Recycled Polyacrylonitrile Nanofiber Interleaves With Graphene Nanoplatelets for Adhesively Bonded Composite Joints: Lap‐Shear and Opening‐Mode Fracture Performance
Source abstract
Abstract
ABSTRACT This study presents a sustainable toughening strategy for adhesively bonded CFRP joints by using electrospun polyacrylonitrile (PAN) nanofiber interleaves produced from virgin PAN (vPAN) and recycled PAN (rPAN) recovered from textile‐waste Orlon. Graphene nanoplatelet (GNP)‐hybridized vPAN and rPAN interleaves were also examined to clarify the combined effect of nanofiber bridging and GNP‐assisted crack resistance. Single‐lap joint tests showed that the lap‐shear strength increased from 10.34 MPa for neat epoxy to 11.80 MPa for vPAN/Ep and 12.40 MPa for rPAN/Ep. The highest strength was obtained for GNP–rPAN/Ep, reaching 13.24 MPa, which corresponds to a 28.08% improvement over neat epoxy. Under Mode‐I DCB loading, the crack‐initiation load increased from 49.39 N for neat epoxy to 77.68 N for GNP–rPAN/Ep, while the critical fracture energy increased from 230.16 to 376.31 J/m 2 . Fracture surface observations indicated that nanofiber interleaving changed the damage response from a more interface‐dominated appearance toward a more heterogeneous mixed‐fracture character. SEM observations further supported the activation of nanofiber bridging, pull‐out, crack‐path deviation, and GNP‐assisted pinning/deflection mechanisms. The results show that rPAN nanofiber interleaves have the potential to improve joint strength and fracture resistance and promote the use of circular materials in composite bonding applications.
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Research context
OpenAlex topics: Mechanical Behavior of Composites · Fiber-reinforced polymer composites · Graphene research and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Aeronautical Engineering Necmettin Erbakan University Konya Turkey
Meram Vocational School Necmettin Erbakan University Konya Turkey
Huglu Vocational School Selcuk University Konya Turkey
Sabanci University Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence Istanbul Turkey
Funding
Necmettin Erbakan Üniversitesi
References (62)
Show source-provided references
1. Gamma‐Ray and Neutron Attenuation of Carbon Fiber/Epoxy Composites With Carbon Nanotubes and Boron Nitride Nanoparticles for Passive Shielding Applications in Space10.1002/pc.29408 ↗
2. Coupled Dimensional Energy Balance and Machine Learning Validation for Ballistic Response Prediction of Fiber Composites
3. Assessing Fracture Toughness Performance of Adhesively Bonded Carbon Fiber/Epoxy Composite Joints Accompanied by Acoustic Emission Inspection: Effect of Surface Treatment Methods10.1016/j.engfracmech.2025.111119 ↗
4. Quasi‐Static and Thermoviscoelastic Response of Carbon/Epoxy–Aluminum FMLs: Effects of Stacking Sequence and Graphene–TiO2 Nano‐Modification10.1007/s12221-026-01371-2 ↗
5. The Impact of Graphene Filler on the Energy Absorption of Hybrid Composite Crash Boxes10.1007/s10999-024-09739-z ↗
6. Composite Materials: A Bibliometric Analysis10.3934/matersci.2024055 ↗
7. Davim J. P. · 201710.1515/9783110435788 ↗
8. Davim J. P. · 201310.1515/9783110267426 ↗
9. Effect of Particles on Tensile and Bending Properties of Jute Epoxy Composites10.1515/mt-2021-2038 ↗
10. Effects of Artificial Hydrothermal Aging on Crush Boxes Made From Glass, Carbon and Aramid Fiber‐Reinforced Hybrid Composites10.3390/polym18020249 ↗
11. Enhanced Fracture Toughness and Controlled Curing of Basalt Fiber/Epoxy Composites via PPE Powder Modification10.1016/j.engfracmech.2026.112208 ↗
12. Fracture and Fatigue Assessment of Bonded Composite Patch Repairs in Notched and Cracked Plates10.3390/polym18080912 ↗
13. Investigation of the Effects of Nanoparticle Reinforcement on the Mechanical Properties of Woven Composites10.1002/pc.27182 ↗
14. Quasi‐Static Tensile Loading Performance of Bonded, Bolted, and Hybrid Bonded‐Bolted Carbon‐To‐Carbon Composite Joints: Effect of Recycled Polystyrene Nanofiber Interleaving10.1016/j.compstruct.2023.117445 ↗
15. The Effect of Fiber Length and Structure on Joint Strength in Bonded Joints With Fiber‐Reinforced Composite Adhesive10.1016/j.ijadhadh.2023.103365 ↗
16. Effects of Laminate Carbon/Epoxy Composite Patches on the Strength of Double‐Strap Adhesive Joints: Experimental and Numerical Analysis10.1016/j.matdes.2013.04.037 ↗
17. The Strength of the Adhesively Bonded Step‐Lap Joints for Different Step Numbers10.1016/j.compositesb.2014.06.023 ↗
18. The Effect of Co‐Creation of Notches and Recesses in the Adhered Material on the Strength of Single‐Lap Adhesive Joints: Experimental and Numerical Analysis10.1016/j.ijadhadh.2023.103336 ↗
19. The Effect of Geometry on Joint Strength in Adhesively Bonded Joints With the Same Adhesive Area10.1080/15376494.2022.2162641 ↗
20. The Effect of Adherend Thickness and Width on Fracture Behavior in Adhesively Bonded Double Cantilever Beam Joints10.26701/ems.566773 ↗
21. Influence of Carbon and Glass Fiber Reinforced Composite Adhesive on the Strength of Adhesively Bonded Joints10.1515/mt-2022-0284 ↗
22. Effect of Atmospheric Plasma Treatment on Mode‐I and Mode‐II Fracture Toughness Properties of Adhesively Bonded Carbon Fiber/PEKK Composite Joints10.1016/j.engfracmech.2023.109463 ↗
23. Nanoparticle Integration in Adhesive and Hybrid Single Lap Joints: Effect on Strength and Fatigue Life Under Environmental Aging10.1080/01694243.2024.2411305 ↗
24. Improved Damage Sensing With Random/Aligned Carbon Nanofiber in Bulk Epoxy and Adhesive Joints10.1002/pc.26921 ↗
25. Improving Mechanical Behavior of Adhesively Bonded Composite Joints by Incorporating Reduced Graphene Oxide Added Polyamide 6, 6 Electrospun Nanofibers10.1016/j.compstruct.2024.118026 ↗
26. Effect of Composite to Aluminum Single Lap Joints Reinforced With Graphene Doped Nylon 6.6 Nanofibers10.1177/0954408921998467 ↗
27. Fiber Alignment and Mode‐Mixity Effects on Fracture Behavior of CNF/Epoxy Nanocomposite Adhesive Joints10.1016/j.compositesb.2022.110341 ↗
28. Impact Resistance of Composite to Aluminum Single Lap Joints Reinforced With Graphene Doped Nylon 6.6 Nanofibers10.1016/j.ijadhadh.2023.103565 ↗
29. Fracture Assessment of Polyacrylonitrile Nanofiber‐Reinforced Epoxy Adhesive10.1016/j.tafmec.2017.07.023 ↗
30. Experimental Investigation on the Enhancement of Mode I Fracture Toughness of Adhesive Bonded Joints by Electrospun Nanofibers10.1080/00218464.2017.1402301 ↗
31. Investigating the Effects of pa66 Electrospun Nanofibers Layered Within an Adhesive Composite Joint Fabricated Under Autoclave Curing10.1021/acsomega.3c03419 ↗
32. Development of Innovative Thermoplastic Elium Nanocomposites Reinforced With ag/SiC‐Doped PAN Nanofibers: Advancing Mechanical Properties and X‐Ray Shielding Performance10.1007/s12221-025-00972-7 ↗
33. Enhanced Mechanical and Shape Memory Properties of Elium Nanocomposites Reinforced With Graphene and Iron (II, III) Oxide‐Doped Polyacrylonitrile Nanofibers10.1007/s12221-025-00926-z ↗
34. Determination of the Effects of GNP and Nano‐Fibers on Bonding Joints10.1016/j.jmapro.2021.09.013 ↗
35. The Effects of Graphene Nanostructure Reinforcement on the Adhesive Method and the Graphene Reinforcement Ratio on the Failure Load in Adhesively Bonded Joints10.1016/j.compositesb.2016.05.039 ↗
36. Investigation of Mechanical and Thermal Properties of Nanostructure‐Doped Bulk Nanocomposite Adhesives10.1080/00218464.2017.1415809 ↗
37. Electrospinning: A Fascinating Fiber Fabrication Technique10.1016/j.biotechadv.2010.01.004 ↗
38. Nanofiber Diameter in Electrospinning of Polymer Solutions: Model and Experiment10.1016/j.polymer.2016.05.045 ↗
39. Role of Chain Entanglements on Fiber Formation During Electrospinning of Polymer Solutions: Good Solvent, Non‐Specific Polymer–Polymer Interaction Limit10.1016/j.polymer.2005.03.011 ↗
40. A Comprehensive Review Summarizing the Effect of Electrospinning Parameters and Potential Applications of Nanofibers in Biomedical and Biotechnology10.1016/j.arabjc.2015.11.015 ↗
41. Synthesis of Centrifugally Spun Polyacrylonitrile‐Carbon Fibers10.1016/j.jmrt.2023.12.146 ↗
42. Microstructure and Mechanical Properties of Polyacrylonitrile Precursor Fiber With Dry and Wet Drawing Process10.3390/polym13101613 ↗
43. Structural Study of Polyacrylonitrile‐Based Carbon Nanofibers for Understanding Gas Adsorption10.1021/acsami.1c13541 ↗
44. Effect of Delustering Agent on Physical and Mechanical Properties of Nylon 6
45. Y.Katagiri T.Obata M.Sugiura andR.Yasuda “Titanium dioxide‐containing synthetic filament having improved properties textile products made therefrom and method of imparting said improved properties Google Patents ”1971.
46. Self‐Induced Synthesis of Phase‐Junction TiO2 With a Tailored Rutile to Anatase Ratio Below Phase Transition Temperature10.1038/srep20491 ↗
47. Effect of Temperature Treatment on Electrical Property, Crystal Structures and Lattice Strains of Precipitated CaCO3 Nanoparticles10.1590/1980-5373-mr-2019-0461 ↗
48. Thermal and Mechanical Properties of Copper‐Graphite and Copper‐Reduced Graphene Oxide Composites10.1016/j.compositesb.2018.11.004 ↗
49. Large‐Scale Production of Edge‐Selectively Functionalized Graphene Nanoplatelets via Ball Milling and Their Use as Metal‐Free Electrocatalysts for Oxygen Reduction Reaction10.1021/ja3091643 ↗
50. Comparison of Microstructural Evolution Differences During Dry‐Jet Wet Spinning and Wet Spinning for Polyacrylonitrile Precursor Fiber10.1038/s41598-025-05449-4 ↗
51. Investigation of the Chemical Changes During Thermal Treatment of Polyacrylonitrile and 15N‐Labelled Polyacrylonitrile by Means of In‐Situ FTIR and 15N NMR Spectroscopy10.1016/j.polymdegradstab.2017.10.018 ↗
52. The Application of FTIR Spectroscopy on Characterization of Paper Samples, Modified by Bookkeeper Process10.1016/j.vibspec.2006.01.010 ↗
53. Effect of Elevated Temperatures on the States of Water and Their Correlation With the Proton Conductivity of Nafion10.1021/acsomega.7b01765 ↗
54. Effect of the Geometry in the Strength of Single‐Lap Adhesive Joints of Composite Laminates Under Uniaxial Tensile Load10.1016/j.ijadhadh.2016.10.009 ↗
55. A Review on Failure Theories and Simulation Models for Adhesive Joints10.1080/00218464.2021.1941903 ↗
56. Developments in Laminate Modification of Adhesively Bonded Composite Joints10.3390/ma16020568 ↗
57. Graphene Reinforced Epoxy Adhesive for Fracture Resistance10.1016/j.compositesb.2018.09.093 ↗
58. Exploring the Impact of Graphene Nanoplatelets on Adhesive Mechanical Strength: A Comprehensive Investigation Into Single‐Lap Joint Elastoplastic Behavior via Cohesive Zone Method10.1016/j.ijadhadh.2024.103908 ↗
59. Fracture From Mode I Dominated to Mixed Mode I‐II in CFRP Repaired Steel Pipes10.1016/j.compstruct.2024.118798 ↗
60. Fracture Behaviour of Epoxy Adhesive Joints Modified With Core‐Shell Rubber Nanoparticles10.1016/j.engfracmech.2017.05.032 ↗
61. Effects of Polyvinyl Alcohol Nanofiber Mats on the Adhesion Strength and Fracture Toughness of Epoxy Adhesive Joints10.1016/j.compositesb.2017.11.049 ↗
62. Mode‐I and II Fracture Behavior of Metal‐To‐Composite Bonded Interfaces With a Graphene Nanoplatelet‐Reinforced Structural Epoxy Adhesive10.1177/14644207241226609 ↗