Abstract Although the wood adhesive uses cellulose as a cheap and bio-degradable reinforcing agent, the usage is restricted because of its inability to enhance tackiness and adhesion compared with conventional wood adhesives. In this study, microcrystalline cellulose (MCC) incorporated polyvinyl alcohol (PVA) was prepared by blending in water. The availability of free hydroxyl groups in MCC and PVA

Abstract Rock asphalt can be used feasibly to toughen oil-well cements. However, the interface between non-hydrophilic rock asphalt and cement is poor, which reduces the overall mechanical properties of the composites. Therefore, in this study, the sol–gel method was used to synthesise dicalcium silicate (C2S), which was applied as a coating on the surface of rock asphalt to improve its interfacial

(2020). Correction. Journal of Adhesion Science and Technology. Ahead of Print.

Abstract Polydimethylsiloxane (PDMS) is a hydrophobic elastomer commonly used for microfluidic fabrication. PDMS has to be modified to improve its hydrophilicity and thus inhibits non-specific protein adsorption. This work evaluates the modification materials for the development of microfluidic cell-based immunofluorescence (IF) assay. In cell-based IF assay, PDMS is modified not just to inhibit the

Abstract For decades, there has been no proper thermodynamic definition of icephobicity. Some claim icephobic properties at an adhesion lower than 100 kPa, whereas others claim it when the accretion of ice is significantly prolonged. Herein we propose to use a terminology based on the type of frozen water deposition and its physical behaviour, separating ice and snow in adhesion and accretion. This

Abstract Creating superhydrophobic materials that effectively protect metal from corrosion would bring great benefits for human safety and national economy. However, most of these materials suffer from poor anti-corrosion and liquid repellence which severely restrict their actual applications. Recently, the slippery liquid-infused porous surface (SLIPS) was proposed to address the problems of metal

Abstract A novel phosphorus-nitrogen-contaning polyol (BHAPE) was synthesized from formaldehyde solution, 2, 2'-iminodiethanol and diethly phosphite by typical Kabachnik-Fields reaction. Reactive polyurethane hot melt adhesives with hydrolysis resistance and enhanced flame retardant properties (HMPURs) were prepared from poly (1, 4-butylene adipate), poly (carbonate diol), poly (tetramethylene ether

Abstract In order to study the influences of microstructures on corrosion behavior of double-side friction stir welded 6082Al thick plate. The corrosion behavior was firstly clarified by potentiodynamic polarization and exfoliation corrosion (EXCO) tests. The microstructures before and after corrosion were identified by optical microscopy (OM), SEM and transmission electron microscope (TEM). The results

Abstract The spirodioxynaphthalene preussomerin G, obtained from the fungus Pyrenochaetopsis sp. T1-41 (Plesosporales), was evaluated as a corrosion inhibitor in API 5L X70 steel samples. According to the electrochemical impedance spectroscopy and polarization curves analysis, the natural product showed good corrosion inhibition properties under static conditions in two corrosive media. The maximum

Abstract In the present work, mechanical and microstructural properties of friction stir welded similar DP600 steel were investigated. The sheets were butt welded with a single pass and three different rotational speeds such as 700, 800, and 900 rpm. The other parameters such as the tool traverse speed, tool tilt angle, and plunge depth were kept constant (50 mm/min, 2°, and 0.2 mm, respectively).

Abstract This study evaluated the effect of thickness and photo-polymerization distance on flexure strength of two bulk fill resin composites. In total, 96 rectangular-shaped resin composite bars were divided into eight experimental groups (n = 12/group) according to the three experimental factors; Factor 1: Material (X-tra fil and Admira Fusion X-tra), Factor 2: Thickness (2 mm and 4 mm) and Factor

Abstract The purpose of the present study is to evaluate the impact of simplified ethanol-wet bonding (EWB) and hydrophobic coating (HC) on the three adhesives. We collected 105 fresh human molars and randomly divided them into three groups according to the three types of adhesives: Single Bond (SB), Gluma Comfort Bond (GB), and Tetric N-Bond (TB). Then, each group was further divided into five subgroups

Abstract Cu–30Zn plates were friction stir processed at a rotational speed of 1120 rpm and a traverse speed of 50 mm/min. Two kinds of samples were produced. The first sample was friction stir processed without using a secondary phase. In the case of the second sample, Al2O3 particles were incorporated into the Cu–30Zn plates to produce a surface nanocomposite. In the absence of Al2O3 particles, the

Abstract Chemical and electrochemical techniques were used to evaluate the effect of expired paracetamil–Zn+2 systems (PC–Zn+2) as potential nontoxic inhibitor for the dissolution process of iron in 2.0 M sodium chloride corrosive solution. The chemical techniques used in this work are gravimetric, thermometric and atomic absorption spectroscopy (AAS), whereas the electrochemical techniques are open

Abstract Different methods were used to treat the fiber posts and root canals, and evaluated their influence on the bond strength of fiber posts. After thirty extracted human, single-rooted premolars were endodontically treated and post space was prepared in each tooth with post drills, they were randomly assigned into nine groups with 33 fiber glass posts. Different treatment methods for fiber posts

Abstract Objective Radiotherapy (RT) beams are proved to have detrimental effects on dental tissues. Aim of the present study was to evaluate the microtensile bond strengths of different modes of universal adhesives on RT-effected dentin. Methods: One hundred and twenty premolars of patients who had not diagnosed with any systemic disease and 120 premolars of patients who had undergone >50 Gy (Gray)

Abstract The corrosion inhibition efficiency (η%) and its passivation mechanisms of tin in 0.2 M malic acid by two different types of potential inhibitors, boiled red onion skin extracts (BROE) and molybdate (MoO4 2−), were examined and compared. The influence of the two inhibitors was evaluated by using the electrochemical polarization and the electrochemical impedance spectroscopy (EIS) methods.

Abstract Ceramic-based conductive coatings were prepared by sol–gel method with artificial graphite (CGM) as conductive fillers and methyltrimethoxysilane (MTMS) and silica sol as dispersion medias. The graphene (Gr) and carbon black (CB) were added to improve the properties of the resultant coatings. The results showed that the electrical conductivity and thermal stability of coatings were improved

Abstract Using a Viskomat XL mortar rheometer, parameters related to the rheological properties of machine-sprayed mortar were studied, and the effects of cement, fly ash (FA), and additives such as hydroxypropylmethylcellulose (HPMC) and starch ether (SE) on the rheological properties of cement mortar were studied. The results show that τc , Δτ, g, and h can be used to characterize the rheological

Abstract A novel UV/moisture dual-curable polyurethane resin has been synthesized via a two-step process. In the first step, methoxysilane-modified polyether polyol (SPOL) was prepared through the thiolene click reaction between sulfhydryl group in (3-mercaptopropyl)trimethoxysilane (KH590) and vinyl groups in polyether polyol. In the second step, the obtained SPOL was reacted with hydroxyethyl methacrylate

Abstract Since traditional nonyl phenyl type nonionic surfactants have been known as destructive to the ecosystem, sorbitan nonionic surfactants (Tween 20, 40, 60 and 80) were used to make acrylic emulsion type pressure sensitive adhesives (PSA), and the type of effects they have on the adhesive properties were investigated. Also, their adhesive properties were compared with those synthesized using

Environmentally friendly fabrication of engineered bamboo lumber is enabled by the application of renewable, formaldehyde-free bio-adhesives. In this study, protein-based adhesives made from pig blood (PB) were developed for this purpose. PB was modified by alkali (NaOH) and glutaraldehyde into either alkali-modified pig blood adhesive (APB), glutaraldehyde-modified pig blood adhesive (GPB), or al

Photo-cured adhesives based on methyl methacrylate (MMA) are common, but MMA has a low molecular weight and low viscosity which is not ideal in some situations. The addition of high molecular weight of diurethane dimethacrylate (UDMA) is an attractive proposition as it increases viscosity and reduces photo-cure times. Photo-cured blends with 30, 40, 50, 60, and 70 wt.% UDMA in MMA plus camphorquinone

The inhibition effect of extracts obtained from the commercially insignificant, perennial and overgrowing plants in Tunisia such as Dwarf palm (DP) and Cynara cardunculus (CC) plants leaves against St37 steel corrosion in 15% H2SO4 has been investigated with weight loss experiments (WL) and classical electrochemical methods. The investigations were conducted at the various concentrations of studied

The aim of this study is to enhance the coating adhesion strength by optimizing the air plasma application parameters. Air-plasma treatment parameters were selected as working distance, treatment speed and pressure, while material type parameters were determined as low mean density fiberboard (MDF-1) and high-density mean fiberboard (MDF-2). Due to the low adhesion strength in water-based paint applications

Corrosion wreaks havoc on our properties, our lives, and environment. So, prevention of corrosion is of the utmost importance. Inorganic inhibitors are used to prevent corrosion, but these are toxic. Therefore, environment-friendly inhibitor is necessary. Green corrosion inhibitors are a probable solution to this. Their demand both environmentally and economically, is increasing. This review article

The corrosion inhibition effect of di[(4-phenylimino)-4-diethyl salicylaldehyde] ether (L1) and di[(4-phenylimino)-2,6-diacetyl pyridine] ether (L2) as Schiff bases on carbon steel X48 in 1 M HCl were examined with gravimetric measurement, Tafel polarization and electrochemical impedance spectroscopy (EIS). It was observed that the two compounds L1 and L2 act as greatly corrosion inhibitors. The potentiodynamic

This study aims to investigate the effects and contributions of different factors, including aggregate source and shape, asphalt type and aging, and moisture condition, on the interfacial adhesion of aggregate-asphalt system. Self-developed spherical aggregates were used to control the variable, and a quantifiable boiling test was proposed to conduct on various conditions. Properties and shape of mineral

The effect of droplet dynamics on electric output of a PVDF (Polyvinylidene fluoride) cantilever is investigated through conducting in-laboratory experiments towards the raindrop energy harvesting (REH) applications. The droplet-substrate interaction affects the voltage output by several key factors, such as the droplet diameter, the impact velocity and the regime transition of droplet dynamics. The

This study aimed to evaluate the depth of cure (DC), bond strength (BS), failure mode (FM) and nanoleakage (NL) of restorative systems containing low viscosity bulk fill, regular viscosity bulk fill and conventional composites in a 3 D dentin cavity model. Six restorative systems: [Adhesive: Ambar Universal/Composite resins: Opus Bulk Fill Flow – OBFF, Opus Bulk Fill – OBF and Liss (FGM)] and [Adhesive:

The aim of this study is to examine the corrosion initiation and evaluate the effect of N,N′-dimethylaminoethanol (DMEA) as an organic corrosion inhibitor on the chloride threshold value for the corrosion of steel reinforcement in simulated concrete pore solution. The corrosion potential (Ecorr) measured by open-circuit potential (OCP) and the corrosion current (Icorr) obtained by linear polarization

Organic-inorganic hybrid coatings were developed via a sol-gel method using hexagonal boron nitride (h-BN) as a ceramic filler material incorporated into a polymeric matrix. To investigate the effects of h-BN on the properties of polymer-based coatings, parameters such as hardness, coefficient of friction, and hydrophobicity were investigated. Colloidal silica (CS), methyltrimethoxysilane (MTMS), water

In this work, the temperature alternating load (TAL) with four cycles is performed to the 5A90 Al-Li alloy T-joint produced by dual laser beam bilateral synchronous welding (DLBSW). The grain details, stripping strength, fracture micro-morphology and elemental composition of the samples are analyzed by optical microscope, self-designed specific fixture, scanning electron microscopy (SEM) and energy

To evaluate the microtensile dentin bond strength (BS) and dentin-adhesive morphology of three self-etching bonding systems and three universal adhesives applied in self-etching mode. Four single-step adhesives: G-Premio BOND (GPB), Bond Force II (BOF), Prime&Bond Active (PBA), and Adhese Universal (ADU); and two two-steps adhesives: Clearfil SE Bond (CSB) and Clearfil SE Bond 2 (CS2) were tested.

This study evaluated the effect of the number of specimens in a furnace during the firing of porcelain-zirconia (Y-TZP) discs on their biaxial flexural strength. Eighty bilayer disc-shaped specimens (∅: 15mm; thickness: 1.2 mm, ISO 6872) of zirconia (Vita In-Ceram YZ Cubes/Vita) and porcelain (Vita VM9) ceramics, were prepared and divided into four groups (n = 20) according to the number of specimens

The addition-curable silicone rubber (ASR) is a packaging material widely applied in the LED encapsulation. However, due to low surface energy, the silicone rubber has the poor adhesion to different substrates, such as copper and PPA. In this study, three silicone adhesion promoters, EBSiO, ESiO and BSiO were synthesized via non-hydrolytic dealcoholization reaction. The molecule structure of adhesion

It is of great significance to analyze the influence mechanism of MIG welding parameters during thermo-mechanical coupling to improve the MIG welding process. In this paper, the Python script and the birth and death element method are used to realize the transient growth of a weld, the moving load of the welding heat source was realized by a Fortran subroutine, and a thermo-mechanical coupling model

The objective of this study was to compare bond strengths between composite and dentin using different adhesive systems and to assess the influence of the experimental unit during thermocycling. Ninety recently extracted human molars were selected, and the occlusal third of each crown was removed. The teeth were divided into 15 groups (n = 6), according to the type of adhesive (1, 2, or 3 steps), the

Inspired by mussel-adhesion phenomenon in wet environment, polydopamine (PDA) was tried in recent research reports to improve the dentin adhesive interface with better strength and durability. The aim of this study was to comparatively evaluate the effect of PDA incorporated dentin adhesive systems and conventional adhesive systems on degree of conversion (DC), resin dentin bond strength (SBS), durability

Okoume wood is widely known for having an excellent unwinding capability. This hardwood species was used for tannin extraction in order to formulate for the first time tropical hardwood, an eco-friendly adhesive. The tannins were extracted from the bark, then mixed to hexamine for hardening. The system obtained showed high values of the elasticity modulus (3681 MPa; 3752 M Pa; 3894 MPa; 3971 MPa) according

The aim of this study was to compare, under varying conditions, the dentin shear bond strength (SBS) of three solvent-containing (acetone, ethanol, and water) self-etch adhesive with acetone-containing self-etch adhesive and ethanol/water-containing self-etch adhesive. One-hundred non-carious molar teeth were divided into 10 groups of ten specimens each. Kerr Optibond All-In-One (containing acetone

The adhesion force between the surfaces and various compounds is a fundamental feature that causes formation and modification of compounds and can be used to various applications. Adhesion force performs in several main ways that recognition and monitoring of this force would be very useful in the material study. Atomic force microscope (AFM) is a modern precisionist device which has been able to examine

In the present work, SnO2 was successfully coated on mild steel (MS) by the sol–gel method at different times (15,30,45 min). These coatings were developed to improve the performance of corrosion protection of MS in a 0.5 M HCl solution. The morphological and structural characterization of obtained electrodes was investigated with the help of characterized by Field-emission scanning electron microscopy

The effect of nanosilicates on the performance of natural rubber latex (NRL)-based adhesives was studied. For comparison, a reference filler (Kaolin clay) was included in the study. Natural leather was used as the adherend and the adhesive strength was recorded by measuring the peel strength. The results indicated that incorporation of nanosilicates imparted increased peel strength to NRL-based adhesives

We report an experimental study of the effect of visible and UV light irradiation on the wettability of films made by the assembly of SiO2 and α − Fe2O3 particles in the nanometer range. To optimize the conditions for the film formation (adhesion of nanoparticles on glass substrates) using a dip-coating technique, we have analyzed the colloidal stability through Zeta-potential measurements of the nanoparticles

The aim of this study was to evaluate the effect of chlorhexidine and/or ethanol application on the bond strength of two universal adhesive systems. 36 extracted human teeth were used in this study. Standard Class I cavities (4 × 3 × 3mm) were prepared and divided into two groups according to the adhesive systems used. Each group was subdivided into three subgroups to be treated with chlorhexidine

Protective coatings of the concrete surface against aggressive environments are constantly evolving. Given their diversity, the effectiveness of the latter becomes an important criterion for making the right among of a large commercialized variety, therefore, in recent years, several researchers have started research in this area and have proposed solutions to protect the surface exterior of concrete

The intent of this paper is to investigate the leaves extract of Hardwickia binata Roxb. (HBL) as corrosion inhibitor for mild steel in aerated 1 M HCl and 0.5 M H2SO4 solutions using weight loss and electrochemical techniques. Increasing the immersion period of the system enhanced inhibition efficiency of HBL extract in 1 M HCl, but decreased efficiency in 0.5 M H2SO4. The stability and durability

Following composite restorations, there is an obvious need for repair of them, which can be a challenging procedure in the clinical setting. This study aimed to assess the effect of surface treatment of composite with cold plasma spray (CPS) on microshear bond strength (µSBS) of repair composite in comparison with other surface treatments. A total of 120 discs (2 × 9 mm) were fabricated of Filtek Z250

Aqueous extract of Citrus reticulata peels (CRE) mediated synthesis of nickel nanoparticles (CRE-NiNPs), characterization and application of the obtained composite as microbial and acid corrosion inhibitor is reported. The CRE-NiNPs were stable, non-agglomerated, monodispersed, round-shaped and of 40 − 55 nm size. With surfaces rich in O and N sites, CRE-NiNPs efficiently adsorbs on and inhibits X80

The purpose of this study is to investigate the effect of nitrogen plasma treatment on the shear bonding strength (SBS) of polyetheretherketone (PEEK) to resin cements. A total of 240 PEEK specimens were subjected to different duration of nitrogen plasma treatment for 0 min, 15 min, 25 min, 35 min respectively. The surface topography was observed by a scanning electron microscope (SEM). In addition

The fracture failure of a bonded structure is closely related to the service temperature. In this study, based on the failure criterion of an adhesive structure at room temperature and considering the influence of temperature sensitivity on an adhesive structure, ISR-7008/aluminum alloy adhesive joints in the vehicle service temperature range (−40–80 °C) were taken as examples to establish the full

The Pine Leaf tree is a high altitude plant that is mostly found in the Himalayan region. The pine leaf ash contains the hard compound of Si, Ca, K, Mg, and Fe which make it an alternative cost-effective reinforcement material for composites. In this paper, the surface composite of aluminum alloy reinforced with Pine Leaf Ash was developed by friction stir process (FSP) with varying tool feed rate

Graphene oxide (GO) integrated composite coatings were deposited on AZ91 magnesium alloys by the PEO (Plasma Electrolytic Oxidation) and the treatment which has a post-PEO hydrothermal process. For the first group samples, PEO was performed in the silicate/phosphate-based electrolyte including 5–10 µm in size the GO particles synthesized using the Tour Method. For the second group samples, after PEO

Corrosion inhibition and control are of great significance in metal industries due to the economic benefits. In recent years, the utilization of plant extract as an alternative to the chemical counterparts has advocated the concept of a green approach that is eco-friendly nature and efficient as corrosion control agents. Literature review reveals that the inhibition efficiency of a plant extract could

This paper focuses on the effect of cyclic hygrothermal aging on the mechanical behavior of the adhesive bonded aluminum joints. The adhesive joint specimens were immerged in the temperature/relative humidity set at 80 °C/95％ and −40 °C/30％ for cycle experiments for un–aged, 20, 40, and 60 cycles, respectively. Joint bonding angles were set to 0°, 15°, 30°, 45°, 60°, 75° and 90°. The stress modes of

The research on reversible adhesives has attracted upsurge in recent years. Reversible adhesives have a wide range of potential applications, including aerospace, military equipment, biomedical, and packaging protection. In this paper, reversible mechanisms, integrated into adhesives with self-repair behavior, are based on covalent and non-covalent bonds, and the most popular modes of action of these

This in vitro study evaluated the volumetric change (VC) and gap formation (GF) in Class V composite restorations after light-curing and aging. Thirty-six extracted human premolars were used. Standardized Class V cavities (3 mmx3 mmx1.5 mm) were prepared. G-Premio Bond was applied. The teeth were randomly assigned into six groups (n = 6): Group FZ: Filtek Z250(microhybrid), Group SP: SDR Plus Bulk

Steel is usually cleaned by acid solutions before its application in various industries. Such a treatment increases the possibility of steel corrosion, making the use of inhibitors in the cleaning bath indispensable. On this basis, the introduction of novel, efficient corrosion inhibitors is always of great importance. In the present research, three series of hydrazone Schiff bases were synthesized

5456-H112 aluminum alloy plates with a thickness of 20 mm were joined using floating-bobbin tool friction stir welding at different travel speeds from 28 to 160 mm/min and a fixed rotational speed of 90 rpm. The results of microstructural analysis indicated that the grain size is decreased at a constant travel speed (at each of the speeds of 28, 40, 56, 80, 112, and 160 mm/min), from the retreating