LAYER-BY-LAYER SELF-ASSEMBLY APPROACH IN THE UV PROTECTIVE MODIFICATION OF ARAMID-BASED MATERIALS

Year 2023, Volume: 30 Issue: 132, 318 - 326, 31.12.2023

Yeşim Ünvar Merih Sarıışık Şule Sultan Uğur

https://doi.org/10.7216/teksmuh.1406058

Abstract

This paper presents the Layer by Layer self-assembly (LbL) approach for developing the UV resistance of aramid yarns. Initially, a pretreatment was achieved by polyethyleneimine to obtain cationic surface charges on aramid yarns. Then zinc oxide and titanium dioxide nanoparticles were self-assembled on these yarns by the LbL process. The findings revealed that the LbL nano coatings significantly improved the UV resistance and tensile properties of the aramid yarns. This study highlights the unique opportunities offered by the LbL methodology to both modify aramid-based materials in mild conditions and provide an effective UV protection.

Keywords

Aramid, UV resistance, Layer by Layer self-assembly, nanocoating

Thanks

Yeşim Ünvar is supported by the Turkish Council of Higher Education 100/2000 doctoral scholarship.

References

• 1. Zhu, X., Yuan, L., Liang, G., & Gu, A., (2014), Unique UV-resistant and surface active aramid fibers with simultaneously enhanced mechanical and thermal properties by chemically coating Ce 0.8 Ca 0.2 O 1.8 having low photocatalytic activity, Journal of Materials Chemistry A, 2(29), 11286-11298.
• 2. Zhang, H., Liang, G., Gu, A., & Yuan, L., (2014), Facile preparation of hyperbranched polysiloxane-grafted aramid fibers with simultaneously improved UV resistance, surface activity, and thermal and mechanical properties, Industrial & Engineering Chemistry Research, 53(7), 2684-2696.
• 3. Zhu, X., Yuan, L., Liang, G., & Gu, A., (2015), Unique surface modified aramid fibers with improved flame retardancy, tensile properties, surface activity and UV-resistance through in situ formation of hyperbranched polysiloxane–Ce 0.8 Ca 0.2 O 1.8 hybrids, Journal of Materials Chemistry A, 3(23), 12515-12529.
• 4. Zhou, L., Yuan, L., Guan, Q., Gu, A., & Liang, G., (2017), Building unique surface structure on aramid fibers through a green layer-by-layer self-assembly technique to develop new high performance fibers with greatly improved surface activity, thermal resistance, mechanical properties and UV resistance, Applied Surface Science, 411, 34-45.
• 5. Zhu, J., Yuan, L., Guan, Q., Liang, G., & Gu, A., (2017), A novel strategy of fabricating high performance UV-resistant aramid fibers with simultaneously improved surface activity, thermal and mechanical properties through building polydopamine and graphene oxide bi-layer coatings, Chemical Engineering Journal, 310, 134-147.
• All references were included to the article file.