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首页> 外文期刊>Journal of Materials Science >The study of tri-phasic interactions in nano-hydroxyapatite/konjac glucomannan/chitosan composite
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The study of tri-phasic interactions in nano-hydroxyapatite/konjac glucomannan/chitosan composite

机译：纳米羟基磷灰石/魔芋葡甘露聚糖/壳聚糖复合材料的三相相互作用研究

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摘要

The interactions among the three phases of nano-hydroxyapatite (n-HA), Konjac glucomannan (KGM) and Chitosan (CS) in n-HA/KGM/CS composite were investigated using TEM, IR, XRD, XPS and TGA methods. The crystalline structure of n-HA was studied by means of Rietveld method. A series of structure parameters, such as, cell lattice parameters (a or c), bonding lengths and a numerical index of distortion for PO4 tetrahedron, were calculated by Newton-Raphson calculating method to characterize the crystalline structure of HA at atom level. The results showed that n-HA was mainly linked with KGM and CS by hydrogen bonding between OH--PO43- of n-HA and -C=O, -NH of KGM-CS copolymer, and there was a stable interface formed between the three phases in the composite. Besides, orientation of this hydrogen bonding resulted in the decrease of the relative crystallization degree of KGM-CS copolymer.
机译：采用TEM，IR，XRD，XPS和TGA方法研究了n-HA / KGM / CS复合材料中纳米羟基磷灰石（n-HA），魔芋葡甘露聚糖（KGM）和壳聚糖（CS）这三个相之间的相互作用。通过Rietveld方法研究了n-HA的晶体结构。通过牛顿-拉夫森（Newton-Raphson）计算方法计算了一系列结构参数，例如，单元格参数（a或c），键合长度和PO4四面体的变形数值指数，以表征HA在原子级的晶体结构。结果表明，n-HA主要通过n-HA的OH-PO43-与KGM-CS共聚物的-C = O，-NH之间的氢键与KGM和CS连接，并且在KGM-CS之间形成稳定的界面。在复合中的三个阶段。此外，该氢键的取向导致KGM-CS共聚物的相对结晶度降低。

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