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arXiv · 2609.26613

Adsorption of the low density lipoproteins on the micropatterned polymer brush: computer simulations

J. Ilnytskyi·D. Yaremchuk·O. Komarytsia
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Abstract

Photorenewable polymer adsorbents, aimed at reducing the low density lipoproteins (LDLs) level, are reported experimentally. Previously we developed a mesoscale model for this setup with uniformly grafted chains, and examined the role played by chains length and grafting density [Ilnytskyi, et al., Processes, 2023, 11, 2913]. The analysis is extended here to the cases of bunch-like and grid-like grafting micropatterns. The bunch-like arrangement is the most efficient one displaying low- and high-density peaks for adsorbing effectiveness. The former peak is twice higher compared with uniform grafting, as a consequence of a match between LDLs dimensions and the micropattern pitch. Adsorption isotherms are fitted well by either Langmuir or logistic growth forms, indicating a higher growth rate compared with uniform grafting. The high-density peak exists only for this micropattern and extends the applicability of an adsorbent. At the highest LDL concentration, adsorption is hampered by self-assembly of LDLs into a packed cubic phase.

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J. Ilnytskyi, D. Yaremchuk, O. Komarytsia. 2026-09-22. Adsorption of the low density lipoproteins on the micropatterned polymer brush: computer simulations. https://arxiv.org/abs/2609.26613

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