Materials Literature
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비등온 TGA 실험방법을 이용하여 가교 사이트가 서로 다른 chlorine cure-site ACM 고무와 carboxylic cure-site ACM 고무 두 종류에 대하여 열분해 거동을 연구하였다. 분해 반응이 최대인 점의 온도는 모든 승온 속도에서 carboxylic cure-site ACM 고무의 열분해 특성이 상대적으로 더 안정함을 보여 주었다. Kissinger의 해석 방법에 의한 활성화에너지는 chlorine cure-site ACM 및 carboxylic cure-site ACM 고무에 대하여 각각 118.6 및 105.5 kJ/mol로 나타났으며,…
The effect of the G to D band intensity (IG/ID) ratio, percentage of Sp2 hybridization and percent of impurities on the electrical resistivity of nanocomposites reinforced with multi-walled carbon nanotubes (MWCNT) has been studied. The MWCNT were purified by reflux, selective oxidation, sonication and mixed oxidative…
In the present paper walnut particle reinforced composite was developed in an open mould. Walnut particle reinforced composite was prepared with epoxy matrix with 10-40 weight percentage (wt%) of walnut particles and the effect of the reinforcement of particles on the water absorption capacity and compressive strength…
STRENGTH COMPARISON OF JOINTS AT WINDOW FRAMESThe strength of joints with a wooden ring, which are protected by international patent was compared with the strength of tenon and dowel joints, and consequently the applicability and suitability for producing such window frames was established.The strength of different im…
Inhibition performance of Lornoxicam & Tenoxicam against corrosion of carbon steel in 1 M H 2 SO 4 solutions was investigated by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements. The inhibition efficiency increased with increasing inhibitor's concentration, but de…
Ceria based ceramic composite oxide materials such as Ce 0.9 Gd 0.1 O 2-δ -Ce 0.9 Y 0.1 O 2-δ and Ce 0.8 Gd 0.2 O 2-δ Ce 0.8 Y 0.2 O 2-δ were prepared by a simple chemical precipitation method for application in low temperature solid oxide fuel cells (LTSOFCs) as electrolytes. The precursor materials used in this synt…
In this work, nonlocal vibration of double of carbon nanotubes (CNTs) system conveying fluid coupled by visco-Pasternak medium is carried out based on nonlocal elasticity theory where CNTs are placed in uniform temperature change and magnetic field. Considering Euler-Bernoulli beam (EBB) model and Knudsen number, the…
Oriental Journal of Chemistry is a peer reviewed quarterly research journal of pure and applied chemistry. It publishes standard research papers in almost all thrust areas of current chemistry of academic and commercial importance. It provides a platform for rapid publication of quality research papers, reviews and ch…
글리세라이드의 지방산 사슬길이 및 구조적 차이에 따른 영향을 평가하기 위하여 팜오일에서 추출된 글리세롤과 palmitic acid, stearic acid등 사슬길이가 <TEX>$C_{12}{\sim}C_{18}$</TEX>인 지방산을 이용하여, mono, di, tri등 다양한 글리세라이드 구조를 가진 신규 분산제를 합성하였고, 이를 실리카 충진배합물에 적용하여 기존의 금속염 분산제와 비교평가 하였다. 실험결과, 글리세라이드 분산제는 기존의 금속염 지방산 분산제 대비 혼합고무 내 윤활효과가 낮아서 혼합고무의 점도는 높으나, 실리카 분산이 크게 향상됨을 확인하였다.…
Ultrafine-grained (UFG) copper studied in this paper was produced by equal channel angularpressing (ECAP) method and tested in gigacycle fatigue region. In contrary to conventionalgrain size copper, the appearance of cyclic slip bands is quite rare and surface relief does notform well below the fatigue limit. The cycl…
Montmorillonite nanoclay was modified with octadecylamine and compounded with natural rubber by the melt mixing method. Influence of the modification on the properties of natural rubber/organoclay nanocomposites was investigated. Furthermore, structures of the natural rubber/clay nanocomposites were characterized by X…
Oriental Journal of Chemistry is a peer reviewed quarterly research journal of pure and applied chemistry. It publishes standard research papers in almost all thrust areas of current chemistry of academic and commercial importance. It provides a platform for rapid publication of quality research papers, reviews and ch…
Inhibition performance of Lornoxicam & Tenoxicam against corrosion of carbon steel in 1 M H 2 SO 4 solutions was investigated by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements. The inhibition efficiency increased with increasing inhibitor's concentration, but de…
Corrosion inhibition of carbon steel in 2 M HCl by some benzohydrazide derivatives (I-III) was studied using weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) techniques at 30C. Polarization studies showed that all the investigated compounds are of mixed type inhibitors. Tempe…
Corrosion inhibition of carbon steel in 2 M HCl by some benzohydrazide derivatives (I-III) was studied using weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) techniques at 30C. Polarization studies showed that all the investigated compounds are of mixed type inhibitors. Tempe…
We prepared hybrid nano-composites by blending chitosan-Gelatin with Cloisite 30B in aqueous solution. These composites were characterized by using FTIR, SEM and XRD analysis. Various groups present in the chitosan-Gelatin blend were monitored from FTIR spectra. The morphology, homogeneity and crystallinity of the ble…
Background. Analysis of the properties of various chitosan grades has resulted in a working hypothesis that chitosan can be used as part of protective fi lm-forming coatings for meat and meat products. The aim of this study was the research of composition, properties and antibacterial activity of chitosan-based coatin…
Inhibition of corrosion of mild steel in sulphuric acid by acidic extract of Jatropha Curcas leaves has been studied using weight loss and thermometric measurements. It was found that the leaves extract act as a good corrosion inhibitor for mild steel in all concentrations of the extract. The inhibition action depends…
Inhibition of corrosion of mild steel in sulphuric acid by acidic extract of Jatropha Curcas leaves has been studied using weight loss and thermometric measurements. It was found that the leaves extract act as a good corrosion inhibitor for mild steel in all concentrations of the extract. The inhibition action depends…
This paper investigates the physical properties of aramid and aramid/nylon hybrid air jet textured filaments for protective garments relative to ATY nozzle diameters. Three types of para-aramids(840d, 1,000d, 1,500d) and nylon(420d) filaments were prepared; in addition, 840d aramid/420d nylon and three kinds of aramid…