Controlling the Magnitude and Polarity of Surface Charges in PEBA Polymers By Adding UIO-66 MOFs
Materials Advances 2024
Linards Lapčinskis, Andris Šutka, Martynas Kinka, Fa-Kuen Shieh, Līva Ģērmane, Sergejus Balčiūnas, Artis Linarts, Robertas Grigalaitis

The polarity of the polymer surface charge is important for constructing triboelectric devices where asymmetric charging tendencies of contacting materials are required. In the present work, we show that the addition of UiO-66 and UiO-66-NH2 metal-organic framework (MOF) particles into a polyether block amide (PEBA) polymer increases the triboelectric surface charge density and allows controlling the charge polarity. The composites of the PEBA polymer with 0.1-5 wt% MOFs enhanced the surface charge density of pristine PEBA in the whole compositional range. The triboelectric properties can be tuned not only by the amount of MOF fillers but also by modification of UIO-66 1,4-benzenedicarboxylic acid linkers with additional -NH2 groups. PEBA/UiO-66-NH2 composites remain positively charged, while the PEBA/UiO-66 system undergoes a change of the triboelectric surface charging from positive to negative between 0.5 wt% and 1 wt%. This material shows more tendency for a negative charge than Teflon. © 2024 RSC.


DOI
10.1039/d3ma01172k
Hipersaite
https://pubs.rsc.org/en/content/articlelanding/2024/ma/d3ma01172k

Lapčinskis, L., Šutka, A., Kinka, M., Shieh, F., Ģērmane, L., Balčiūnas, S., Linarts, A., Grigalaitis, R. Controlling the Magnitude and Polarity of Surface Charges in PEBA Polymers By Adding UIO-66 MOFs. Materials Advances, 2024, Vol. 5, No. 10, 4242.-4250.lpp. ISSN 2633-5409. Pieejams: doi:10.1039/d3ma01172k

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