei,et al.Simulation of interfacial structures and mechanical properties of hydroxyapatite-polylactic acid and Zn-doped hydroxyapatite-polylactic acid[J].Journal of Shenzhen University Science and Engineering,2018,35(6):603-610.[doi:10.3724/SP.J.1249.2018.06603]
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HA-PLA和Zn掺杂HA-PLA的界面结构及性能模拟()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第35卷
期数:
2018年第6期
页码:
603-610
栏目:
【材料科学】
出版日期:
2018-11-16

文章信息/Info

Title:
Simulation of interfacial structures and mechanical properties of hydroxyapatite-polylactic acid and Zn-doped hydroxyapatite-polylactic acid
文章编号:
201806008
作者:
袁秋华1石鑫1万磊1林亚宁2徐安平1张自强1陈泽汇1邓立波1倪卓1
1) 深圳大学化学与环境工程学院,广东深圳 518060
2)中国电子科技集团公司第九研究所,四川绵阳621010
Author(s):
YUAN Qiuhua1 SHI Xin1 WAN Lei1 LIN Yaning2 XU Anping1 ZHANG Ziqiang1 CHEN Zehui1 DENG Libo1 and NI Zhuo1
1) College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China
2) The 9th Institute of China Electronics Technology Group Corporation, Mianyang 621010, Sichuan Province, P.R.China
关键词:
生物材料学羟基磷灰石聚乳酸分子动力学界面作用聚合物
Keywords:
biomaterial hydroxyapatite polylactic acid molecular dynamics interfacial interaction polymer
分类号:
TB 39
DOI:
10.3724/SP.J.1249.2018.06603
文献标志码:
A
摘要:
人工合成的锌掺杂羟基磷灰石(Zn-doped hydroxyapatite, ZnHA)具有良好的生物亲和性、生物相容性、生物活性和骨传导作用,可作为一种优良的硬组织替代材料,但因有断裂韧性低、脆性高和抗疲劳强度差等缺点,限制了其临床应用,因此通常在ZnHA中加入第二相或多相(聚合物,如聚乳酸(polylactic acid, PLA))以增强其力学性能.为分析HA-PLA界面间的相互作用,采用分子动力学法研究HA、缺陷HA和ZnHA的3个晶面(001)、(100)和(110)与PLA复合之后的体系,分析其力学性能.结果发现,Zn的掺入会使HA-PLA的弹性性能有所下降;与缺陷HA-PLA相比,Zn掺杂的HA-PLA仍具有较好的稳定性与弹性性能,且(110)晶面的弹性性能比其他两个晶面更好.
Abstract:
Synthetic Zn-doped hydroxyapatite (ZnHA) has good bio-affinity, biocompatibility, bioactivity and bone conduction, and it can be used as an excellent hard tissue substitute material. However, it has disadvantages of inherent low fracture toughness,high brittleness and poor fatigue strength, which limit its clinical applications. Therefore, the second phase or multiple phases such as polylactic acid (PLA) are usually added into ZnHA for enhancing its mechanical properties.In order to analyze the interfacial interactions of HA-PLA, molecular dynamics method is used to study the system of three crystal faces (001), (100) and (110) of HA, HA and ZnHA combined with PLA, respectively. The mechanical properties of the composites are also analyzed.It is found that the incorporation of Zn would reduce elastic performance of HA-PLA.However,compared with the defective HA-PLA,the Zn-doped HA-PLA still has better stability and elastic properties. Moreover, the elastic properties of (110) crystal plane are better than those of the other two crystal faces.

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备注/Memo

备注/Memo:
Received:2018-08-04;Accepted:2018-09-29
Foundation:National Nature Science Foundation of China (21471102); Shenzhen Science and Technology Basic Research Foundation (JCYJ20150525092941007)
Corresponding author:Associate professor YUAN Qiuhua.E-mail: yuanqiuh@szu.edu.cn;Engineer LIN Yaning. E-mail: linyaning7@163.com
Citation:YUAN Qiuhua,SHI Xin,WAN Lei,et al.Simulation of interfacial structures and mechanical properties of hydroxyapatite-polylactic acid and Zn-doped hydroxyapatite-polylactic acid[J]. Journal of Shenzhen University Science and Engineering, 2018, 35(6): 603-610.(in Chinese)
基金项目:国家自然科学基金资助项目(21471102);深圳市科技基础研究计划资助项目(JCYJ20150525092941007)
作者简介:袁秋华(1967—),男,深圳大学副教授、博士.研究方向:无机仿生材料.E-mail:yuanqiuh@szu.edu.cn
引文:袁秋华,石鑫,万磊,等.HA-PLA和Zn掺杂HA-PLA的界面结构及性能模拟[J]. 深圳大学学报理工版,2018,35(6):603-610.
更新日期/Last Update: 2018-11-30