International Journal of Adhesion and Adhesives最新文献

{"title":"Mechanical and failure behaviors of adhesively bonded dissimilar materials joints incorporating bio-inspired morphological irregularities","authors":"","doi":"10.1016/j.ijadhadh.2024.103865","DOIUrl":"10.1016/j.ijadhadh.2024.103865","url":null,"abstract":"<div><div>Adhesive dissimilar material joints between stainless steel grade 316L and polyethylene terephthalate glycol (PETG) plastic were examined, in which irregular interface morphologies inspired by natural sutures were incorporated. The joint interfaces exhibited various teeth-like, non-repetitive zigzag patterns based on a pseudo-randomization method and sutural interdigitation index. Effects of their irregularities on mechanical and failure characteristics of adhesive butt joints were studied by means of experiments and FE simulations. The cohesive zone model, Drucker-Prager plasticity model and ductile failure criterion were applied for the interface and PETG, respectively. Predicted load-displacement curves of joints with different teeth profiles were well validated. The degree of irregularity became higher to 20 %, 40 %, and 60 %, the joint strengths decreased by 1.47 %, 5.39 %, and 11.95 %, while the total energies to failure increased by 110.74 %, 129.33 %, and 161.23 %, accordingly. More inhomogeneous morphologies led to earlier local damage initiation, but enhanced damage evolution range by impeding abrupt joint separation. Smaller teeth angles provided higher joint strength, whereas significant declines of bonding strength were observed by too acute teeth angle due to excessive stress localization and resulting teeth breakage. The teeth angle of 45° enabled the superior joint performance owing to a proper combination of interlocking and large adhesive force under shear stress state. Finally, a key insight for designing an optimal dissimilar joint with morphological irregularities was provided.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539033","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":"Bonding of beech wood to mortar with a novel epoxy hybrid-adhesive: Performance in dry and wet conditions","authors":"","doi":"10.1016/j.ijadhadh.2024.103868","DOIUrl":"10.1016/j.ijadhadh.2024.103868","url":null,"abstract":"<div><div>Composites made of timber and cementitious materials require a rigid connection to exploit their full composite action, which can be achieved by using full-surface adhesive bonding. In this work, we investigated a novel hybrid-adhesive system consisting of a silane-terminated polyurethane (STP) and epoxy resin for the bonding of beech wood timber to fresh mortar for use in timber-mortar composites (TMC). The mechanical performance and the influence of moisture on TMC produced by the wet-in-wet process (fresh mortar) was investigated and compared to the bonding of prefabricated mortar (prefab process). The STP-epoxy hybrid-adhesive showed a suitable bonding performance of beech wood to both, fresh mortar and precured mortar with median compression shear strengths of 4.57 MPa and 6.07 MPa, respectively. The fracture pattern showed the strength of the near-surface layer in the mortar, close to the adhesive, being often decisive for the bond performance. The same failure mode predominated in TMC beams after 3-point bending tests. The stability of the composite upon the influence of moisture is especially challenging when using beech wood due to its low dimensional stability. Thus, the moisture stability of the bond was investigated by compression shear tests after water immersion. It showed an improved water stability compared to composites bonded with an epoxy resin. Nonetheless, a clear reduction in bond strength compared to the dry state was observed, with delamination of 25 % of the wet-in-wet and 17 % of the prefab specimens during water immersion. Furthermore, it was seen that the adhesive open laying time played a decisive role in the wet-in-wet produced specimens influencing both, dry and wet shear strength.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560704","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}

{"title":"Study on the fatigue properties of SPR-bonded aluminum-steel sheet joints","authors":"","doi":"10.1016/j.ijadhadh.2024.103864","DOIUrl":"10.1016/j.ijadhadh.2024.103864","url":null,"abstract":"<div><div>This study deals mainly with the influence of adhesive layer on the fatigue behavior and fretting of self-piercing riveted (SPR) joint joining differing thicknesses of AlSi10MnMg aluminum and DP590 steel sheets in lap shear geometry. Fatigue life, failure modes, crack propagation and fretting behaviors of the SPR and SPR-bonded joints were investigated and compared. The results showed that the static strength and fatigue life of SPR-bonded joints were significantly enhanced than that of SPR joints, but the fatigue failure mode of SPR-bonded and SPR joints differed. The SPR-bonded joints all failed in a rivet tail pull-out mode at all tested loads, which accompanied with small cracking in the aluminum sheet in contact with the rivet tail at lower test load. However, the failure mode of the SPR joints shifted from the aluminum sheet cracking to rivet tail pull-out as the fatigue test load increased. And during the aluminum sheet cracking failure, the fatigue crack originated from the faying interface of aluminum and steel sheet at the vicinity of the rivet shank and propagated along the width direction of aluminum sheet. Fretting wear analysis showed that the overall extent of fretting decreased and the location of fretting areas varied due to the adhesive bonding. Fretting of SPR joints mostly existed at the faying interface between aluminum and steel about 1.5 mm away from the rivet shank and resulted in fatigue crack initiation, while the fretting region of SPR-bonded joints shifted to the faying interface between rivet tail and aluminum sheet.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533831","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":"Comparison of the microtensile bond strength of direct and indirect resin restorations in the cervical region","authors":"","doi":"10.1016/j.ijadhadh.2024.103863","DOIUrl":"10.1016/j.ijadhadh.2024.103863","url":null,"abstract":"<div><h3>Objectives</h3><div>To evaluate <em>in vitro</em> the adhesion system of direct and indirect composite resin restorations in enamel and dentin, in cavities made in the cervical region using microtensile bond strength (μTBS) and to observe the most recurrent types of failure in the different groups.</div></div><div><h3>Methods</h3><div>Standardized cavities were made in the line of the cementoenamel junction (CEJ) in 36 selected human premolars, which were randomly divided into 2 groups. In the Indirect Restorations (IR) group, indirect restorations were cemented in composite resin, using a universal adhesive and dual resin cement, performing selective enamel etching (SEE). In the Direct Restorations (DR) group, direct restorations were made in composite resin, performing SEE and bonding with the universal adhesive. Each specimen was sliced into sections measuring approximately 1 mm², with enamel and dentin adhesion divided into subgroups DRe, DRd, IRe, and IRd. The sections were subjected to the μTBS test to assess bond strength in both enamel and dentin, comparing direct and indirect restorations in the cervical region. The types of failure in each group were also observed.</div></div><div><h3>Results</h3><div>There was no statistically significant difference in μTBS between the DRe and IRe groups (p = 0.314) and also between the DRd and IRd groups (p = 0.145). There was a predominance of adhesive failures.</div></div><div><h3>Conclusions</h3><div>The bond strength of composite resin restorations was found to be equivalent in enamel and dentin, whether applied directly or indirectly. There was a predominance of adhesive fractures followed by cohesive resin fractures.</div></div><div><h3>Clinical significance</h3><div>The choice between direct and indirect restorations in the cervical region may consider patient preferences, but with caution, as clinical factors such as operator skill, specific tooth conditions and case complexity are crucial, and both techniques exhibit comparable bond strength.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533829","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 3D printed PET physicochemical properties to prevent bacterial adhesion: Phenolic compound-based approach","authors":"","doi":"10.1016/j.ijadhadh.2024.103847","DOIUrl":"10.1016/j.ijadhadh.2024.103847","url":null,"abstract":"<div><div>Polyethylene terephthalate (PET) has emerged as a versatile and widely used polymeric material in the healthcare sector, particularly for medical device manufacturing, owing to its exceptional properties such as biocompatibility, high uniformity, and mechanical strength. However, the susceptibility of PET to bacterial adhesion remains a critical challenge in medical applications, potentially leading to serious complications for patients. In this study, we assessed, using the contact angle and scanning electron microscopy (SEM) techniques, the effectiveness of various phenolic compounds, including gallic acid (GA), tannic acid (TA), caffeic acid (CA) and epigallocatechin gallate (EGCG), in preventing the adhesion of <em>Staphylococcus aureus</em> and <em>Pseudomonas aeruginosa</em> to 3D printed PET surfaces. The results revealed that PET, initially hydrophobic (θ_w = 75.7 ± 0.56° and ΔGiwi = −52.17 mJ/m²), became hydrophilic after treatment with TA, GA and CA, enhancing its physicochemical properties. Additionally, GA demonstrated remarkable anti-adhesive efficacy against <em>S.aureus</em> with inhibition percentage of 97.4 %, whereas TA exhibited a high inhibition rate against <em>P.aeruginosa</em> (98.5 %). In contrast, PET remained qualitatively hydrophobic after treatment with EGCG, which showed limited anti-adhesive efficacy with a percentage of coverage by <em>S.aureus</em> and <em>P.aeruginosa</em> of 70.15 and 92.7 %, respectively. These findings contribute to the development of sustainable anti-adhesive surfaces for medical devices.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142555001","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":"Facile and green preparation of carbonaceous material-based wood bio-adhesives using hydrochar from hydrothermal carbonization of glucose with or without acrylic acid/acrylamide","authors":"","doi":"10.1016/j.ijadhadh.2024.103851","DOIUrl":"10.1016/j.ijadhadh.2024.103851","url":null,"abstract":"<div><div>To address the issues of formaldehyde emission, mildew, and easy combustion of traditional wood adhesives, this paper, for the first time, reported formaldehyde-free plywood bio-adhesives using carbonaceous material (hydrochar) generated from hydrothermal carbonization (HTC) of glucose with or without acrylic acid (AA) and acrylamide (AM). The highest wet shear strength of bio-adhesives (BD-G/AA-180) was 1.32 MPa, which meets the Chinese national standard GB/T 9846-2015 (≥0.7 MPa). It was found that functional groups (–NH₂ and –COOH) were abundant on the surface of hydrochar from co-HTC of glucose with AM or AA. The formation of covalent bonds (between components of bio-adhesives; between bio-adhesives and wood) <em>via</em> dehydration or esterification reaction was a key factor in improving wet shear strength during hot-press treatment. Unlike bio-adhesives developed from polysaccharides and proteins, these hydrochar carbonaceous material-derived bio-adhesives had excellent anti-mildew properties and flame resistance with help from ammonium polyphosphate. This work paves a new road to prepare green formaldehyde-free plywood bio-adhesives.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533948","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":"Thermally stimulated bio-acrylate based detachable adhesives with sustainable bonding-debonding design","authors":"","doi":"10.1016/j.ijadhadh.2024.103853","DOIUrl":"10.1016/j.ijadhadh.2024.103853","url":null,"abstract":"<div><div>The electronics and automotive industries utilize acrylic adhesives extensively. Their exceptional mechanical strength, accompanied by their permanent nature, renders recycling impracticable. Present work has successfully synthesized acrylate biopolymer based detachable adhesive, which is both eco-friendly and sustainable. Glycerol, from mustard oil, was oxidatively-dehydrated to synthesize acrylic acid, which along with dimethyl glyoxime was chain polymerized to obtain an eco-friendly acrylic based hot melt detachable adhesive (AAHMDA). Mechanical strength of prepared adhesive was tested through thermo-mechanical bonding-debonding cycles on glass, wood, and metal. In three tests of 0.2 g adhesive against specific applied stress on all surfaces, metal (1494.49 N/m²) and wood (1851.17 N/m²) remained intact for 2 h and 30 min. Maximum cleavage stress (applied weight) on glass, wood, and metal slides, using 0.2 g adhesive, was found to be 26503.61 N/m² (1200 g), 19824.71 N/m² (950 g), and 26328.24 N/m² (1300 g), respectively, when repeatedly tested for 15 cycles. Gel contents and water absorption capacity of sample were found at 99.79 % and 38.78 %, respectively. Prepared AAHMDA possesses the capability to create a robust mechanical bond that is readily detachable when heated, which makes it a cost effective adhesive. Owing to its strong bonding and simple detachment procedure, AAHMDA appears to have a promising future in materials research, sustainability initiatives, and changing industry demands.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554706","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":"Prediction of mass adhesive damage based on the Rousselier model: Experimental and numerical analysis","authors":"","doi":"10.1016/j.ijadhadh.2024.103852","DOIUrl":"10.1016/j.ijadhadh.2024.103852","url":null,"abstract":"<div><div>The study of the mechanical strength of adhesives remains an important area of research for researchers. These adhesives must be prepared in the form of mass test pieces to characterize them under different mechanical stresses. However, during the preparation of the test pieces several defects are likely to be present, namely air bubbles, cavities, or impurities. The behavior of the adhesive differs depending on the presence of one of these defects and, in most cases, the real behavior of the adhesive is not precisely known. For this purpose, several tests are necessary to have a close estimate of the adhesive's behavior. To numerically model the behavior of the adhesive it is necessary to consider the presence of these types of defects. This paper proposes a damage criterion based on the Rousselier model, which describes the damage due to crack growth from the presence of cavities in an adhesive, assumed as a ductile material. The proposed damage model was developed and implemented in a user-defined subroutine in the ABAQUS finite element code. Other damage models integrated into ABAQUS were used. In addition, the extended finite element method (XFEM) was used in the numerical simulations to study automatic damage modelling by the appearance and propagation of cracks in highly stressed areas. The main objective of this work is an analysis by the finite element method to determine the elastoplastic behavior coupled with the damage in the mass adhesive, considering the size, position, and shape of the defect (porosities) by the proposed models. Initially, experimental tests were carried out on mass specimens of adhesive to characterize the tensile response and to determine their mechanical properties depending on the position and size of the defect, which may exist in the specimen following its fabrication. The numerical results were validated by uniaxial tensile tests on the mass adhesive. Comparisons with the damage models integrated into ABAQUS have proven their effectiveness in predicting the behavior of the adhesive in the presence of a cavity.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533947","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 antibacterial effect of dental adhesives with DMAHDM by incorporating MPC monomer: A systematic review and meta-analysis of in vitro studies","authors":"","doi":"10.1016/j.ijadhadh.2024.103849","DOIUrl":"10.1016/j.ijadhadh.2024.103849","url":null,"abstract":"<div><h3>Objective</h3><div>This systematic review aims to analyze if the combination of MPC and DMAHDM can enhance the antibacterial potential of DMAHDM without impairing the adhesive system's bond strength.</div></div><div><h3>Methods</h3><div>A search was conducted on PubMed, Embase, Scopus, and Web of Science databases. Study selection was performed in two stages by two calibrated reviewers independently. The meta-analyses were conducted with the RevMan 5.4 software and evaluated metabolic activity (MA), lactic acid production (LA), protein repellent function (PRF), and dentin shear bond strength (DSBS) comparing DMAHDM vs. DMAHDM + MPC. The measure of effect was the mean or standardized mean difference. Quality assessment was evaluated with an adapted tool from a previous systematic review.</div></div><div><h3>Results</h3><div>The initial search resulted in 158 articles. Four articles were included in the final sample. The meta-analyses evidenced a statistically significant difference favoring the use of MPC to enhance DMAHDM's antibacterial potential for inhibiting MA (SMD, 3.74; 95 % CI, 2.66, 4.83), LA (MD, −1.24; 95 % CI, −1.42, −1.06), while providing protein-repellent function (MD, −5.38; 95 % CI, −6.35, −4.41). The addition of MPC had a negative effect on DSBS in comparison to DMAHDM alone (MD, −4.23; 95 % CI, −5.63, −2.83).</div></div><div><h3>Conclusions</h3><div>The addition of MPC to DMAHDM-containing adhesives enhances the antibacterial efficacy and provides protein-repellent function, but impairs the bond strength. Future studies should test the addition of 5 % MPC.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142417671","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":"The effect of urea-formaldehyde adhesive modification with diisocyanate-functionalized nanocellulose on the properties of particleboard","authors":"","doi":"10.1016/j.ijadhadh.2024.103850","DOIUrl":"10.1016/j.ijadhadh.2024.103850","url":null,"abstract":"<div><div>In this paper, a nanocrystalline cellulose (NCC) functionalized with 4,4′-diphenylmethane diisocyanate (MDI) was used as a modifier for urea-formaldehyde (UF) adhesive in particleboard production. The applied method of NCC functionalization with diisocyanate has not been previously studied in research on wood-based materials. Chemical structure of MDI-NCC evaluated with Fourier transform infrared spectroscopy (FTIR) demonstrated some significant changes indicating that the functionalization was effective. No change in crystallinity caused by the modification was noted based on the lateral order index and total crystallinity index. Hydrophilicity of NCC was reduced due to the functionalization with MDI. Based on the differential scanning calorimetry (DSC) results, it was found that the reactivity of the resin was improved by the addition of NCC, and moreover, the effect was even more noticeable when the MDI-NCC was introduced. Properties of manufactured particleboards such as density, water absorption and formaldehyde content were not affected by the resin reinforcement. In turn, the modification of NCC with MDI allowed to increase the strength and reduce swelling of the particleboards more significantly than in the case of a neat NCC. It indicates that application of diisocyanate-functionalized NCC has great potential for the use as the UF resin modifier in particleboard production.</div></div>","PeriodicalId":13732,"journal":{"name":"International Journal of Adhesion and Adhesives","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142417672","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}