Hydroxyapatite whisker / chitin whisker co-assembled liquid crystal as well as preparation method and application thereof

By treating chitin whiskers and hydroxyapatite whiskers with TEMPO oxidation or maleic anhydride, and utilizing electrostatic repulsion and spatial orientation entropy, stable hydroxyapatite whisker/chitin whisker co-assembled liquid crystals are prepared, which solves the problem of self-assembled liquid crystals being easily destroyed and achieves liquid crystal properties with high stability and biomimetic biological structure.

CN120699635APending Publication Date: 2025-09-26JINAN UNIVERSITY
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Patent Information

Application Number
CN202510619282.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-14
Publication Date
2025-09-26

AI Technical Summary

Technical Problem

It is difficult to prepare stable hydroxyapatite whiskers and chitin whiskers co-assembled liquid crystals with existing technology. The liquid crystal phase formed by the self-assembly of the two is easily destroyed by external environmental interference, making it difficult to mimic the organic/inorganic composite liquid crystal structure in organisms.

Method used

Chitosan whiskers and hydroxyapatite whiskers are treated with TEMPO oxidation or maleic anhydride treatment, and hydroxyapatite whiskers/chitosan whiskers co-assembled liquid crystals are prepared through electrostatic mutual repulsion and spatial orientation entropy, and whiskers with the same charge are used for co-assembly.

Benefits of technology

The stable co-assembly of hydroxyapatite whiskers and chitin whiskers was achieved, mimicking the chiral nematic liquid crystal phase in vivo. The co-assembled liquid crystal has high stability and good repeatability of the liquid crystal phenomenon without the use of surfactants or dispersants.

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Abstract

The invention belongs to the field of nano materials, and discloses a hydroxyapatite whisker / chitin whisker co-assembled liquid crystal as well as a preparation method and application thereof. The co-assembled liquid crystal is obtained by mixing hydroxyapatite whisker liquid crystal and chitin whisker liquid crystal which have the same electrical property, performing ultrasonic homogenization treatment and further stabilizing at room temperature. In a co-assembled liquid crystal system, the preparation and long-term stability of the co-assembled liquid crystal system are realized by two whiskers with the same electrical property based on a dual-drive principle of electrostatic repulsion and spatial orientation entropy; and the co-assembled liquid crystal simulates the liquid crystal phase and the ordered organic / inorganic phase composition in the living body in the nature in the organic / inorganic phase composition and the liquid crystal state. In addition, the adopted raw materials are wide in source and low in cost, the preparation process is simple, efficient and easy to implement, and no surfactant or dispersing agent is needed to stabilize the co-assembled liquid crystal system.
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