Development of amino acid deep eutectic solvent (AADES) as a crosslinker for carboxylated nitrile butadiene rubber (XNBR)
NURFATHIAH IZZATY Mohd Faridz Hilmy, AIMAN HANIF Hanafi, WAN ZAIREEN NISA Yahya
Abstract. Carboxylated acrylonitrile butadiene rubber (XNBR) a high-performance synthetic nitrile rubber is gaining much demand due to enhance mechanical properties in many applications including rubber gloves. The common crosslinker for XNBR, namely sulfur and zinc oxide with presence of accelerator which pose risks of Type IV Allergic Contact Dermatitis (ACD) and environmental concerns. To overcome this problem, a new amino acid-based deep eutectic solvent (AADES) is proposed as a green and sustainable ionic crosslinking agent. The ionic crosslinking between AADES and XNBR demonstrates superior machanical and thermal properties, offering a viable alternative to conventional methods. Fourier Transform Infrared Spectroscopy (FTIR) and Nuclear Magnetic Resonance were used to identify key structures in both cured XNBR and AADES. Mechanical and thermal analyses were performed using Universal Tensile Test, Thermal Gravimetric Analysis, and Differential Scanning Calorimetry on cured XNBR and AADES samples. Notably, XNBR crosslinked with a 1:3 DES molar ratio showed the highest tensile strength of 4.84 MPa, while a 1:2 DES molar ratio resulted in the highest elongation at break of 120%. Cured XNBR exhibited increased thermal stability, indicating successful ionic crosslinking between L-lysine: Glycerol and XNBR matrices. This study underscores AADES’s potential as a promising crosslinking agent in polymer development, offering enhanced performance and reduced environmental impact.
Keywords
Amino Acid-Based Deep Eutectic Solvents (AADES), Carboxylated Acrylonitrile Butadiene Rubber (XNBR), Crosslinker
Published online 4/25/2025, 8 pages
Copyright © 2025 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: NURFATHIAH IZZATY Mohd Faridz Hilmy, AIMAN HANIF Hanafi, WAN ZAIREEN NISA Yahya, Development of amino acid deep eutectic solvent (AADES) as a crosslinker for carboxylated nitrile butadiene rubber (XNBR), Materials Research Proceedings, Vol. 53, pp 542-549, 2025
DOI: https://doi.org/10.21741/9781644903575-54
The article was published as article 54 of the book Decarbonization Technology
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
References
[1] G. Zhang., H. Feng., K. Liang., Z. Wang., X. Li., X. Zhou., B. Guo and L. Zhang “Design of next-generation cross-linking structure for elastomers toward green process and a real recycling loop,” Science Bulletin, vol. 65, no. 11, pp. 889–898, Jun. 2020, doi: https://doi.org/10.1016/j.scib.2020.03.008.
[2] M. Das, S. Pal, and K. Naskar, “A new route of cross‐linking of carboxylated acrylonitrile‐ butadiene rubber via zinc oxide ‐amino acid network formation,” Journal of Applied Polymer Science, vol. 138, no. 11, p. 49996, Oct. 2020, doi: https://doi.org/10.1002/app.49996.
[3] Y. Zhang, W. Yu, D. Han, J. Meng, H. Wang, and G. Cao, “L–lysine ameliorates sepsis- induced acute lung injury in a lipopolysaccharide-induced mouse model,” Biomedicine & pharmacotherapy, vol. 118, pp. 109307–109307, Oct. 2019, doi: https://doi.org/10.1016/j.biopha.2019.109307.
[4] L. Wang., C. Zhang, J. Zhang, Z. Rao, X.Xu, Z. Mao, X. Chen “Epsilon-poly-L-lysine: Recent Advances in Biomanufacturing and Applications,” Frontiers in Bioengineering and Biotechnology, vol. 9, Sep. 2021, doi: https://doi.org/10.3389/fbioe.2021.748976.
[5] L. A. Letti Junior, G. V. M. Letti, and C. R. Soccol, “Development of an L-Lysine Enriched Bran for Animal Nutrition via Submerged Fermentation by Corynebacterium glutamicum using Agroindustrial Substrates,” Brazilian Archives of Biology and Technology, vol. 59, p. e16150519, May 2016, doi: https://doi.org/10.1590/1678-4324-2016150519 .
[6] Y. Liang, W. Duan, X. An, Y. Qiao, Y. Tian, and H. Zhou, “Novel betaine-amino acid based natural deep eutectic solvents for enhancing the enzymatic hydrolysis of corncob,” Bioresource technology, vol. 310, pp. 123389–123389, Aug. 2020, doi: https://doi.org/10.1016/j.biortech.2020.123389.
[7] W. CHEN, Z. XUE, J. WANG, J. JIANG, X. ZHAO, and T. MU, “Investigation on the Thermal Stability of Deep Eutectic Solvents,” Acta Physico-Chimica Sinica, vol. 34, no. 8, pp. 904–911, 2018, doi: https://doi.org/10.3866/pku.whxb201712281.
[8] M. Das, T. R. Aswathy, S. Pal, and K. Naskar, “Effect of ionic liquid modified graphene oxide on mechanical and self-healing application of an ionic elastomer,” European Polymer Journal, vol. 158, p. 110691, Sep. 2021, doi: https://doi.org/10.1016/j.eurpolymj.2021.110691 .
[9] Z. Hasan, Md Zillur Rahman, B. Saha, and Sazzad Hossain Ador, “Progress in recovery, recycling and reuse of polymers, biopolymers and their composites,” Elsevier eBooks, Jan. 2023, doi: https://doi.org/10.1016/b978-0-323-96020-5.00185-0 .
[10] C Thongpin, C Wongprat, P Srithavorn, and P Muenchee, “Effect of Glycerol on Gluten filled in Natural Rubber/WG Blend,” IOP conference series. Materials science and engineering, vol. 965, no. 1, pp. 012033–012033, Nov. 2020, doi: https://doi.org/10.1088/1757- 899x/965/1/012033.
[11] Ján Kruželák, Klaudia Hložeková, A. Kvasničáková, M. Džuganová, I. Chodák, and I. Hudeč, “Application of Plasticizer Glycerol in Lignosulfonate-Filled Rubber Compounds Based on SBR and NBR,” Materials, vol. 16, no. 2, pp. 635–635, Jan. 2023, doi: https://doi.org/10.3390/ma16020635.
[12] N. A. Ramli, F. Rosli, M. A. Hamdan, and F. A“Synthesishesis Of Carrageenan-Based Biocomposite Plasticized With Deep Eutectic Solvent And Characterization Of Its Mechanical Properties,” Malaysian Journal of Analytical Sciences, Feb. 28, 2024. https://mjas.analis.com.my/mjas/v28_n1/html/28_1_5.html
