Materials Literature
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For the first time, the photochromic spiropyran dye [1’-3’-dihydro-1’,3’,3’-trimethyl-6-nitrospiro [2H-1-benzopyran-2,2’-(2H)-indole] (indole) was successfully embedded as a guest molecule into the poly(e-caprolactone) (PCL) host polymer matrix via the electrospinning technique. The resulting PCL/Indole electrospun fi…
Two process models for carbon dioxide (CO2) utilized gas-to-liquids (GTL) process mainly producing methanol were developed by Aspen Plus software. Both models are mainly comprised of a reforming unit, a methanol synthesis unit and a recycle unit. With recycling, it was found that the energy efficiency was successfully…
Organic-inorganic hybrid materials have been a most effective source for advanced materials due to their wide range of applications associated with unique thermal, mechanical, rheological, chemical, and physical properties. Among various inorganic building blocks, polyhedral oligomeric silsesquioxanes (POSS) are a new…
Carbon materials such as one-dimensional carbon nanotube (CNT) and two-dimensional graphene sheet have many excellent properties such as good flexibility, high electric conductivity and mechanical strength, however, have nearly insoluble in aqueous medium. PEDOT:PSS, conducting polymers have been used the widely energ…
본 연구에서는 2톤/일급 석탄가스화기 시스템을 이용한 무회분탄의 가스화 적용성 평가 연구의 일환으로 재충진장치를 연계한 상태에서 기류수송 방식의 무회분탄 공급장치에 대한 연속운전 시험을 진행하였다. 무회분탄 공급장치의 연속운전 feeding 시험은 질소가스를 이용하여 cold 상태에서 진행하였는데, 가스화기 대체용 저장호퍼의 압력을 15 bar로 일정하게 유지하는 상태에서 공급호퍼와 저장호퍼 사이의 차압을 1.5 bar, 가압질소와 저항질소 유량을 각각 35 Nm3/h, 27 Nm3/h로 일정하게 유지하면서 분체시료(석탄: White haven)의 공급량을 실시간으…
In this study, we firstly synthesized 4-methylbenzyl-1-vinyl imidazolium chloride, [MBVI]+[Cl]-, by reaction of imidazole and α,α’dichloroparaxylene in dimethylformide. Subsequently, we synthesized the polymer by SN2 reaction of PVC and [MBVI]+[Cl]- as cross linker in cyclohexanone. The obtained anion exchange membran…
We report the influences of the sheet resistance (Rsheet) of a hole-collecting electrode (indium tin oxide, ITO) and the conductivity of a holecollecting buffer layer [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate), PEDOT:PSS] on the performance of flexible polymer solar cell (PSC). By applying high-conductiv…
Polymer-based organic solar cells (PSCs) have attracted a great deal of interest as a promising energy resource because of their advantages such as low manufacturing cost and flexible device applications over inorganic solar cells. Low band gap conjugated polymers with main chain alternating D-A structure are promisin…
The generation of waste heat is a significant problem in that it reduces the life spans of devices such as computers and cellular phones. Therefore, there is a large demand for improved means of efficient heat dissipation. Thermally conductive polymer composites offer new possibilities for replacing metal parts in ele…
Researchers have been trying to functionalize polymer-based 3-D inverse opal structures to utilize their unique 3-D geometric properties for various applications including optics, separation and piezoelectric devices. However, functionalization is still challenging due to the limited diffusion of water-based precursor…
Polypropylene (PP) is one of the important and common thermoplastics. The modification of PP for engineering applications has attracted attention in both academic and commercial fields. Thermoplastic polyester elastomer (TPEE) offer superior mechanical properties, heat resistance, flexibility and chemical resistance,…
The use of natural fibers as reinforcement in thermoplastics presents an interesting alternative for the production of low cost and ecologically friendly composites. One of the advantages of using natural fibres is their low specific weight, resulting in higher specific strength and stiffness when compared to glass re…
Optimum heat treatment conditions to improve the hardness and corrosion resistance of ternary Mg-Ca-Zn alloys have been studied, based on the theoretical models and DSC (Differential scanning calorimetry) experimental data. Two-step heating process at 420 ℃ and 480 ℃ has been applied and we have found that the low mel…
The basalt fibers/polypropylene composites have incomplete mechanical properties because basalt fibers have poor interfacial adhesion with polypropylene due to their imperfect interface. To improve the interfacial adhesion between basalt fibers and polypropylene (PP) resins, the effect of maleic anhydride-grafted poly…
Tato práce pojednává o metodě depozice funkčních materiálů zvané spiral coating a jejím využití při přípravě struktur na bázi organických materiálů. V první části této práce je popsán princip depozice, provedení depozičních zařízení a nástrojů. Druhá část je věnována přípravě organických materiálů, jejich depozici met…
One-dimensional (1D) structured nanomaterials with highly complex inner pore were significant to enhance the electrochemical energy storage for supercapacitor. Here, we report a MnO2/Carbon porous nanofiber (MPCNF) using simple single nozzle-co-electrospinning and redox reaction. Single nozzle-co-electrospinning was s…
A PANI/PSS nanofiller was introduced into a multilayer graphene matrix by mechanical blending, creating a graphene/polyaniline/poly (4-styrenesulfonate) (G/PANI/PSS) paste. PSS increases the homogeneity, interfacial interactions, and mechanical interlocking between the multilayer graphene and PANI, resulting in a unif…
Recently, in automobile coating industry, eco-friendly waterborne coating technology became an important issue to reduce emission of hazardous volatile organic compounds (VOCs) during coating process. Among many waterborne coating materials, waterborne polyurethane dispersions (WPUDs) have widely been investigated for…
Herein, we present a pH-responsive dynamic DNA nanocluster based on gold nanoparticles with highly packed nucleic acid assembly and evaluate its potential as a drug delivery carrier with tumor-specific accumulation. Each gold nanoparticle was readily functionalized with various DNA sequences; indeed, we modified the s…
Most of thermoplastic polymers can become conductive materials when added with some kinds of conducting particles, such as carbon blacks (CBs), carbon fibers (CFs), then the composites have the electrical and mechanical properties. In this work, the effect of filler type on electrical and mechanical properties of cond…