2011년 추계 학술대회 우수논문 발표상 수상자
대학원 우수논문
1LF-7
Directional Freezing as a Nano-processing Method of Aligned Poly(vinylidene fluoride) (PVDF)
이민경ㆍ이혜승ㆍ김병수ㆍ이종휘†
중앙대학교 ([email protected]†)
We developed freeze drying as a versatile processing technique for polymeric nanostructures. Monodisperse poly(vinylidene fluoride) (PVDF) nanostructures, whose aspect ratio and molecular alignment could be controlled, were fabricated by confined directional freezing process in anodic aluminum oxide membranes. Two major parameters, solution concentration and 3D temperature distribution, were controlled to reliably control the nucleation and crystal growth of PVDF. Regarding the first parameter, an increase in concentration increased aspect ratio from nanospheres to nanorods. Single crystalline nanospheres could be obtained at a low concentration cases. A plausible mechanism involves uniform nucleation in confined space and subsequent diffusion-controlled or confined directional growth. Under unidirectional temperature gradient, PVDF crystallized into an anisometrically oriented ferroelectric g form of nanospheres, nanocapsules and nanorods in confined spaces.
Keywords: Directional freezing, confinement, confined crystallization, polymer nanostructures, ferroelectric nanostructures
구두발표
1LF-2
Fabrication of uniform microparticles with structural complexity on the surface and inside by using biodegradable polymer and non-degradable polymer
김미리ㆍ황보경희ㆍ조국영†
공주대학교 ([email protected]†)
Microparticles of uniform size have been widely used for various fields such as drug delivery system, medical imaging agents and tissue engineering. In previous studies, golf-ball shaped microparticles were fabricated by small colloidal particles attached on the surface of microparticles. However, the previous studies cannot be applied to biodegradable polymers because of removal process of small colloidal particles by strong acids. We recently reported the fabrication of new structural microparticles with structural complexity both on the surface and inside by a simple O/W technique using PLGA. In this study, microparticles were fabricated with uniform
size and structural complexity at both the surface of golf-ball-shaped and internal structure of porous. Our system can be applied to various polymers such as semi-crystalline biodegradable polymer, amorphous biodegradable polymers and non-degradable polymer.
Keywords: biodegradable polymer, microparticle, uniform, dimple
1LF-3
Characterization of organic/inorganic composite membranes for application in polymer electrolyte membrane fuel cell
김득주ㆍ남상용† 경상대학교 ([email protected]†)
Fuel cells are one of the most promising clean energy technologies. The ideal electrolyte membrane for fuel cell should possess a low fuel crossover and high ionic conductivity. For this reason, one interesting alternative has been the hybrid organic/inorganic membrane, which has the potential to provide a unique combination of organic and inorganic properties with improved conductivity at high temperatures. In this study, the composite membranes have been prepared by incorporating various inorganic additives into a partially-sulfonated PAES polymer. And their microstructure, methanol permeability and proton conductivity at high temperature were investigated.
Keywords: PEMFC, composite membrane, inorganic additive, proton conductivity
1LF-5
Preparation of Targeting Peptide Nanoparticles for Gene Delivery by using PEG-conjugated Chitosan
남정표ㆍ홍락준ㆍ최창용ㆍ장미경ㆍ나재운†
순천대학교 ([email protected]†)
Targeting is important in gene delivery system for successful tumor therapy. We prepared targeting peptide nanopaticle with PEG-conjugated chitosan and RGD peptide for gene delivery. RGD peptide(a dimeric RGD peptide, H-Glu[cyclo(Arg-Gly-Asp-D-Phe-Lys)]2) has di-binding moiety able to binding αvβ3 integrin.
The polyethylene glycol (PEG) used to linker and hydrophilic site of low molecular weight water soluble chitosan(LMWSC) chain. The physicochemical properties of targeting peptide nanopaticle were analyzed by particle size, 1H-NMR, dynamic light scattering and transmission electron microscope (TEM) measurement.
Also, peptide nanopaticle was investigated transfection efficiency.
Keywords: LMWSC, Target, RGD, PEG
포스터발표
[고분자] 1P-10
ATR-FTIR을 이용한 고분자 필름의 흡습특성평가에 대한 연구
이춘희†ㆍ정기호ㆍ신안섭삼성전기(주) 기술총괄 부산연구분소 ([email protected]†)
본 연구에서는 환경 요인 중의 하나인 습도 환경에 따른 재료변화를 평가하기 위해, ATR-FTIR을 이용한 흡습특성 평가 process를 정립하였다. 또한 이를 당사 FCB제품 패턴형성용 Dry Film의 흡습특성평가에 적용하여 확산계수를 구하고, 그 결과를 기존의 질량변화 측정법과 비교하여 새로운 흡습특성평가 방법으로서의 ATR-FTIR방법의 정확도 를 확보하였다.
Keywords: ATR-FTIR, Absorbance, Absorption
1P-11
Preparation of the porous nanofiber webs of binary blend system using a differences of miscibility
조은미ㆍ홍창국*,†전남대학교 신화학소재공학, *전남대학교 응용화학공학부 ([email protected]†)
The aim was to determine the morphology development of polymer blend fiber webs using miscibility difference of PAN and other polymers. PMMA and PAA were selected as Pyrolyzing polymers due to its solubility parameters. PMMA have a huge difference with PAN compared to PAA. The 10 wt% PAN and 25 wt% of Poly(methyl methacrylate) (PMMA) and poly(acrylic acid)(PAA) were dissolved in DMF. PMMA and PAA blends based on PAN were prepared in a 75 : 25 ratio, blend nanofiber webs were prepared by electrospinning process. And PMMA and PAA were removed at a high temperature in N2 atmosphere. The morphology and diameter of fibers were investigated using scanning electron microscope. As changed miscibility of blends, the morphology and pore structures of blend fiber webs were controlled in various forms.
Keywords: polymer blend, electrospinning, miscibility
[나노] 1P-16
Gold Nanoparticles Sensitized Chemiluminescence for the Determination of Perphenazine
MD R-Mahmnur AlamㆍKAMRUZZAMAN MDㆍ이상학†ㆍ김영호*ㆍ장택균ㆍ홍석주**ㆍ오상협***경북대학교 화학과, *경북대학교 차세대에너지기술연구소, **경북대학교 센서 및 디스플레이공학과,
***한국표준과학연구원 대기환경표준센터 ([email protected]†)
A rapid and sensitive chemiluminescence (CL) method was designed for the determination of trace amount of perphenazine (PERN) based on the gold nanoparticles enhanced luminol-H2O2-PERN system. The degree of enhancement of CL signal intensity of the system was proportional with the concentration of PERN. Under optimum experimental conditions, the linearity of CL signal intensity was observed in the range of 3.5×10-9 to
2.0×10-7 mol/L (r2=0.9995) with a detection limit of 1.37×10-9 mol/L. Precision of the method was tested at the concentration level of 1.0×10-7 mol/L for 8 replicate measurements giving value of RSD 2.25%.
Keywords: Chemiluminescence, Luminol, Gold Nanoparticles, Perphenazine
1P-21
Reaction Characteristics of Al/Fe
2O
3Nanocomposites
신문수ㆍ김재경ㆍ김준우ㆍ김현수*ㆍ구기갑†서강대학교, *국방과학연구소 ([email protected]†)
Thermite is a pyrotechnic composition of a metal powder and a metal oxide, which have superior exothermic reaction. In this study, Al/Fe2O3 thermite reaction was focused on. Al/Fe2O3 nanocomposite was prepared by two different methods: an ultrasonic mixing method and a sol-gel method. The as-prepared xerogel phases were characterized by FT-IR. SEM observation shows that dispersion of nanocomposites by sol-gel is better compared with those by ultrasonic mixing. TG-DSC data reveals that heat of enthalpy of nanocomposites by sol-gel is about 4 times higher than those by ultrasonic mixing.
Keywords: Thermite, Sol-gel
[무기재료] 2P-2
저온 플라즈마 방전 하에서의 Sr
2SiO
4: Eu
2+형광체 합성
고란영ㆍ장두일ㆍ좌은진ㆍ이상백ㆍ목영선†
제주대학교 ([email protected]†)
형광체는 외부에서 공급되는 에너지를 흡수하여 가시광선의 에너지를 방출하는 물질로서 정의되며, 환원 분위기의 고온에서 소성을 통해 합성되고 있다. 본 연구에서는 기존의 고상 합성반응법으로 제조된 형광체 전구물질을 환원 분 위기의 고온에서 소성하며, 이때 소성 반응기에 저온 플라즈마를 발생시켜 합성된 형광체의 특성 변화를 관찰하였다.
온도의 영향과 반응 시간의 영향을 고찰하기 위해 1275~1375 ℃, 0~2시간의 고온 유지시간에서 합성하여 기존의 방 법으로 합성된 형광체와 비교하였다. 본 연구의 Sr2SiO4 : Eu2+ 형광체는 450 nm 영역의 에너지를 흡수하여, 약 518 nm에서 가장 강한 photoluminescence를 나타냈다.
Keywords: 형광체, Sr2SiO4 : Eu2+, 저온 플라즈마
2P-4
탄소프리폼의 표면 함산소불소화가 PCS 중합코팅 및 내산화 특성에 미치는 영향
김진훈ㆍ정의경ㆍ이영석†
충남대학교 ([email protected]†)
본 연구에서는 내산화 특성이 우수한 탄소/탄소 복합재를 제조하기 위하여, NP프리폼에 폴리카보실란(PCS) 코팅 공 정을 이용하였다. PCS코팅 공정의 전 단계에서 프리폼과 PCS의 결합 특성과 내산화 특성을 향상 시키고자 프리폼 표 면에 함산소불소화 반응을 실시하여 반응 가스비 조건에 따른 PCS코팅의 특성에 미치는 상승효과를 고찰하였다. 함산
소불소화된 프리폼의 표면특성을 고찰하고자 XPS를 이용하였으며, PCS 코팅된 프리폼의 표면을 SEM 분석을 통하여 코팅 특성을 확인하였다. 제조된 시료는 열분석기를 이용하여 공기 분위기에서 1000 ℃까지 내산화 특성을 평가하였다.
Keywords: 프리폼, 폴리카보실란, 함산소불소화, 내산화코팅
[생물공학] 2P-12
Enhanced biogical phosphate removal by wild-typed and recombinant Escherichia coli
이현민ㆍ박영호ㆍ김민지ㆍ최석순†ㆍ정태영*ㆍ김창섭**ㆍ차형준**세명대학교 바이오환경공학과, *연세대학교 환경공학부, **포항공과대학교 화학공학과 ([email protected]†)
Recently, regulation over phosphate from municipal wastewater treatment is becoming more strict. Therefore, a novel treatment guaranteeing high-removal efficiency is required. Biological process is a cost-effective and environmentally sound alternative to the chemical treatment of wastewater. In the present work, comparison of phosphate removal were investigated for enhancing the phosphate uptake ability with cultivation of wild-typed and recombinant Escherichia coli.
Keywords: Phosphate removal, Escherichia coli
[전기화학] 2P-14
Fabrication of Glucose Biosensor Based on ZnO Nanorods
LI NANㆍ이수연ㆍ윤현희†경원대학교 ([email protected]†)
An amperometric glucose biosensor was fabricated on the basis of aligned ZnO nanorod film. Glucose oxidase was immobilized onto the ZnO nanorod film. The ZnO nanorod films were synthesized by growing ZnO nonorods tin-doped indium oxide (ITO) glass directly. The electrode surface was coated via a chitosan matrix.
The prepared electrode was characterized by scanning electron microscopy (SEM), and cyclic voltammetry (CV).
The electrode exhibited good electrochemical performance for the glucose analysis with a linear range of 0-60 mM glucose.
Keywords: Glucose, ZnO, ITO, film
2P-20
Electrochemical characteristics of MWNT/MCMB electrode as high power density for lithium ion battery
최종환ㆍ박수길†ㆍ김한주* 충북대학교, *퓨리켐 ([email protected]†)
MCMB anode materials have stable lithium intercalation and de-intercalation characteristics. So MCMB is good material of lithium ion secondary battery for anode materials. Carbon nanotubes (CNTs) are some of the most promising materials for a range of electrochemical energy conversion and storage devices, due to including
high electrical conductivity, superior chemical and mechanical stability. So, CNT deposited surface on meso phase micro beads (MCMB) were researched for improving of electrical conductivity. Such as, anode material deposed CNT on surface of MCMB were prepared by functionalization. Analysis of MWNT/MCMB electrode was measured by XPS, SEM, Charge-discharge test, AC Impedance.
Keywords: Lithium ion battery, anode material, MCMB, MWNT
[접착제도료잉크] 2P-23
Application of the self-polishing copolymers containing PEO to marine paints
김상민ㆍ박 현*,†ㆍ전호환ㆍ이인원*부산대학교 조선해양공학과, *부산대학교 첨단조선해양공학센터
The self-polishing copolymer (SPC)s release biocides by the mechanism of a hydrolysis or ion exchange reaction of an acrylic polymer with seawater. So it has been variously applied to antifouling paints as the binder. The poly(ethylene oxide) (PEO) has been used as a drag-reduction (DR) addictive in aqueous systems.
We have confirmed the DR effect of PEO applied to the SPCs mechanism at the surface of a panel and whether the leaching rate of PEO in SPCs is constant or not. In this study we grafted PEO on methylmethacrylate (MMA) which is a monomer of SPCs by transesterification and then compounded the SPCs resin containing PEO. The structures of the synthesized polymers were determined by using 1H-NMR and FT-IR. Other properties of samples are investigated through the immersion, leaching rate and Drag-reduction tests. The experiments have been carried out and investigated the correlations between the leaching rate and the content, molecular weight of the PEO.
Keywords: self-polishing, PEO, antifouling, marine paint, drag reduction
[정밀화학] 1P-26
Method for conversion of Sorbitol to Isosorbide using Ionic Liquid or Lewis acid
권철희ㆍ이상협†대구가톨릭대학교 ([email protected]†)
How to substitute the current oil is a significant incidence. Accordingly, Bio Refinery through a biomass pretreatment process that can be obtained based on cellulose polycarbonate polymers are receiving attention as a monomer in Sorbitol to Isosorbide studied transition. 1% of already known Roquette process using sulfuric acid as isosorbide conversion, but in this study for the purpose of Non-sulfuric acid process without the use of sulfuric acid for the purpose of conversion to isosorbide were studied. As a result, without the use sulfuric acid Ionic liquid, or using Lewis acid isosorbide even confirmed the fact that conversion to.
Keywords: isosorbide, sorbitol, Ionic liquid, Lewis acid
1P-28
Novel-AMP with antibacterial and synergistic effect against MDRS isolated
from patients with cholelithiasis
박진순ㆍ박윤경† 조선대학교 생명공학과 ([email protected]†)
Pseudomonas aeruginosa has developed resistance against flomoxef sodium, isepamicin and cefpiramide.
Therefore the antibacterial activity and synergistic effects of the amphipathic-derived P5-18mer antimicrobial peptide were tested against pathogens associated with cholelithiasis that have developed resistance against commonly used antibiotics. P5-18mer peptide displayed strong activity against pathogens, but it did not exert cytotoxicity against the human keratinocyte cell. Moreover, these peptides has a rapid microbicidal effect on flomoxef sodium, isepamicin and cefpiramide-resistant strains of P. aeruginosa. Therefore, these peptides may be used as a lead drug for the treatment of acquired pathogens from patients with cholelithiasis who are affected with antibiotic-resistant bacteria.
Keywords: Antimicrobial drug
[정보전자소재] 2P-28
Vibration restriction of benzoxazole molecules and their enhanced emission in solid states
진상준ㆍ김형준†공주대학교 ([email protected]†)
Excited-state intramolecular proton transfer (ESIPT) has received considerable attention due to the characteristic four-level photophysical scheme incorporating the ground and excited states of two different tautomers of enol and keto forms. Different absorbing and emitting molecular species in this ESIPT cycle normally result in the total exclusion of self-absorption and the large Stokes’ shifted keto emission. Based on these unique and beneficial photophysical properties, ESIPT molecules are gaining interest for potential applications in organic light emitting diodes, photo-patterning, chemosensor, proton transfer laser, and photostabilizer. Fine control of the functional substituents as well as the molecular structure of core ESIPT unit is primarily demanded for specific applications. Here, we report the enhanced photoluminescence and the photo-physical properties of benzoxazole derivatives appropriate for the field of fluorescence labeling.
Keywords: Fluorescence labeling, excited state intramolecular proton transfer
[촉매] 1P-34
디젤 배기가스 후처리를 위한 TiO
2-SiO
2에 담지된 Pt 촉매의 개발
김영훈ㆍ김연수ㆍ이진하*ㆍ이호인†서울대학교 화학생물공학부 및 에너지 변환/저장 연구센터, *현대·기아자동차 환경기술연구소
디젤배기가스 후처리장치 중 DPF에 주로 사용되는 Pt/Al2O3 촉매는 장시간 운전함에 따라 백금입자의 소결이나 연 료에 포함된 황성분에 의한 피독으로 성능이 감소하는 문제점이 있다. 본 연구에서는 열에 강하고 황에 의한 피독이 작은 TiO2-SiO2 혼합산화물을 담체로 사용하여 NO 산화반응의 활성감소를 막고 성능이 우수한 촉매를 제조하였다.
제조된 혼합산화물 담체는 높은 BET 표면적을 가지며, 담지된 귀금속의 분산도를 높여 활성을 좋게 하였다. 열화 후 XRD 분석 결과, 제조된 혼합산화물 담체에서 담체 피독의 원인인 황산염은 발견되지 않았으나, 주촉매인 Pt의 소결현
상과 Pt와 담체간의 상호작용에 의한 Ti2O3 생성에 의해 비활성화가 일어났다.
Keywords: DPF, TiO2-SiO2, NO 산화반응, Ti2O3
1P-39
Graphite 구조를 갖는 탄소계 촉매상에서 부탄의 탈수소화 반응
장다영ㆍ장형규ㆍ김계령ㆍ김건중†
인하대학교 ([email protected]†)
Glassy carbon sphere, SWCNT, graphene and graphite과 같은 well-nanostructured carbons의 촉매적 활성화는 부탄에서 올레핀을 얻기 위한 ODH반응으로 증명되어왔다. 이 탄소 샘픔들은 연장된 시간 동안 안정한 촉매적 성능을 보여주었다. 생성물에서의 부텐은 온도가 올라갈수록 감소하고, 반면에 에텐과 프로펜의 선택도는 증가한다. Pd가 포 함된 CNF는 Pd가 담지된 CNF보다 뛰어난 선택도를 가진다. 탄소의 흑연적 구조는 부탄의 ODH에서 큰 연소없이 프 로필렌과 부텐의 높은 선택도를 보여준다.
Keywords: SWCNT, oxidative dehydrogenation, butane, alkene selectivity
[콜로이드계면화학] 2P-31
Disulfide cross-liked self-aggregates of graft copolymers for anti-cancer drug delivery
박찬우ㆍ김종득†KAIST ([email protected]†)
We developed disulfide cross-linked nanovesicles from amiphiphilic graft polymers, poly(hydroxyethyl aspartamide)-g-polycysteine. The polymer formed vesicular aggregates in aqueous solution and the thickness of shell can be controlled by adjusting the length of hydrophobic chains. The morphology of vesicles can be confirmed by TEM and small angle neutron scattering analysis. The hydrophobic polycysteine formed disulfide cross-linking and hydrogen bond formation by self-oxidation and beta sheet formation, respectively.
Intracellular compartments have high reductive environment though blood stream have low concentration of reducing agent. Consequently, particles are stable in blood stream though they can be destabilized at cancer cells. The anticancer drug, doxorubicin (DOX), was encapsulated within the cavity of vesicles, and anticancer efficacy was evaluated by MTT assay.
Keywords: vesicle, graft copolymer, cross-link
[화학공정] 2P-39
Scratch and Mar Behaviors of Clear Coats on a White Colored Substrate
정원영ㆍ이선용ㆍ박성범ㆍ우흥식ㆍ원종일†
동국대학교 ([email protected]†)
고분자 코팅 소재의 최근 주요 이슈는 마이크로 스크래치, 마모 및 미세한 흠/긁힘(mar) 등의 표면손상과 관련된 것 이다. 본 연구에서는 흰색의 플라스틱 표면에 고광택 코팅된 소재의 스크래치 및 흠/긁힘 거동을 조사하였다. 코팅 소
재 표면과 면 접촉이 가능한 스크래치 팁에 특정 거칠기를 갖는 샌드페이퍼를 부착하여 흠/긁힘 및 스크래치 표면손상 을 발생시킨 후 표면손상 정도를 백분율로 표시된 광택도 및 휘도로 나타내었다. 이러한 접근방법은 코팅 소재의 흠/긁 힘 및 스크래치 거동과 표면손상 정도를 정량적으로 평가할 수 있었다. 표면손상에 따른 표면 조도, 광택도 및 휘도간 의 상관관계에 대해서도 토의하였다.
Keywords: 고분자, 스크래치, 흠, 긁힘, 코팅
[환경에너지] 1P-41
Direct Seperation and Derivatization of Cellulose from Poplar Wood
Vo Thanh Huyen*,**ㆍ이현주*,**,†*KIST, **UST ([email protected]†)
Cellulose derivative is directly synthesized from wood – ionic liquids solution. 1-Butyl, 3-methylimidazolium ionic liquid ([Bmim][OAc]) is found as a good solvent for completely dissolving wood, and 1, 3-dimethylimidazolium methyl phosphite ionic liquid ([Dmim][(MeO)(H)PO2]) is found as a phosphorylating agent to react with cellulose to form a imidazolium-containing phosphorylated cellulose product. FT-IR, Elemental Analysis and 13C-NMR experiments demonstrated that the presence of phosphorous-containing group located on the cellulose chain in the separated wood. SEM and XRD analyses revealed that the crystallinity of raw wood was changed from cellulose I-crystalline phase to amorphous phase in the phosphoryated sample. The phosphorylated wood is cellulose-rich material, containing a small amount of lignin. The advantages of this product are good water-solubility and good flame-retardant property which might open potential applications in biochemical processes.
Keywords: phosphorylation, phosphorylated cellulose, wood, ionic liquids
1P-45
Preparation and characterization of partially fluorinated poly(arylene ether sulfone)/PTFE composite membranes for PEMFC
김은희*,**ㆍ장봉준*ㆍ김정훈*,**,†
*한국화학연구원 환경자원센터, **과학기술연합대학원대학교 ([email protected]†)
본 연구는 다공성 Polytetrafluoroethylene(PTFE) 막과 불소관능기인 perfluorocyclobutane (PFCB)기를 포함하는 부분 불소 탄화수소계 고분자에 후 술폰화시킨 post-sulfonated poly(arylene ether sulfone) 랜덤 공중합체를 이용하 여 복합막을 제조하였다. 술폰화 랜덤 공중합체의 제조는 세단계의 합성, 즉 trifluorovinyloxy그룹을 양말단에 포함하 는 단량체의 합성, 중부가반응 형태의 열중합, 그리고 chlorosulfonic acid를 이용한 후술폰화를 통하여 얻어졌다. 후술 폰화 반응은 고분자 내에 포함된 biphenyl기의 함량에 따라 일정한 몰 비의 술폰화제 비율로 고정하여 진행되었다. 이 렇게 제조된 랜덤 공중합체를 다공성 PTFE 막에 함침시켜 복합막을 제조하였고, 이온 교환 능력(IEC), 함수율, 이온전 도도를 측정하여 Nafion과 비교하였다. 제조된 단량체 및 고분자의 구조와 순도는 각각 FT-IR과 NMR 그리고 질량분 석기를 통하여 확인하였으며, 제조된 복합막의 형태는 SEM으로 관찰하였다.
Keywords: composite membrane, PTFE, fluorinated polymer, proton exchange membrane, poly(arylene ether sulfone), sulfonation
2P-44
Catalytic effects of graphene-based counter electrode in dye-sensitized solar cell(DSSC)
장지영*,**ㆍ김희진*ㆍ황지영*ㆍ김우식*ㆍ박노형*ㆍ박승규**ㆍ함 헌***ㆍ박춘근*ㆍ허 훈*,†*한국생산기술연구원, **호서대학교, ***H&H ([email protected]†)
Graphenes were prepared by various methods such as exfoliation of graphite, unzipping of CNT and chemical vapor deposition (CVD). DSSCs were fabricated using graphene-based catalyst for counter electrode. Structural properties of graphenes and catalytic effect of counter electrode were estimated. The structural properties of graphene was analyzed by Raman spectroscopy and XRD, the morphology of graphene was analyzed by SEM and TEM, and the power conversion efficiency of DSSC was measured by using solar simulator.
Keywords: DSSC, Counter electrode, Graphene
2P-48
Bottom Ash를 이용한 광분해 흡착제 제조 및 수중의 유기물 제거 성능 연구
최민준ㆍ김한수†ㆍ안중혁*ㆍ김종규**강릉원주대학교, *국립보건환경연구원, **런던대학교 UCL 토목환경공학과 ([email protected]†)
화력발전소에서 발생하는 석탄 애쉬는 탄의 품질 또는 연소 방식에 따라 생성되는 양은 다르지만 대략 15-20%가 탄에 함유되어 있다. 석탄 애쉬는 미국 등의 선진국에서는 매년 60% 이상 재활용하고 있으며, 국내에서도 30%정도 의 양질의 석탄 애쉬를 고유의 성질과 형태를 크게 변화시키지 않고 이용할 수 있는 시멘트 콘크리트의 혼화제로 사용 되고 있다. 그러나 이러한 재사용에도 불구하고 여전히 많은 양의 석탄 애쉬가 잔존하며 매년 많은 양이 발생한다. 특 히, 재사용되지 못하고 폐기 되는 석탄 애쉬는 0.3~10.0 mm의 입자크기의 바텀 애쉬가 대부분이다. 본 연구에서는 화 력발전소에서 발생하는 0.3~10.0 mm 입자크기의 바텀 애쉬를 광촉매와 혼합하여 광분해 성능을 가진 흡착재를 제조 하였다. 제조된 H.P.A.를 이용하여 수중에서 유기물의 흡착 및 광산화 성능을 조사하였다. 최적의 반응시간, pH, 그리 고 H.P.A.의 주입량을 CCD를 이용한 RSM에 의해 결정하였다. 실험결과 시간과 pH가 유기물을 제거하기 위한 중요 한 인자로 나타났으며, pH가 낮고 반응시간이 길수록 높은 처리 효율을 나타내었다. 수학적 보간법을 통해 최적의 효 율을 얻을 수 있는 최적 값을 도출하였다.
Keywords: Bottom ash, photocatalyst, Organic materials, CCD, RSM
[에너지저장변환] 2P-53
Synthesis and Photovoltaic Properties of Donor/Acceptor Conjugated Randomcopolymers based on Carbazole, Benzothiadiazole and Quinoxaline
김두헌ㆍ송호준ㆍ허수원ㆍ문두경†
건국대학교 ([email protected]†)
Solar cells based on conjugated polymeric materials have recently received considerable attention due to their low-cost solution fabrication process, light weight, large area and flexible panels as well as potential contri- bution to clean and renewable energy. We synthesized two randomcopolymers using different space group by Suzuki coupling reaction to increase molecular weight and efficiency. Thus, polymers were investigated physical,
optical, electrochemical and photovoltaic properties.
Keywords: Organic Photovoltaic, randomcopolymer, benzothiadiazole, quinoxaline
2P-64
Aniline base conducting polymer as cathode material for lithium-ion battery
윤수련ㆍ강영구*ㆍ류광선†울산대학교 화학과, *한국화학연구원 소자재료 연구센터 ([email protected]†)
The Poly(2,2-dithiodianiline) (PDTDA), poly(2-aminothiophenol) (P(2-ATP)), and poly(diaminodiphenyl sulfone) (PDADPS) were polymerized by chemically method. These conducting polymers were used as cathode active material in lithium-ion battery. We measure electrochemical properties such as charge-discharge ability, and cyclic performance. The discharge capacities of PDTDA, P(2-ATP), and PDADPS were 55.8, 37.1, and 26.0 mAh/g after 50 cycle, respectively.
Keywords: Aniline base conducting polymer, cathode material, lithium-ion battery
베트남학생 장학금(KSIEC Scholarship) 지급에 관한 내규
2011. 10. 10 제정
