Materials Literature
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The paper describes the frequency dependences of the electrophysical parameters (capacitance, dielectric constant, dielectric loss tangent, and resistivity) of polystyrene films filled with small additions of fullerenes (up to 1 wt % of C60). The composite materials obtained were concluded to be nonpolar. The dielectr…
Undoped galliumantimony apitexiallayers were grown on(100) GaAs substrstes by vertical reactor metal organicchemical vapor deposition. The tridimenthylaminoantimony/trimethylgallium mole fraction (V/III ratio) wasconstant at 2.0 and the growth temperatures were varied 5200C-5400C. The growth pressure in this research…
We consider electron transport in a planar fermion model containing various types of line defects modelled by $δ$--function pseudopotentials with different matrix coefficients. The transmission probability for electron transport through the defect line is obtained for various types of pseudopotentials. For the schemat…
due to the ethical misconduct of Karel Bezouska and misappropriation of data which fundamentally changes the main findings of the article. Specifically, the upper amino acid sequence in Figure The different biochemical properties of Nit-ANigWT and Nit-ANigRec discussed in the paper were caused by a significant differe…
IAJAA is a peer reviewed journal published by iMed.pub for The Arab Alliance for the Prudent Use of Antimicrobials, Cairo, Egypt. The journal is supported by a grant of Monojo Innovation Company, Jordan. Interested in submitting to this journal? We recom
Among the polymers, polyaniline (PANI) is a unique conjugated polymer in that it can be tailored for specific applications through a non-redox acid/base doping process. Unfortunately, Its poor solubility in most common organic solvents has limited the industrial application of PANI because of its high aromatic nature,…
以聚丙烯腈基活性碳纤维(PAN-ACF)和SnCl 2 为原料, 采用溶胶-凝胶法制备PAN-ACF/SnO 2 复合材料并将其用作锂离子电池负极材料。采用X射线衍射仪(XRD)分析材料的组成及晶体结构; 用扫描电镜(SEM)观察样品形貌; 用热失重分析(TGA)对复合材料中SnO 2 的含量进行测定; 用恒流充放电、交流阻抗(EIS)和循环伏安(CV)对复合材料作为锂离子电池负极材料的电化学性能进行表征。结果表明, SnO 2 的含量对产物的形貌、结构和电化学性能有重要的影响。所制得的PAN-ACF/SnO 2 复合材料中SnO 2 的晶格常数 a =0.4739 nm和 c =0.3181 nm, 为四方金红石结构。PAN-A…
采用多层自组装技术在Al 2 O 3 微滤膜表面制备TiO 2 纳米涂层, 并利用1H,1H,2H,2H-全氟辛基乙基三乙氧基硅烷(PFDS)对其表面进行氟化处理, 获得超疏水改性膜。通过X射线衍射仪, 傅立叶变换红外光谱仪, 原子力显微镜, 水接触角测试仪和扫描电子显微镜对改性膜进行表征。分析了TiO 2 纳米涂层的晶型结构, 探讨了TiO 2 沉积时间与改性膜表面粗糙度和疏水性之间的关系, 研究了PFDS改性次数对膜表面形貌和疏水性能的影响规律。结果表明: 在600℃退火1 h后, 获得锐钛矿结构的TiO 2 纳米涂层。随TiO 2 沉积时间的延长, 膜表面粗糙度增大, 水滴在膜表面的接触由Wenzel状态转变为Cassie状…
Polyaniline (PANI) composites containing poly(3‐hydroxybutyric acid) (PHB) were synthesized via in situ deposition technique. The oxidative polymerization of aniline hydrochloride was carried out by dissolving different weight percentages (10 wt%, 20 wt%, 30 wt%, 40 wt%, and 50 wt%) of PHB using ammonium persulfate as…
A new nickel(II) complex [NiL1]2+ (L1 = 1-(2-aminoethyl)-3-(N-{2-aminoethyl}aminomethyl-1,3-diazacyclo-hexane) containing one 1,3-diazacyclohexane ring has been prepared selectively by the metal-template condensation of formaldehyde with N-(2-aminoethyl)-1,3-propanediamine and ethylenediamine at room temperature. The…
Dongchang College, Liaocheng University, Liaocheng 252059, P.R. ChinaReceived March 18, 2013, Accepted April 30, 2013Key Words : Cyanide-bridged, One-dimensional, Synthesis, Crystal structure, Magnetic propertyIn the past three decades, the design and synthesis ofmolecular magnetic materials has attracted extensive in…
A Heusler Ni50Mn29Ga20Gd1 ferromagnetic shape memory alloy is obtained by substituting 1 at-Gd for Ga in a ternary Ni50Mn29Ga21 alloy. The microstructure, phase transformation, magnetic and mechanical properties of Ni50Mn29Ga20Gd1 alloy are investigated. It is shown that the Ni50Mn29Ga20Gd1 alloy has the best overall…
Thiourea doped Sulphamic acid (Th : SA) single crystals were grown successfully by slow-evaporation technique. To identify the morphology and structure, the as grown crystals were subjected to characterization like powder and single XRD analysis. UVVis-NIR spectrum and FTIR studies are performed to identify the cut-of…
Reliability of structures is sometimes statistically evaluated since strengths of structures, inner and external forces in structures are statistically distributed. Inspection planning of structures, which plays important roll in health management, is also determined in a probabilistic manner in those cases. In this p…
SiC whiskers were prepared on graphite matrix using common and low-cost hydrogen silicone oil (H-PSO) as raw material, and the influence of different process parameters on the growth of SiC whisker was stud- ied based on the crystallization fraction using orthogonal test method. The process parameters include heat tre…
A series of poly(glycerol-succinic acid) dithiocarbamate and 1,3,4-thiadiazole dendrimers, which have potential as anti-wear oil additives, were synthesized. Their anti-wear properties in three different oils (100N, DB-51, and soybean) were evaluated using a four-ball wear tester. The results indicated that thiocarbam…
The design and synthesis of metal-radical complexes has attracted much attention in several filed of chemistry, optics, physics and material science for the purpose of exploiting new molecule-based magnetic materials. Among these metal-radical complexes, much attraction has been paid to the research of nitronyl nitrox…
The dihydroxy naphthalene/ $TiO_2$ complexes with different substitution patterns were prepared by surface modification. X-ray diffraction, UV-Vis spectroscopy, photoluminescence, and X-ray photoelectron spectroscopy were used to characterize the prepared composite materials. The results indicated that the surface mod…
Composite materials of mesoporous carbon and carbon nanotubes were synthesized using Ni, Co and Pd-loaded CMK3 via a catalytic reaction of methane and $CO_2$ . The CNTs grew from the pores of the mesoporous carbon supports, and they were attached tightly to the CMK3 surface in a densely tangled shape. The CNT/CMK3 com…
ABSTRACT The incorporation of carbon nanotubes to thermoplastic fibers can potentially improve mechanical, thermal and electrical properties. In this article, a methodology to tailor the mechanical properties of carbon nanotube/nylon fibers is presented. Multiwalled nanotubes (MWNT) were combined to polyamide 12 throu…