Polyethyleneimine incorporated hydroxyapatite for improved colloidal stability

IF 1.7 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2024-06-28 DOI:10.1002/bkcs.12855

Hyebin Choi, Jaun An, Keunyoung Lee, Ki-Young Kwon

引用次数: 0

Abstract

We report on the preparation of a polyethyleneimine-incorporated hydroxyapatite (PEI-HAP) and its enhanced colloidal stability. Three PEI-HAPs having different amine contents are synthesized by hydrothermal treatment (200 °C) of the HAP prepared at room temperature (rt-HAP). The crystallinity of PEI-HAP is improved compared to rt-HAP due to the heat treatment. In addition, the size of PEI-HAP (50.4 nm) increased compared to rt-HAP (32.1 nm) after heat treatment. However, the presence (or concentration) of PEI has little effect on the crystallinity and size of the samples. Ninhydrin test indicates the presence of amine group in PEI-HAPs. XPS experiments verified that maximum amine content amounts to 2.81%. As the amount of amine increases, the zeta potential is changed from −22.6 to +31.7 mV due to the adsorption of PEI on HAP surface. Consequently, the sample having high positive valuable zeta potential of +31.7 mV exhibits colloidal stability of more than 6 h.

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加入聚乙烯亚胺的羟基磷灰石可提高胶体稳定性

我们报告了聚乙烯亚胺包合羟基磷灰石（PEI-HAP）的制备及其增强的胶体稳定性。通过对室温下制备的羟基磷灰石（rt-HAP）进行水热处理（200 °C），合成了三种具有不同胺含量的 PEI-HAP。由于经过热处理，PEI-HAP 的结晶度比 rt-HAP 有所提高。此外，热处理后 PEI-HAP 的尺寸（50.4 nm）比 rt-HAP 的尺寸（32.1 nm）增大。不过，PEI 的存在（或浓度）对样品的结晶度和尺寸影响不大。茚三酮测试表明 PEI-HAP 中存在胺基。XPS 实验证实，胺的最大含量为 2.81%。随着胺含量的增加，由于 PEI 在 HAP 表面的吸附作用，zeta 电位从 -22.6 mV 变为 +31.7 mV。因此，具有 +31.7 mV 高正值 zeta 电位的样品具有超过 6 小时的胶体稳定性。

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来源期刊

Bulletin of the Korean Chemical Society Chemistry-General Chemistry

自引率

23.50%

发文量

182

期刊介绍： The Bulletin of the Korean Chemical Society is an official research journal of the Korean Chemical Society. It was founded in 1980 and reaches out to the chemical community worldwide. It is strictly peer-reviewed and welcomes Accounts, Communications, Articles, and Notes written in English. The scope of the journal covers all major areas of chemistry: analytical chemistry, electrochemistry, industrial chemistry, inorganic chemistry, life-science chemistry, macromolecular chemistry, organic synthesis, non-synthetic organic chemistry, physical chemistry, and materials chemistry.