Advanced Materials Research Journal Impact Factor & Information

Publisher: Trans Tech Publications

Journal description

Current impact factor: 0.00

Impact Factor Rankings

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5-year impact 0.00
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ISSN 1022-6680

Publisher details

Trans Tech Publications

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    • On authors personal or authors institutions server
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    • Articles in some journals can be made Open Access on payment of additional charge
    • Publisher last contacted on 27/04/2013
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Surface migration of additives in a surfactant-loaded natural rubber vulcanizate is investigated as function of ingredient loading. Rubber sheets are compounded according to an L12 orthogonal array using Taguchi design of experiment, where ingredients are treated as factors varied at low and high loadings. Migration experiments are performed by placing the rubber sheets in a natural convection oven at 50°C for 32 days. Weight loss due to removal of migrated additives from surface of rubber sheets is monitored with time. The maximum amount and estimated rate of additive migration are determined from weight loss curves. Attenuated total reflection – Fourier transform infrared (ATR-FTIR) spectroscopy and optical microscopy are used to characterize the chemical structure and surface morphology of rubber sheets during additive migration. Mean effects and analysis of variance (ANOVA) show that high loadings of used oil, paraffin wax, stearic acid, glycerol monostearate (GMS), and cocamide diethanolamide (Coca DEA) increase the amount of maximum migration and migration rate of additives. On the other hand, high loadings of mercaptobenzothiazole (MBT), diphenylguanidine (DPG), mercaptobenzothiazole disulfide (MBTS), sulfur, and zinc oxide (ZnO) decrease the maximum amount of additive migration and migration rate. Used oil has the highest effect on these responses, while sulfur and the accelerators have the least effect. By comparing the of ATR-FTIR spectra of cleaned and migrated rubber surfaces, almost all soluble additives are identified to have migrated to the rubber surface.
    Advanced Materials Research 10/2015; 1125:64-68. DOI:10.4028/
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    ABSTRACT: The intensive usage of polyethylene (PE) films on packaging applications has created major problems in terms of plastic waste treatment and disposal. To reduce its environmental impact, PE containing pro-oxidants (oxo-biodegradable PE) has been developed which generates carbonyl-containing degradation products when subjected to thermal and/or UV treatment. In this study, low-density PE films with varying colorants as well as thickness and pro-oxidant loading were thermally aged at 50 °C under extended time periods. Degradation responses such as tensile strength and carbonyl index (CI) were monitored with thermal aging time. After 1008 h of thermal exposure, presence of white colorant containing titanium dioxide enhanced the degradation of films as manifested by reduction in tensile strength and increase in CI. It was also found out that yellow colorant containing aromatic amine stabilizer retarded the degradation of films during thermal aging.
    Advanced Materials Research 10/2015; 1125:235-239. DOI:10.4028/
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    ABSTRACT: Polyvinyl Alcohol (PVA) is a biocompatible polymer with high mechanical strength used in the biomedical industry. While its features have biological properties, it lacks cell recognition sites that affect the entirety of cell proliferation and movement. To address this issue, gelatin (GEL) is added to the system to increase biomimetic properties. PVA and GEL nanofibers, produced from electrospinning, could provide new characteristics for tissue engineering applications. At present, aqueous solution of N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), and many other hazardous organic solutions are used in fabricating both PVA, GEL and PVA-GEL nanofibers, but it poses a great threat on sites that the solvent was unable to evaporate, affecting cell viability and motility. In this study, a new solvent system of deionized water, formic acid and glacial acetic acid was used to replace the current toxic solvent system utilized in electrospinning such polymers. Increasing amounts of formic acid and deionized water decreased further the fiber diameter of the PVA-GEL nanofibers. Further refinement in solution (PVA:GEL ratio) and process parameters (tip-to-collector distance and flow rate) produced much finer nanofibers, leading to a decrease in fiber diameter distribution. It is conclusive that a new alternative solvent system can be used in electrospinning PVA-GEL nanofibers that are non-toxic and exhibits much lower fiber diameter (≈20 nm) than the conventional solvents used before.
    Advanced Materials Research 10/2015; 1125:406-410. DOI:10.4028/
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    ABSTRACT: Sorption studies in aqueous media of pro-oxidant-loaded polyethylene (PE) films from commercial plastic bags are conducted. A total of 6 types of plastic bags are tested at three levels of thickness and two levels of color (transparent and opaque white). PE films are immersed in deionized water, acidic, and alkaline solutions at 60 °C. Sorption curves show that once the maximum uptake is reached, the weight change of PE films started to decline. The films showing the highest weight uptake and loss are observed in opaque films in alkaline solution. Analysis of variance (ANOVA) shows that during water immersion, both maximum weight uptake and loss are affected by colorant additive, with opaque films yielding the highest weight uptake and loss. During acid immersion, transparent films have significantly higher weight uptake than opaque films. The weight uptake during acid immersion is only affected by film thickness, with the thickest films showing the lowest weight uptake. Similar to results in water immersion, thickness is found to be insignificant to weight uptake and loss of PE films during alkali immersion. Meanwhile, colorant additive is significant to both weight uptake and loss for all films immersed in different solutions.
    Advanced Materials Research 10/2015; 1125:240-244. DOI:10.4028/
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    ABSTRACT: Rheometric properties of rubber compounds are usually monitored with time during the course of vulcanization at constant temperature. The measured vulcanization characteristics of rubber compound are used for quality control and evaluation of raw materials and product formulations. With the high number of ingredients used in typical formulations, it is important to identify ingredients which significantly affect the vulcanization characteristics of a rubber compound. This study reports the vulcanization characteristics of a natural rubber compound at 60 °C as function of ingredient loading. Rubber sheets are compounded according to a 212-8 fractional factorial design of experiment, where ingredients are treated as factors varied at low and high loadings. Vulcanization curves, which are time plots of elastic torque S’, viscous torque S”, and tan δ = S”/S’, are measured for each rubber sheet using a moving die rheometer. The following responses are then determined from the vulcanization curves for data analysis: minimum elastic torque ML, maximum elastic torque MH, torque difference ∆S = MH – ML, scorch time ts1, cure time t’90, cure rate index CRI = 100/ (t’90 – ts1), S” and tan δ values at ML and MH. Analysis of variance (ANOVA) shows used oil to be the main ingredient affecting vulcanization of the natural rubber compound (ML, MH, ∆S, ts1, S” at ML and MH), followed by sulfur (MH, ∆S, CRI), calcium carbonate CaCO3 (S” at ML, tan δ at MH) and diphenylguanidine DPG (ts1). High loading of used oil lowers the elastic and viscous response of the rubber compound, while increases the time for scorch. Increased loading of sulfur significantly enhances the elastic torque and cure rate of the compound. High loading of CaCO3 improves the viscous response, while DPG significantly shortens the scorch time of the rubber compound.
    Advanced Materials Research 10/2015; 1125:50-54. DOI:10.4028/
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    ABSTRACT: Nowadays there are many diagnostic methods for the detection of different defects in building structures. Destructive methods, which do not enable purposeful redevelopment action or a potential cause prediction of the defect without damage to the structure, are mostly used. Lock-in thermography is based on the modulation of the controlled heat flow, which impact on the diagnosed object. Heat (usually sinusoidal) wave penetrates inside the element and in the place of environmental change, ie. anomalies / deviations in the structure of the material of the tested object are reflected back to the surface. The paper focuses on the possibility of using lock-in thermography in the detection of various defects in building structures.
    Advanced Materials Research 08/2015; 1122(1):173-176. DOI:10.4028/
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    ABSTRACT: At present there are many diagnostic methods for the detection of different defects in building structures. Destructive methods, which do not enable purposeful redevelopment action or a potential cause prediction of the defect without damage to the structure, are mostly used. Pulsed thermography consists in rapid (pulse) external or internal heating of the element and the subsequent evaluation of the temperature field on the surface of the element with the thermal imaging camera. A pulse method is divided into the reflective and passes according to the arrangement of the heating source, object and thermal imaging camera. The surface temperature is changing rapidly, driven by pulse stimulation due to scattering of thermal wave, radiation and convection. The paper focuses on the possibility of using pulsed thermography in the detection of various defects in building constructions.
    Advanced Materials Research 08/2015; 1122(1):177-180. DOI:10.4028/
  • Advanced Materials Research 07/2015; 1115:341-344. DOI:10.4028/
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    ABSTRACT: Abstract. Infrared radiometric long-waved systems are widely used in various industries as well as in research and development. This long-waved system is the perfect tool for quick diagnosis of the state of the equipment, easy defect detection, which is reflected by higher temperatures due to increased friction and wear. Infrared radiometric long-waved systems are used especially in civil engineering, electrical engineering, metallurgy and many other industries. They are also used to optimize and improve of the production processes. The series of measurements using the infrared radiometric long-waved system in steel plant were carried out due to prepared research project. Images of temperature fields of ladles with liquid steel, cooled exhaust knee of electric arc furnace and ingot mould were obtained during solidification of steel ingot. Information about the state of wear of the refractory lining of the ladle, exhaust knee can be gained from obtained images. The obtained results can be used for more accurate numerical simulations of the process of casting and solidification of steel ingots.
    Advanced Materials Research 07/2015; 1127:23-29. DOI:10.4028/
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    ABSTRACT: This paper presents in detail the laser welding of a new mechatronic component belonging to the pressure sensors made by aluminium alloy AW2007. Due to very high reflectivity of aluminium alloys, fast oxidation, the absorption of gases from the surrounding medium, special difficulties arise at laser beam welding and most situations require appropriate surface pretreatment. The paper presents an experimental study on the influence of welding parameters on the seam quality for the aluminium alloy AW2007. In addition of the study regarding the influence of welding parameters, like laser power and welding speed, we conducted an analysis on the influence of the initial temperature of the material on the quality of the weld. Besides these aspects, the paper presents a constructive solution for a device used to optimize the laser welding process of the sensor.
    Advanced Materials Research 07/2015; 1114. DOI:10.4028/