Proceedings of the International Conference on Current Problems in Engineering and Applied Sciences (ICCPEAS 2025)

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Reactive Compatibilization of EPDM/NBR Blends via Glycidyl Methacrylate Grafting: Effect on Interfacial Adhesion and Mechanical Performance

Authors
Fariz Amirli1, Rana Khankishiyeva1, 2, Aynur Mammadova1, *, Narmin Guliyeva1, 3
1Department of Chemical Technology, Azerbaijan State Oil and Industry University, Baku, Azerbaijan
2Institute of Radiation Problems, Baku, Azerbaijan
3Azerbaijan University of Architecture and Construction, Baku, Azerbaijan
*Corresponding author. Email: aynur.memmedova@asoiu.edu.az
Corresponding Author
Aynur Mammadova
Available Online 14 May 2026.
DOI
10.2991/978-94-6239-668-5_9How to use a DOI?
Keywords
EPDM; NBR; blends; materials; method
Abstract

This study focuses on improving the compatibility of EPDM/NBR (70/30) rubber blends through glycidyl methacrylate (GMA) grafting. Because EPDM is nonpolar and NBR is polar, their direct blending usually results in weak interfacial adhesion and poor mechanical performance. To solve this problem, GMA was grafted onto EPDM and NBR using peroxide-initiated melt and solution methods. FTIR analysis confirmed successful grafting by the appearance of new peaks at 1720 cm⁻1 (C = O ester group) and 910 cm⁻1 (epoxy group). The nitrile peak of NBR at 2235 cm⁻1 remained unchanged, showing that the main polymer structure was preserved. These results indicate chemical modification rather than simple physical mixing. Mechanical tests showed clear improvements after compatibilization. Tensile strength increased from 6 MPa to about 11 MPa, and elongation at break increased from 180% to over 300%. DMA results also showed higher storage modulus and lower tan δ peak intensity, indicating stronger interfacial bonding and reduced phase separation. Overall, GMA grafting is an effective and practical method to enhance interfacial adhesion and mechanical performance in EPDM/NBR blends, making these materials more suitable for engineering and sealing applications.

Copyright
© 2026 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the International Conference on Current Problems in Engineering and Applied Sciences (ICCPEAS 2025)
Series
Advances in Engineering Research
Publication Date
14 May 2026
ISBN
978-94-6239-668-5
ISSN
2352-5401
DOI
10.2991/978-94-6239-668-5_9How to use a DOI?
Copyright
© 2026 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Fariz Amirli
AU  - Rana Khankishiyeva
AU  - Aynur Mammadova
AU  - Narmin Guliyeva
PY  - 2026
DA  - 2026/05/14
TI  - Reactive Compatibilization of EPDM/NBR Blends via Glycidyl Methacrylate Grafting: Effect on Interfacial Adhesion and Mechanical Performance
BT  - Proceedings of the International Conference on Current Problems in Engineering and Applied Sciences (ICCPEAS 2025)
PB  - Atlantis Press
SP  - 84
EP  - 92
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6239-668-5_9
DO  - 10.2991/978-94-6239-668-5_9
ID  - Amirli2026
ER  -