Low Frequency Dielectric and Optical Behavior on Physicochemical Properties of Hydroxyapatite/Cornstarch Composite

[Display omitted] An investigation on relationship among the physicochemical, optical and dielectric properties of the hydroxyapatite/cornstarch (HA/Cs) composites with the starch proportion of 30, 40, 50, 60, 70, 80 and 90 wt% is presented in this work. The HA/Cs composites have been characterized...

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Bibliographic Details
Published in:Journal of colloid and interface science 2021-10, Vol.600, p.187-198
Main Authors: Beh, C.Y., Cheng, E.M., Mohd Nasir, N.F., Khor, S.F., Eng, S.K., Abdul Majid, M.S., Ridzuan, M.J.M., Lee, K.Y.
Format: Article
Language:English
Subjects:
Composite
Crystallinity
Dielectric parameters
Optical properties
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Summary:[Display omitted] An investigation on relationship among the physicochemical, optical and dielectric properties of the hydroxyapatite/cornstarch (HA/Cs) composites with the starch proportion of 30, 40, 50, 60, 70, 80 and 90 wt% is presented in this work. The HA/Cs composites have been characterized via FTIR, XRD, DRS and impedance analyzer. This work depicts that the strong interaction is exhibited between the hydroxyapatite nanoparticles and starch as the starch proportion increases. This increment trend results in the higher crystallinity of the HA/Cs composites. The highly crystallized HA/Cs with hydroxyapatite nucleation center presents low optical properties (diffuse reflectance and optical band gap energy). The HA/Cs composite with 80 wt% starch proportion (H2C8) show higher dielectric properties (dielectric constant, loss factor and conductivity) due to the stronger interfacial interaction and close-packed HA/Cs crystalline structure. The relationship among the physicochemical, optical and dielectric properties of the HA/Cs composite is studied in this work for potential of instrumentation design.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2021.03.158