International Journal of Adhesion and Adhesives最新文献

{"title":"Bond strength of a multilayer graded zirconia to a self-adhesive resin cement","authors":"Beatriz Serralheiro da Cruz ,&nbsp;Genesis Sulay Alfonzo-Leon ,&nbsp;Alinne Siqueira de Carvalho ,&nbsp;Camila da Silva Rodrigues ,&nbsp;Cesar Rogerio Pucci ,&nbsp;Renata Marques de Melo","doi":"10.1016/j.ijadhadh.2026.104282","DOIUrl":"10.1016/j.ijadhadh.2026.104282","url":null,"abstract":"<div><div>The latest generation of zirconia used in dental applications features a graded microstructure combining tetragonal and cubic grains to balance translucency and mechanical strength. However, limited evidence exists regarding the adhesion of its individual layers, particularly when simplified protocols such as self-adhesive cementation are used. This study evaluated the interfacial bond strength between different layers of a multilayer zirconia (3Y-TZP, transition zone, and 5Y-PSZ) and a self-adhesive resin cement, with or without a universal primer, at baseline and after aging. Thirty slabs of multilayer zirconia (IPS e.max ZirCAD Prime) were air-abraded and bonded with resin composite cylinders (Multilink Speed) applied with or without a universal primer (Monobond N) (n = 15 per group). Half of the specimens were tested after 24 h and the others after six months of water storage. Micro-shear bond strength was measured, and failure modes were classified. Three-way ANOVA revealed that primer application and aging significantly affected bond strength (p &lt; 0.001), while zirconia layer had no effect (p &gt; 0.05). Primer use improved initial adhesion but did not provide long-term benefits, as bond strength decreased after aging in primed groups, whereas non-primed groups showed stable bonding performance despite compositional gradients in the ceramic substrate.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"148 ","pages":"Article 104282"},"PeriodicalIF":3.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cleaning efficacy and bond interaction of glycine-based air polishing and glass microparticles abrasion on dentin impregnated with premixed bioceramic sealer","authors":"Ândresson Aurélio Fernandes Martins ,&nbsp;Maria Carolina Sidonio Alves ,&nbsp;Bruno Martins Maciel ,&nbsp;José Rodolfo Estruc Verbicário ,&nbsp;João Felipe Besegato ,&nbsp;Wilfredo Gustavo Escalante-Otárola ,&nbsp;Milton Carlos Kuga","doi":"10.1016/j.ijadhadh.2026.104277","DOIUrl":"10.1016/j.ijadhadh.2026.104277","url":null,"abstract":"<div><h3>Purpose</h3><div>To evaluate the effect of mechanical cleaning protocols, including glycine-based air polishing and abrasion with 2 % chlorhexidine gel containing glass microparticles, on the removal of premixed bioceramic sealer residues from dentin and the bond strength of a universal adhesive applied in self-etch mode.</div></div><div><h3>Materials and methods</h3><div>Sixty bovine dentin specimens were impregnated with either AH Plus Bioceramic Sealer or Bio-C Sealer and subjected to one of three cleaning approaches: control (water-moistened cotton pellet), glycine-based air polishing (Clinpro Prophy), or 2 % chlorhexidine gel with glass microparticles (Consepsis Scrub). Residue persistence was evaluated by scanning electron microscopy (SEM). Resin tag penetration was analyzed by confocal laser scanning microscopy (CLSM). Microshear bond strength (μSBS) testing was performed using Scotchbond Universal Plus. Failure modes were classified under an optical microscope. Data were analyzed using Kruskal–Wallis/Dunn tests (residue), one-way ANOVA/Tukey (tag length), and two-way ANOVA/Tukey (μSBS), with α = 0.05.</div></div><div><h3>Results</h3><div>Glycine-based air polishing removed sealer residues effectively, promoted extensive resin tag formation, and produced bond strength values comparable to control groups, regardless of the sealer used. The chlorhexidine–glass microparticle protocol produced greater residue persistence, reduced tag formation, and lower μSBS values. Adhesive failures predominated in the CHX-treated groups, while cohesive failures were more frequent in glycine and control groups.</div></div><div><h3>Conclusion</h3><div>Glycine-based air polishing effectively cleaned dentin impregnated with premixed bioceramic sealers without compromising adhesive performance. In contrast, the 2 % chlorhexidine gel containing glass microparticles negatively affects dentin cleaning and bonding effectiveness. Therefore, selecting an appropriate cleaning protocol is essential to optimize adhesion after endodontic obturation.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"147 ","pages":"Article 104277"},"PeriodicalIF":3.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shear behavior and EMI-based damage identification of adhesive shear connectors in steel-UHPC composite beams","authors":"Zebin Hu,&nbsp;Cong Zhu,&nbsp;Yinglan Li,&nbsp;Guanghui Zheng,&nbsp;Jun Deng","doi":"10.1016/j.ijadhadh.2026.104284","DOIUrl":"10.1016/j.ijadhadh.2026.104284","url":null,"abstract":"<div><div>Adhesive shear connectors have been proposed as an alternative to traditional metal shear connectors in steel-ultra high-performance concrete (UHPC) composite beams to overcome issues such as stress concentration and welding-induced residual stress. In this study, push-out tests were conducted to investigate the effects of steel surface treatments and adhesive curing age on the shear behavior of interface adhesive (IA) and epoxy resin (ER) shear connectors. In addition, an electromechanical impedance (EMI)-based monitoring technique using piezoelectric transducers (PZTs) was employed to identify the damage in adhesive shear connectors. The test results showed that the ultimate shear stress of IA and ER shear connectors with sandblasted steel surfaces increased by 39.79 % and 49.61 %, respectively, compared to those with smooth surfaces. After 3 days of curing, the ultimate shear stress of IA shear connectors reached approximately 80 % of their 7-day strength, whereas ER shear connectors achieved 87 % of their 7-day strength. For IA shear connectors, adhesive cohesive failure was observed at a curing age of 3 days, while UHPC failure occurred after 7 days of curing. Empirical formulas were developed to predict the ultimate shear stress for both types of shear connectors, with a deviation within 7 % compared to the experimental results. Furthermore, the effectiveness of the EMI-based monitoring method in detecting micro-damage was verified by a notable increase in the RMSD index during Stage II (damage stage).</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"147 ","pages":"Article 104284"},"PeriodicalIF":3.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing the performance of asphalt using waste recycled cotton fibers: A rheological and microstructural study","authors":"Qi Guo,&nbsp;Jianguo Wei,&nbsp;Qilin Fu,&nbsp;Hao Wu,&nbsp;Dawei Huo","doi":"10.1016/j.ijadhadh.2026.104281","DOIUrl":"10.1016/j.ijadhadh.2026.104281","url":null,"abstract":"<div><div>The improper disposal of waste textiles causes severe environmental damage, while inadequate performance of asphalt leads to rapid deterioration of road service life. Enhancing asphalt mastic using recycled textile fibers is therefore crucial for waste valorization, extended pavement longevity, and sustainable development. This study investigates the high-value utilization of waste recycled cotton fibers (WRCF) as a novel reinforcement material in asphalt mastic, with a focus on the effects of fiber diameter, length, and content on rheological properties. The rheological performance was evaluated using a dynamic shear rheometer (DSR) and a bending beam rheometer (BBR), while micro-mechanisms were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Results show that the optimal parameters are fibers with a diameter of 10–20 μm, length of 6 mm, and content of 0.2 wt%. This formulation significantly improved high-temperature rutting resistance, increasing the rutting factor by 215 % at 46 °C, and enhanced low-temperature performance, indicated by a 19 % rise in the m-value and a 23 % reduction in stiffness modulus at −12 °C. Microstructural analysis revealed that a uniform fiber network improves stress distribution, and FTIR confirmed that the reinforcement is primarily physical, dominated by mechanical interlocking without new chemical bond formation. This research demonstrates a dual-benefit strategy that achieves waste valorization alongside enhanced material performance. It enables the high-value recycling of textile waste and, owing to the low cost and compatibility with existing industrial processes of recycled cotton fibers, presents outstanding potential for large-scale application.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"147 ","pages":"Article 104281"},"PeriodicalIF":3.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temperature and conversion dependencies of the polymerization of furfuryl alcohol","authors":"Elisabeth Billich ,&nbsp;Markus Bacher ,&nbsp;Wilfried Sailer-Kronlachner ,&nbsp;Antje Potthast ,&nbsp;Hendrikus van Herwijnen","doi":"10.1016/j.ijadhadh.2026.104276","DOIUrl":"10.1016/j.ijadhadh.2026.104276","url":null,"abstract":"<div><div>Poly(furfuryl) alcohol (PFA) thermosetting resins, derived from bio-based monomeric furfuryl alcohol (FA), are promising candidates for sustainable adhesive systems. However, their complex multi-step polymerization mechanism complicates kinetic studies, which are useful for knowledge-based optimization of resin formulations. Here, PFA resins synthesized with oxalic acid (OX) and maleic anhydride (MA) as catalysts were investigated using a combination of Nuclear Magnetic Resonance (NMR) and Differential Scanning Calorimetry (DSC). Combining both methods allowed comparison of molecular-level polymerization with macroscopic curing kinetics of PFA. ¹H NMR enabled quantitative tracking of reactive species during synthesis, revealing an initial stage dominated by methylene and methylene ether bridge formation. From these data, overall and individual rate constants were derived, providing a reliable description of the early polymerization phase. DSC analysis was used to study temperature-dependent curing kinetics. Activation energies of samples with varying polymerization degrees exhibited characteristic profiles indicative of the complexity of FA polymerization. While DSC showed a nearly constant activation energy up to a conversion of ∼0.4, comparison to ¹H NMR data suggests that this can only be partly described by the formation of linear structures. Although activation energies from DSC were higher than those from ¹H NMR, comparable rate constants for the early stages of polymerization were obtained.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"147 ","pages":"Article 104276"},"PeriodicalIF":3.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of temperature on the static response of bonded structural patch repairs","authors":"Yesim Kokner,&nbsp;Feridun Delale,&nbsp;Niell Elvin","doi":"10.1016/j.ijadhadh.2026.104279","DOIUrl":"10.1016/j.ijadhadh.2026.104279","url":null,"abstract":"<div><div>Aircraft and automotive structures are often subjected to stresses that can lead to damage or weakening over time, particularly in aging systems. To repair such damage, adhesively bonded composite patches have been used as an efficient temporary repair method, offering reduced stress concentration relative to mechanically fastened repairs and enabling continued operation of the structure until a permanent repair can be implemented. This study examines the static performance of cracked aluminum and steel specimens repaired with glass-fiber/epoxy and carbon-fiber/epoxy patches, focusing on the effects of patch type, patch thickness, substrate thickness, and environmental conditions. Damage was introduced into the specimens by generating a central fatigue crack, after which they were repaired using epoxy-bonded patches and tested under static loading at different temperatures: room-temperature (70 °F), high-temperature (145 °F), and low-temperature (−60 °F). As expected, the experimental results showed that patched specimens exhibited a higher load-carrying capacity than those without patches. While temperature did not significantly affect the unpatched specimens, the load-carrying capacity of the patched specimens was reduced at high temperature due to adhesive softening, with a reduction of approximately 13–18 % relative to room temperature across all material and patch combinations. In contrast, low-temperature conditions resulted in a smaller reduction of approximately 2–8 % compared to room temperature. In addition to the experiments, finite element (FE) models were developed in ABAQUS© to predict failure loads using a stress intensity factor (SIF) approach and to interpret the experimental results. The FE predictions showed close agreement with the experimental results with prediction errors ranging from approximately 1.5 %–10.9 % across all materials and patch combinations at different temperatures. These findings confirm that bonded composite patch repair improves the strength of damaged structures and that finite element modeling can accurately predict their performance at different temperatures.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"147 ","pages":"Article 104279"},"PeriodicalIF":3.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing conductivity of silver-based conductive adhesives via biomass-derived aldehydes: Interfacial modification and network densification","authors":"Haibo Liu,&nbsp;Haichen Lai,&nbsp;Jun Chen,&nbsp;Xingguang Zhang","doi":"10.1016/j.ijadhadh.2026.104259","DOIUrl":"10.1016/j.ijadhadh.2026.104259","url":null,"abstract":"<div><div>Electrically conductive adhesive (ECA) is a low-temperature bonding material that can replace toxic Sn-Pb solder. However, the electrical properties of ECA are severely deteriorated by insulating organic lubricants (e.g., oleic acid, stearic acid) on the surface of Ag flakes. Current methods for surface modification often rely on non-renewable or environmentally-concerning chemicals. This work proposes a sustainable and effective approach by utilizing biomass-derived aldehydes, such as hydroxymethylfurfural (HMF), for the interfacial modification of Ag flakes and concurrent densification of epoxy matrix. The resulting ECA achieved a minimum bulk resistivity of 2.49 × 10⁻⁵ Ω cm at an optimal HMF loading of 0.3 wt% (relative to Ag), achieving ∼26.5 % of decline, compared with that of untreated reference (3.38 × 10⁻⁵ Ω cm). Comprehensive characterizations (XPS, FT-IR) revealed that HMF was oxidized by oxygen during curing and generated carboxylic acid groups. These carboxyl groups participate in co-curing reactions with the epoxy matrix and enhanced the conductive network. The strategy also applied to other biomass-derived molecules, such as 2,5-furandicarboxylic acid (FDCA). This study provides a novel, green methodology that bridges the gap between high conductivity and sustainable material design in ECA.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"147 ","pages":"Article 104259"},"PeriodicalIF":3.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145908828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cashew nut shell liquid as a promising candidate for the synthesis of cardanol-oxaldehyde wood adhesives","authors":"Eva Nyoni,&nbsp;Petro Mabeyo,&nbsp;Aldo Kitalika","doi":"10.1016/j.ijadhadh.2026.104274","DOIUrl":"10.1016/j.ijadhadh.2026.104274","url":null,"abstract":"<div><div>This study reports the synthesis and performance evaluation of a bio-based cardanol–oxaldehyde (CAO) wood adhesive derived from cashew nut shell liquid (CNSL), a non-edible agro-industrial by-product enriched in phenolic constituents. Anacardic acid was selectively extracted from CNSL via the calcium anacardate method and subsequently decarboxylated at 145 °C to yield cardanol. The adhesive precursor was synthesized by reacting cardanol with oxaldehyde at a molar ratio of 1:3 under controlled thermal conditions (70–90 °C, 1 h). Fourier-transform infrared spectroscopy (FTIR) confirmed the formation of new functional groups indicative of successful condensation and polymerization.</div><div>Mechanical testing revealed that the CAO adhesive achieved an ultimate shear strength of 6.37 MPa, yield strength of 2.69 kN, and tensile strength of 3.0 MPa. Comparative analysis with two commercial adhesives (CA1 and CA2) demonstrated that the CAO formulation surpassed CA2 across all measured parameters and exhibited performance comparable to CA1 (ultimate shear strengths of 6.74 MPa and 5.7 MPa; tensile strengths of 4.8 MPa and 2.6 MPa, respectively). These findings position the CAO adhesive as a viable and competitive alternative to petrochemical-based products.</div><div>The work underscores the potential of CNSL-derived phenolic polymers in sustainable adhesive technologies, contributing to the advancement of bio-based materials in industrial applications. By valorizing agricultural waste and reducing reliance on fossil-derived inputs, this approach aligns with global efforts toward environmentally responsible manufacturing.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"147 ","pages":"Article 104274"},"PeriodicalIF":3.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Machine learning prediction of failure load in composite and metallic single-lap adhesive joints","authors":"Bahador Bahrami ,&nbsp;Saba Abbaszadeh ,&nbsp;Hossein Talebi ,&nbsp;Majid R. Ayatollahi ,&nbsp;Mohammad Reza Khosravani","doi":"10.1016/j.ijadhadh.2026.104265","DOIUrl":"10.1016/j.ijadhadh.2026.104265","url":null,"abstract":"<div><div>In the present study, various machine learning (ML) models were developed to predict the failure loads of single-lap joints (SLJs). Initially, data were gathered from the existing literature, notably including composite adherends, which present unique challenges for failure load prediction due to their anisotropic behavior and complex fracture mechanisms. Approximately 38 % of the total gathered data (167 out of 440 data points) consisted of structures with composite adherends. Subsequently, the feature-selection methods identified key predictive features, and the preprocessing techniques identified the optimal scaler. Several ML models were constructed and then optimized using different methods. Additionally, using 45 unseen data points, 35 % of which consisted of structures with composite adherends, the generalization of the models was assessed. In the next step, to interpret the constructed models, the shapley additive explanations (SHAP) method was employed. Moreover, to contextualize the identified features with previous physical findings, partial dependence plots (PDPs) were generated, ensuring the models’ reliability. The gradient boosting regressor (GBR) model achieved the best mean absolute percentage error (MAPE) among all the models built, indicating about 11 % MAPE on the unseen dataset, presenting the most favorable performance. Ultimately, in comparison to the conventional numerical and analytical methods, which are highly computationally expensive, the accurate results of the proposed ML framework affirmed its potential as a viable alternative to these methods.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"147 ","pages":"Article 104265"},"PeriodicalIF":3.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Valorization of PET waste via glycolysis-derived polyol into high performance polyurethane-modified asphalt: performance optimization and sustainability assessment","authors":"Guoqiang Sun ,&nbsp;John Mathews Kelomae ,&nbsp;Tianshuai Li ,&nbsp;Mingjun Hu ,&nbsp;Long Cheng ,&nbsp;Shuangxu Liu","doi":"10.1016/j.ijadhadh.2026.104287","DOIUrl":"10.1016/j.ijadhadh.2026.104287","url":null,"abstract":"<div><div>To address the accumulation of polyethylene terephthalate (PET) waste and reliance on petroleum, this study valorized post-consumer PET through glycolysis into recycled polyol (rPET) used for developing high-performance recycled PET-based polyurethane-modified asphalt (rP-PUMA). The rPET partially replaced petroleum-based polytetramethylene glycol (PTMG-2000) through hydroxyl (<em>-OH</em>) replacement. Systematic determination of ideal <em>-OH</em> replacement, processing parameters, and evaluation of modifier content on physical properties, rheological performance, environmental and economic impacts were conducted. Results indicated that 37% <em>-OH</em> replacement, with mixing at 120 °C for 10 min, provided an optimal balance between rP-PU network integrity and chain mobility, achieved a ductility of 60 cm at 5 °C and softening point above 60 °C at 35% rP-PU content. Performance tests across 35–65% modifier content showed that at 65%, rP-PUMA exhibited superior low-temperature flexibility (89.8 cm ductility) compared to conventional polyurethane-modified asphalt (PUMA, 45.4 cm), as well as excellent high-temperature stability (softening point up to 132 °C). This enhanced flexibility was attributed to rP-PUMA's heterogeneous soft-segment structure. Rheological analysis revealed rP-PUMA was more temperature-sensitive than PUMA at 35–55% modifier content but comparable at 65%, where phase inversion created a temperature-insensitive polymer-rich network. Sustainability and cost assessments demonstrated rP-PUMA's feasibility, with 65% modifier content diverting about 1610 PET bottles per ton of binder, reducing material costs by an average of 12% compared to PUMA. This study highlighted dual benefits of reducing PET waste and decreasing non-renewable polyol reliance, offering a sustainable pathway for circular economy practices in waste management and offered a feasible approach for high-performance binder application.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"147 ","pages":"Article 104287"},"PeriodicalIF":3.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}