International Journal of Adhesion and Adhesives最新文献

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Effect of manufacturing parameters and environmental factors on the mechanical behavior of AA5052-H36 adhesively bonded overlap joints
IF 3.2 3区 材料科学
International Journal of Adhesion and Adhesives Pub Date : 2025-01-04 DOI: 10.1016/j.ijadhadh.2025.103940
Marzieh Nodeh , Ahmed Maslouhi , Alain Desrochers
{"title":"Effect of manufacturing parameters and environmental factors on the mechanical behavior of AA5052-H36 adhesively bonded overlap joints","authors":"Marzieh Nodeh ,&nbsp;Ahmed Maslouhi ,&nbsp;Alain Desrochers","doi":"10.1016/j.ijadhadh.2025.103940","DOIUrl":"10.1016/j.ijadhadh.2025.103940","url":null,"abstract":"<div><div>This study investigated the joint resistance and fatigue behavior of single-lap Al 5052-H36 adhesively bonded joints. The main objective is to study the effect of factors related to the production of adhesively bonded joints and the effect of environmental factors on mechanical performance of the joint. The effect of silane abrasion as a surface treatment and adhesive curing condition were studied as the factors related to the production line. Two different degradation conditions named Cataplasma degraded, and apparent saturation conditions were investigated to evaluate the mechanical behavior of joints after degradation. Cataplasma as an accelerated aging condition is a combination of moisture coupled with high and low temperatures. Apparent saturation condition related to samples immersed at 70 C tap water to reach their moisture equilibrium status. The results demonstrate surface treatment improved fatigue life by 80 % and this improvement will be more considerable when structures are imposed to environmental degradation conditions. Curing bonded joints at room temperature increased their fatigue life by 68 % compared to poorly cured ones at −20 C. Although both environmental conditions reduced the fatigue life, however, this reduction was more severe for apparent saturation samples and the fatigue life decreased by 79 %.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"138 ","pages":"Article 103940"},"PeriodicalIF":3.2,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterization of bamboo particleboard bonded with Nelumbo nucifera seed starch-citric acid-based adhesive
IF 3.2 3区 材料科学
International Journal of Adhesion and Adhesives Pub Date : 2025-01-04 DOI: 10.1016/j.ijadhadh.2025.103937
Syaza Syaqqira Abdul Muhaimin , Nur Izzaati Saharudin , Abdul Fattah Nongman , Norhafizah Saari
{"title":"Characterization of bamboo particleboard bonded with Nelumbo nucifera seed starch-citric acid-based adhesive","authors":"Syaza Syaqqira Abdul Muhaimin ,&nbsp;Nur Izzaati Saharudin ,&nbsp;Abdul Fattah Nongman ,&nbsp;Norhafizah Saari","doi":"10.1016/j.ijadhadh.2025.103937","DOIUrl":"10.1016/j.ijadhadh.2025.103937","url":null,"abstract":"<div><div>This study evaluates bio-based <em>Nelumbo nucifera</em> starch-citric acid adhesives as sustainable alternatives to urea-formaldehyde for bamboo particleboard fabrication. Particleboards were produced using Semantan bamboo (<em>Gigantochloa scortechinii</em>) particles with three adhesive formulations: BPS100 (100 % starch), BPS75 (75 % starch, 25 % citric acid), and BPS50 (50 % starch, 50 % citric acid), targeting a density of 0.80 g/cm³ according to ASTM D1037 standards. Physical properties, including thickness swelling and water absorption, were assessed alongside mechanical properties such as modulus of rupture (MOR) and internal bond (IB) strength. The BPS50 formulation exhibited the lowest thickness swelling (76.85 %) and water absorption (134.5 %), as well as the highest MOR (5.448 MPa) and IB strength (0.372 MPa), outperforming both BPS75 and BPS100. However, the MOR value remains below the minimum required standard for general purposed particleboard, indicating the need for further development. FTIR analysis confirmed the formation of ester linkages between starch and citric acid, with enhanced carbonyl signals correlating with improved properties. While these findings highlight the potential of starch-citric acid adhesives as renewable, formaldehyde-free bio-adhesives for lignocellulosic particleboard composites, further optimization is necessary to meet industrial performance standards.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"138 ","pages":"Article 103937"},"PeriodicalIF":3.2,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168968","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}
引用次数: 0
The effect of rGO/SiO2 hybrid filler on Lap shear strength of Polyurethane adhesive having Poly (dimethyl siloxane) (PDMS)
IF 3.2 3区 材料科学
International Journal of Adhesion and Adhesives Pub Date : 2025-01-04 DOI: 10.1016/j.ijadhadh.2025.103942
Ganesh Yadav , Kavita Agarwal , Sunil Kumar Gupta
{"title":"The effect of rGO/SiO2 hybrid filler on Lap shear strength of Polyurethane adhesive having Poly (dimethyl siloxane) (PDMS)","authors":"Ganesh Yadav ,&nbsp;Kavita Agarwal ,&nbsp;Sunil Kumar Gupta","doi":"10.1016/j.ijadhadh.2025.103942","DOIUrl":"10.1016/j.ijadhadh.2025.103942","url":null,"abstract":"<div><div>The Polyurethane (PU) nanocomposite adhesive having Polydimethylsiloxane (PDMS) with 0.25 wt%, 0.50 wt%, and 1.0 wt% of reduced Graphene Oxide (rGO)/Silica (SiO<sub>2</sub>) as hybrid nanofillers was prepared using in situ polymerisation method. The morphology, phase separation, and thermal stability of the PU-PDMS nanocomposite adhesive with these fillers were analysed by FESEM (Field emission scanning electron microscopy), XRD (X-ray Diffractometer), and TGA (Thermogravimetric analysis), respectively. The functional group present in the PU-PDMS nanocomposite adhesive with rGO/SiO<sub>2</sub> hybrid nanofillers was determined by FTIR (Fourier transform infrared). The effect of the concentration of rGO/SiO<sub>2</sub> hybrid nanofillers in PU-PDMS neat adhesive on the shear strength of single lap aluminium adherends joints was examined. The thermal stability and lap shear strength were increased as the concentration of the rGO/SiO<sub>2</sub> hybrid nanofillers in the PU-PDMS adhesive increased up to 1.0 wt%. The ideal thickness of the adhesive layer for the neat PU-PDMS adhesive in lap shear joints was determined to be 0.5 mm. The shear strength of PU-PDMS nanocomposite adhesive with 1.0 wt% of rGO/SiO<sub>2</sub> hybrid filler was 249 % more than the neat PU-PDMS adhesives.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"138 ","pages":"Article 103942"},"PeriodicalIF":3.2,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167995","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}
引用次数: 0
Effect of distinct molecular structure of diols on the properties of bio-based wood adhesive
IF 3.2 3区 材料科学
International Journal of Adhesion and Adhesives Pub Date : 2025-01-02 DOI: 10.1016/j.ijadhadh.2025.103936
Rutu Patel , Mayankkumar L. Chaudhary , Smit Chaudhary , Ram K. Gupta
{"title":"Effect of distinct molecular structure of diols on the properties of bio-based wood adhesive","authors":"Rutu Patel ,&nbsp;Mayankkumar L. Chaudhary ,&nbsp;Smit Chaudhary ,&nbsp;Ram K. Gupta","doi":"10.1016/j.ijadhadh.2025.103936","DOIUrl":"10.1016/j.ijadhadh.2025.103936","url":null,"abstract":"<div><div>This study aimed to investigate the effect of different diol structures, both aliphatic and aromatic, on wood adhesives derived from renewable sources. Therefore, 1,3-propanediol (PRD), 1,5-pentanediol (PED), and hydroquinone (HQ) were used as crosslinkers with a non-edible oil-based polyol (castor oil (CO)). The HQ-based wood adhesive sample was anticipated to demonstrate higher mechanical strength due to its aromatic structure, which can impart rigidity and potentially lead to increased mechanical properties. Different weight percentages of diols relative to the bio-polyol were incorporated with the bio-polyol and isocyanate to prepare polyurethane (PU)-based wood adhesives, aiming to explore the effect of increasing diol concentrations on adhesive properties. All samples were cured at four different temperatures (room temperature, 50 °C, 75 °C, and 100 °C) to investigate thermal stability and mechanical strength. Unexpectedly, among all prepared adhesive samples, the PRD sample exhibited the highest mechanical strength (5.1 MPa). Gel and swell tests were conducted on all prepared samples to evaluate solubility, followed by FT-IR analysis to assess structural changes after these tests. No major changes were observed in the synthesized adhesive materials, indicating good crosslinking. The importance of bio-based materials in advanced wood adhesive applications is highlighted by our findings, which provide valuable insights into the design of sustainable PU adhesives with optimal characteristics.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"138 ","pages":"Article 103936"},"PeriodicalIF":3.2,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168001","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}
引用次数: 0
Adhesive modifiers for bitumen obtained from coumarone-indene fractions of liquid coal coking products
IF 3.2 3区 材料科学
International Journal of Adhesion and Adhesives Pub Date : 2024-12-30 DOI: 10.1016/j.ijadhadh.2024.103933
Serhiy Pyshyev , Yuriy Prysiazhnyi , Yuriy Demchuk , Guri Isaiah Borbeyiyong , Nataliya Vytrykush
{"title":"Adhesive modifiers for bitumen obtained from coumarone-indene fractions of liquid coal coking products","authors":"Serhiy Pyshyev ,&nbsp;Yuriy Prysiazhnyi ,&nbsp;Yuriy Demchuk ,&nbsp;Guri Isaiah Borbeyiyong ,&nbsp;Nataliya Vytrykush","doi":"10.1016/j.ijadhadh.2024.103933","DOIUrl":"10.1016/j.ijadhadh.2024.103933","url":null,"abstract":"<div><div>Modifiers are added to road bitumens to enhance their properties. The only significant disadvantage of current industrial modifiers is their relatively high cost. The authors develop a new way to solve this problem by using relatively cheap raw materials for obtaining effective adhesive modifiers for bitumen, namely, coal coking liquid products. Therefore, coumarone-indene resin (CIR) and coumarone-indene-carbazole resin (CICR) were obtained by ionic co-oligomerization based on fractions extracted from liquid products of coal coking (gasoline fractions and coal tar). When added in an amount of 7 wt%, CIR increases temperature resistance and doubles the adhesive properties of bitumens. However, CIR degrades the plasticity of bitumens, so to produce polymer-modified bitumen (PMB) cheap plasticizers (petroleum tar and resin from the decomposition of the organic mass of brown coal) must be used. CICR has practically no effect on the temperature resistance of bitumens, slightly improves their plasticity, and doubles the adhesion to glass at a content of 1 % wt.%. The CIR and CICR use will make it possible to obtain relatively inexpensive PMB.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"138 ","pages":"Article 103933"},"PeriodicalIF":3.2,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167994","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}
引用次数: 0
Comparison of adhesive system bond strength in composite restoration repairs: A systematic review and meta-analysis of in vitro studies
IF 3.2 3区 材料科学
International Journal of Adhesion and Adhesives Pub Date : 2024-12-30 DOI: 10.1016/j.ijadhadh.2024.103929
Fiorella Elizabeth Arévalo Tarrillo, Laura Cristina Leite Nardello, Mary Caroline Skelton Macedo, Maria Ângela Pita Sobral
{"title":"Comparison of adhesive system bond strength in composite restoration repairs: A systematic review and meta-analysis of in vitro studies","authors":"Fiorella Elizabeth Arévalo Tarrillo,&nbsp;Laura Cristina Leite Nardello,&nbsp;Mary Caroline Skelton Macedo,&nbsp;Maria Ângela Pita Sobral","doi":"10.1016/j.ijadhadh.2024.103929","DOIUrl":"10.1016/j.ijadhadh.2024.103929","url":null,"abstract":"<div><div>Repairing localized failures in restorations can be as durable as complete replacement, offering a more conservative and efficient alternative. However, no \"standard\" protocol or ideal materials currently exist for this procedure. This systematic review (PROSPERO CRD42022322572) investigated different adhesive systems (Total-etch, Self-etch, and Universal) in repairing direct composite restorations. The review included <em>in vitro</em> studies that evaluated bond strength in composite repairs after surface roughening. A comprehensive literature searches up to April 18, 2022, across six databases (PubMed, Scopus, Web of Science, Embase, LILACS and BDTL), identified 133 relevant studies from an initial 1357, with 15 meeting the inclusion criteria. Fourteen of these studies underwent quantitative analysis and meta-analysis. Quality Assessment Tool for <em>In Vitro</em> Studies was used to evaluate methodological quality. The meta-analysis was performed with R Studio, used the standardized mean difference with a 95 % confidence interval to assess bond strength. The random-effects study heterogeneity using the I-squared statistic. Tensile/microtensile studies found that Total-etch systems were more effective in enhancing bond strength, whereas shear and micro-shear studies favored Self-etch systems. The Universal adhesives showed inconsistent results between the two bond strength tests. Both types of studies, demonstrated that employing an adhesive system enhances bond strength in repairs. The review highlights the need for standardized research to achieve more definitive conclusions.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"138 ","pages":"Article 103929"},"PeriodicalIF":3.2,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169154","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}
引用次数: 0
Synergistic effects of a bionic villi structure and multiple hydrogen bonds on the increase in interfacial bonding strength of a 30-wt.% GF/PET-2024 aluminum alloy
IF 3.2 3区 材料科学
International Journal of Adhesion and Adhesives Pub Date : 2024-12-24 DOI: 10.1016/j.ijadhadh.2024.103932
Baojia Cheng, Lina Lu, Leyao Xu, Haoyu Wang, Ben Ma, Anbo Du, Shumei Lou
{"title":"Synergistic effects of a bionic villi structure and multiple hydrogen bonds on the increase in interfacial bonding strength of a 30-wt.% GF/PET-2024 aluminum alloy","authors":"Baojia Cheng,&nbsp;Lina Lu,&nbsp;Leyao Xu,&nbsp;Haoyu Wang,&nbsp;Ben Ma,&nbsp;Anbo Du,&nbsp;Shumei Lou","doi":"10.1016/j.ijadhadh.2024.103932","DOIUrl":"10.1016/j.ijadhadh.2024.103932","url":null,"abstract":"<div><div>In recent years, metal‒thermoplastic polymer hybrid joints have been widely used in lightweight advanced aircraft and new energy vehicles. In this work, the method of machine milling + FeCl<sub>3</sub> corrosion + coating KH-892 was used to construct a viscous bionic villi structure on the surface of A2024 aluminum alloy, which greatly improved the interfacial bonding strength of a 30-wt.% glass fiber-reinforced PET-A2024 aluminum alloy joint (expressed as 30-wt.% GF/PET-A2024 joint). The synergistic action of the millimeter column produced by milling and the micron-scale porous structure produced by corrosion results in multiscale mechanical interlocking and increases the interfacial bonding strength of 30-wt.% GF/PET-A2024 to 44.2 MPa, which is 13.7 times greater than that of untreated joint. FTIR results show that the KH-892 coating can change the viscosity of the villi surface, which makes it easier for the bionic villi surface to bond with PET. Under the action of millimeter‒micron multiscale mechanical interlocking and multiple hydrogen bonds, the interfacial bonding strength of 30-wt.% GF/PET-A2024 increases to 54.8 MPa.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"138 ","pages":"Article 103932"},"PeriodicalIF":3.2,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168000","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}
引用次数: 0
Can bioactive glasses compensate for polymer degradation in adhesive systems and reduce dentin permeability over time?
IF 3.2 3区 材料科学
International Journal of Adhesion and Adhesives Pub Date : 2024-12-24 DOI: 10.1016/j.ijadhadh.2024.103926
Amanda Márcia Maia Souza , Paulo Vitor Campos Ferreira , Felipe Silva Gomes , Luanna Marinho Sereno Nery , Ceci Nunes Carvalho , José Bauer , Darlon Martins Lima
{"title":"Can bioactive glasses compensate for polymer degradation in adhesive systems and reduce dentin permeability over time?","authors":"Amanda Márcia Maia Souza ,&nbsp;Paulo Vitor Campos Ferreira ,&nbsp;Felipe Silva Gomes ,&nbsp;Luanna Marinho Sereno Nery ,&nbsp;Ceci Nunes Carvalho ,&nbsp;José Bauer ,&nbsp;Darlon Martins Lima","doi":"10.1016/j.ijadhadh.2024.103926","DOIUrl":"10.1016/j.ijadhadh.2024.103926","url":null,"abstract":"<div><h3>Objective</h3><div>To evaluate the dentin permeability of experimental adhesive systems incorporated with 45S5 and NbG bioactive glasses (10 % and 20 %), compared to an experimental adhesive without bioactive glass after 12 months of storage in PBS.</div></div><div><h3>Methods</h3><div>Two-step self-etching adhesiv systems containing 10 % and 20 % by weight of 45S5 and NbG bioactive glasses were tested on forty freshly extracted human teeth. An experimental adhesive without microparticles was used as a control group. Dentin permeability was evaluated immediately after adhesive system application, 30 days, and 12 months after storage in PBS. The formation of nanoprecipitates on the dentin surface and within the tubules was analyzed at the end of the permeability tests using SEM/EDS. For statistical analysis, data were subjected to Shapiro-Wilk tests, two-way repeated measures ANOVA (<em><u>Material x Time</u></em>) and Holm-Sidak (α = 5 %).</div></div><div><h3>Results</h3><div>There was a statistically significant interaction between Material and Time (p &lt; 0.001). Significant differences were observed in the reduction of dentin permeability values among the adhesive systems evaluated after 12 months of immersion in PBS (p &lt; 0.001). All adhesive systems containing bioactive glass showed the lowest dentin permeability values compared to the control adhesive (p &lt; 0.001). SEM images showed mineral precipitation on the surface of the samples and microparticles and precipitates at the entrance of the dentinal tubules in the bioactive adhesive groups.</div></div><div><h3>Conclusion</h3><div>The addition of 45S5 and NbG bioactive glass at concentrations of 10 % and 20 % to an experimental adhesive system decreased the dentin permeability of the specimens evaluated after 12 months of immersion in PBS compared to the same adhesive system without the addition of bioactive material.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"138 ","pages":"Article 103926"},"PeriodicalIF":3.2,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168974","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}
引用次数: 0
Effect of DTPMP pretreatment on intraradicular dentin push-out bond strength and etching pattern of self-adhesive and conventional dual cure resin cement
IF 3.2 3区 材料科学
International Journal of Adhesion and Adhesives Pub Date : 2024-12-21 DOI: 10.1016/j.ijadhadh.2024.103931
Diego Neves Pinto , Tainah Oliveira Rifane , Manuela Timbó Farrapo , Ketelyn Kerty Moreira de Oliveira , Samara Tabata Medeiros , Vitaliano Gomes de Araújo-Neto , Salvatore Sauro , Diego Martins de Paula , Victor Pinheiro Feitosa
{"title":"Effect of DTPMP pretreatment on intraradicular dentin push-out bond strength and etching pattern of self-adhesive and conventional dual cure resin cement","authors":"Diego Neves Pinto ,&nbsp;Tainah Oliveira Rifane ,&nbsp;Manuela Timbó Farrapo ,&nbsp;Ketelyn Kerty Moreira de Oliveira ,&nbsp;Samara Tabata Medeiros ,&nbsp;Vitaliano Gomes de Araújo-Neto ,&nbsp;Salvatore Sauro ,&nbsp;Diego Martins de Paula ,&nbsp;Victor Pinheiro Feitosa","doi":"10.1016/j.ijadhadh.2024.103931","DOIUrl":"10.1016/j.ijadhadh.2024.103931","url":null,"abstract":"<div><h3>Objective</h3><div>To evaluate the push-out bond strength (PBS) and conditioning effects of diethylenetriamine-penta-phosphonic acid (DTPMP), as a pretreatment of intra-radicular dentin compared to ethylenediamine tetra-acetic acid (EDTA) and orthoorthophosphoric acid 37 % (H3PO4) for cementing posts with dual cure resin cement.</div></div><div><h3>Material and methods</h3><div>The resin cements employed were dual-cure resin cement RelyX ARC with previous Single Bond Universal adhesive (ARC/SBU) application, and self-adhesive resin cement RelyX U200. A fifty-four bovine incisor roots were prepared for GFP cementation and randomly divided into six groups according to the type of cement and dentin pre-treatment: 1) U200: no previous treatment; 2) EDTA-U200: pretreatment with 15 % EDTA for 3 min; 3) DTPMP-U200: pretreatmentwith 15 % DTPMP for 3 min; 4) H3PO4-ARC: 37 % orthophosphoric acid for 15s + SBU; 5) EDTA-ARC: 15 % EDTA for 3 min + SBU; and 6) DTPMP-ARC: 15 % DTPMP for 3 min + SBU. The roots (n = 6 per group) were sectioned into disc specimens of 1 mm (thickness) and subjected to PBS at 24h and after aging by <em>Clostridium histolyticum</em>. Additionally, root treated with each pre-treatment, without the application of adhesive or cement, disc specimens were subjected to scanning electron microscopy (SEM) to analyze the dentin surface conditioning pattern (n = 3)<strong>.</strong> Data were analyzed by two-way ANOVA and Tukey's test (p &lt; 0.05).</div></div><div><h3>Results</h3><div>In PBS, DTPMP-U200 and DTPMP-ARC (p &lt; 0.001) presented the highest bond strength after aging. The DTPMP etching pattern showed intense etching with mineral maintenance, while EDTA and H3PO4 showed greater exposure of collagen fibrils.</div></div><div><h3>Conclusions</h3><div>Treatment using 15 % DTPMP as an intraradicular dentin conditioner before luting glass-fiber posts provides bonding stability and potential for therapeutic remineralization.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"138 ","pages":"Article 103931"},"PeriodicalIF":3.2,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168975","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}
引用次数: 0
Novel polymer – Carbon nanotube composite coating for steel protection
IF 3.2 3区 材料科学
International Journal of Adhesion and Adhesives Pub Date : 2024-12-20 DOI: 10.1016/j.ijadhadh.2024.103930
Mostafa A. Shohide
{"title":"Novel polymer – Carbon nanotube composite coating for steel protection","authors":"Mostafa A. Shohide","doi":"10.1016/j.ijadhadh.2024.103930","DOIUrl":"10.1016/j.ijadhadh.2024.103930","url":null,"abstract":"<div><div>The main perspective of this research is to prepare a high-performance, low-cost, efficient protective coating. This has been achieved by using asphalt cement together with polyester as a source of hydroxyl groups by mixing ratio 4:1, forming a mixed polyol (MP). The hydroxyl number of MP was determined, and then MP reacted with the calculated amount of methylene diphenyl diisocyanate (MDI) according to the chosen NCO/OH molar ratio (1.3/1). Before the coating was formulated by a solvent, CNTs were added in different ratios (0.25, 0.5, 0.75 and 1.0) % of the coating weight, forming a protective coating named as asphaltic polyurethane (AsPU-CNTs). The prepared coatings were applied to the steel surface and then evaluated. The obtained results of the study detected that the optimum CNTs percent for enhancing the physic-mechanical and protective performance of the coating is 0.75, as follows: Drying time decreased by 35 % as compared with the control sample (without CNTs); meanwhile, both Dry Film Thickness (DFT) and adhesion strength increased by 10 % and 54 %, respectively. Blending AsPU with 0.75 % CNTs enhanced the hydrophobicity by increasing the contact angle of the coating by 49 %. Abrasion and fire resistance were improved by 17 % and 56 %, respectively. Lastly, the resistance of the coatings was changed from fair to excellent for both chemicals and crude oil.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":"138 ","pages":"Article 103930"},"PeriodicalIF":3.2,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168976","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}
引用次数: 0
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