Abstract
There is a great demand for a dispersion evaluation method that can be applied even when a nano-sized filler is incorporated, that can evaluate a three-dimensional (3D) quantitative dispersion of a composite material, and that is not expensive and time consuming. Here, we proposed light-intensity dispersion index (LDI) to quantitatively evaluate the dispersion based on the light scattering distribution on divided optical microscopy (OM) images. Difference in the light-intensity is determined by the dispersion and agglomeration of the filler in the polymer matrix; therefore, the smaller the distribution and the number of peaks of light-intensity, the more uniform the dispersion. The reliability of the developed LDI was improved by introducing an agglomeration size weighting factor. Furthermore, the validity of the LDI was also verified in comparison with the experimental results. In conclusion, we have successfully developed a method for the 3D quantitative dispersion evaluation of nanocomposites with minimal cost and time consumption.
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Acknowledgement
This work was supported by a grant from the Fundamental R&D Program for Technology of World Premier Materials funded by the Ministry of Trade, Industry, and Energy, Republic of Korea. We acknowledge the financial support from a Korea Institute of Science and Technology internal project. This research was also supported by Basic Science Research Program (2017R1C1B5077037) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education and the Ministry of Trade, Industry & Energy (MOTIE, Korea) under Industrial Technology Innovation Program. No. (10082586).
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Park, M., Jang, Ju., Oh, J. et al. 3D Quantitative Light-intensity Dispersion Index of Polymer Nanocomposites Based on Optical Microscopy. Fibers Polym 22, 764–771 (2021). https://doi.org/10.1007/s12221-021-0351-0
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DOI: https://doi.org/10.1007/s12221-021-0351-0