Hydrogen bonding interaction of poly(D,L-lactide)/hydroxyapatite nanocomposites
Hydrogen bonding interaction of poly(D,L-lactide)/hydroxyapatite nanocomposites
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DOI：
10.1021/cm0619398
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发表时间：
2007
影响因子：
8.6
通讯作者：
Shaobing Zhou;Xiaotong Zheng;Xiongjun Yu;Jianxin Wang;J. Weng;Xiaohong Li;B. Feng;M. Yin
中科院分区：
文献类型：
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作者：
Shaobing Zhou;Xiaotong Zheng;Xiongjun Yu;Jianxin Wang;J. Weng;Xiaohong Li;B. Feng;M. Yin
聚乳酸（PDLLA）与羟基磷灰石（HA）纳米粒子在医学领域的应用日益广泛，对其键合机理的研究十分必要。本文首先采用扫描电镜（SEM）、差示扫描量热法（DSC）、傅里叶变换红外光谱（FTIR）和X射线光电子能谱（XPS）研究了PDLLA/HA纳米复合材料中PDLLA与HA之间的氢键作用。纳米复合材料的结构形态和玻璃化转变温度（Tg）表明，聚合物基体和无机纳米粒子之间有密切的相互作用。FTIR和XPS分析结果表明，PDLLA中的CO与HA纳米晶表面的POH基团之间确实形成了氢键。复合材料的形状记忆性能得到了改善，进一步说明了复合材料中氢键的存在。因此，我们设计了一个示意性的氢键模型的实验结果的基础上。很明显，它可以…
It was necessary to study the bonding mechanism of poly(d,l-lactide) (PDLLA) and hydroxyapatite (HA) nanoparticles because of their increasing application in medical fields. In this paper, hydrogen bonding between PDLLA and HA in PDLLA/HA nanocomposites was first investigated by scanning electron microscopy (SEM), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). Structural morphology and glass transition temperature (Tg) of the nanocomposites showed that there was a close interaction between polymer matrix and inorganic nanoparticls. The results from FTIR and XPS indicated that the hydrogen bonding between the CO in PDLLA and the surface POH groups of HA nanocrystalline was formed indeed. Shape memory properties were improved, which further implied the existence of hydrogen bonding in these nanocomposites. Thus, we designed a schematic model of the hydrogen bonding on the base of the experimental results. It can clearly ex...