고분자 전해질 감습막의 합성과 전기적 성질

공명선,조준상,이학민,김경호 경북대학교 센서기술연구소 1991 센서技術學術大會論文集 Vol.2 No.1

고분자 습도센서의 감습재료로 이용하고자 4-vinylpyridine (4-VP) 과 methylmethacrylate(MMA) 의 공중함체를 전극에 도포한 후 α, ω-dihaloalkane으로 4 차 암모늄화시킨 후 습도변화에 따른 전기저항을 측정한 결과 소수성 모노머인 MMA의 양이증가할 수록 전기저항이 증가하였으며, 또한 α, ω-dihaloalkane에 의한 4차 암모늄화 반응시간에 따라서도 전기저항의 크기 및 감습막의 안정성에 차이가 있음을 알 수 있었다. In order to for a humidity sensitive material of polymeric humidity sensor, a copolymer of 4-vinylpyridine (4-VP) and methylmethacrylate (IBA) is coated on the electrode and then 4 quartermization by α, ω-dihaloalkane, and thereafter measured the electrical resistance due to humidity variation. As a result, the more content of MMA which is a hydrophobic monomer is increased, the more property of electrical resistance is increased. Also, according to the reaction time in 4 quarternization by α, ω-dihaloalkane we can see the diferences of the magnitude of electrical resistance and the stability of humidity -sensitive membrane.

포스포늄염을 포함하는 가교 고분자의 제조 및 그들의 감습특성

이칠원,공명선,이승재 호서대학교 반도체제조장비국산화연구센터 2000 학술대회 자료집 Vol.2000 No.1

고습도 또는 결로시 내수성을 지니는 저항형 습도센서를 제조하기 위하여 vinylbenzyl tributyl phosphonium chloride를 포함하는 4원 공중합체를 합성하여 저습도와 고습도 범위에서 측정이 가능한 습도센서용 감습막을 제작하였다. 1,5-dibrompentane과 4차 염화 가교 반응을 통하여 최종 저항형 습도 센서를 제작하였다. 감습막은 알루미나 기판에 한 쌍의 금 paste가 인쇄된 전극을 사용하였으며, 감습막은 다양한 비율의 vinylbenzyl tributyl phosphonium chloride, 2-(dimethylamino)ethyl methacrylate, 2-ethylhexyl acrylate, 그리고 [2-(methacryloyloxy)ethyl]trimethyl ammonium chloride등을 이용하여 제조하였다. 감습막은 micro-syringe를 이용하여 도포하였으며 건조 oven에서 50 ℃에서 6 시간 동안 가교반응을 진행하였다. 습도센서의 임피던스 특성은 2-(dimethylamino)ethyl methacrylate 또는 [2-(methacryloyloxy)ethyl]trimethyl ammonium chloride의 함량이 증가할수록 감소하였다. vinylbenzyl tributyl phosphonium chloride / 2-(dimethylamino)ethyl methacrylate / 2-ethylhexyl acrylate / [2-(methacryloyloxy)ethyl]trimethyl ammonium chloride의 조성비가 4/4/1/1인 공중합체의 경우 30∼90%RH 범위에서 2.64 MΩ ∼ 3.11MΩ 의 임피던스 특성을 보였으며 우수한 직선성과 낮은 히스테리시스 나타내었다.

Imide 단위를 포함하는 Polyamide의 합성과 열적 성질

길덕수,배장순,공명선 단국대학교 신소재기술연구소 1997 신소재 Vol.7 No.-

Imide 단위를 포함하는 diamine과 dicarboxylic acid 단량체들, N-(4-aminophenyl)-4-aminophthalimide(1), N-(4-carboxyphenyl)-4-carboxyphthalimide(2), N,N'-oxydiphenylenebis(4-aminophthalimide)(3) 및 N,N'-oxydiphenylenebis(4-carboxyphthalimide)(4)를 합성하였다. 위의 단량체들은 서로 축합하여 imide 단위가 교대된 poly(imide-amide)s를 합성하였으며 imide 단위를 포함하는 diamine 단량체들은 terephthaloyl chloride, isphthaloyl chloride와 축합하여 또다른 poly(imideamide)s를 합성하였다. 이렇게 합성된 중합체들은 NMP/LiCl 용액에 매우 잘 용해하였으나 그밖에 극성 반양자성 용매인 DMF, DMSO 및 DMAc 등에는 낮은 용해도를 보여주었다. 고유 점성도는 0.15-0.51 dL/g 이었으며 NMP/LiCl 용액으로부터 단단하지만 취성이 있는 고체막이 형성되었다. 중합체들의 유리전이온도 및 융점은 관찰되지 않았으나 400℃ 부근에서 서서히 분해가 시작되었으며, 중합체들은 500℃에서 82-93%의 잔사량을 나타내어 우수한 열적성질을 보여주었다. Diamine and dicarboxylic monomers with imide linkage, N-(4-aminophenyl)-4-aminophthalimide(1), N-(4-carboxyphenyl)-4-carboxyphthalimide (2), N,N'-oxydiphenylenebis (4-aminophthalimide)(3) and N,N'-oxydiphenylenebis (4-carboxyphthalimide) (4) were prepared, and poly(amide-imide)s with ease processing characteristics were prepared from the monomers, 1-4 and terephthaloyl chloride or isophthaloyl chloride. Intrinsic viscosity of polymers was 0.15-0.51 dL/g and brittle hare films were obtained by casting the NMP/LiCl polymer solution on to glass plate. The poly (amide-imide)s are easily solubiel in NMP/LiCl and also in polar aprotic solvents such as DMF, DMSO, NMP and DMAc at 80℃. These polymers showed no glass transition temperature and melting temperature in their DSC thermograms. All the polymers decomposed at around 400℃ and 500℃ in nitrogen and had 88∼93% residual weight at 500℃.

Dicyanovinyl기를 포함하는 Polyurethane의 합성과 그들의 열적성질

김상태,김병구,공명선 단국대학교 신소재기술연구소 1992 신소재 Vol.2 No.-

주쇄에 enaminonitrile을 포함하는 polyurethane의 성질을 조사하기 위하여 먼저 p-bis-(1-chloro-2,2-dicyanovinyl)benzene(1)에 2-(N-methylamino)-ethanol과 4-piperidinol을 반응시켜 p-bis[1-[N-mthyl-N-(hydroxyethyl)amino]-2,2-dicyanovinyl]benzene(2)과 p-bis[α-[1-(4-hydroxypiperidinyl)-β,β-dicyanoviny]]benzene(3)을 합성하였다. 이들을 각각 hexamethylene diisocyanate(HDI), tolylene-2,4-diisocyanate(TDI), diphenylmethane-4,4'-diisocyanate(MDI)와 반응시켜 polyurethane을 얻었다. 또한 모델 화합물은 1과 phenylisocyanate의 반응에 의하여 얻었으며, 중합체의 화학적 구조는 모델 화합물과 비교에 의하여 분석하였다. 열적성질은 DSC와 TGA로 측정하였는데 2로부터 얻어진 polyurethane은 272-302℃에서 발열피크를, 3에서 얻어진 중합체는 315-323℃에서 큰 흡열피크를 보여주었다. 특히 2에서 얻어진 중합체들은 열경화후 불용성 중합체가 얻어졌으며, 3을 사용한 중합체는 큰 변화가 없었다. TGA 분석에서 500℃에서의 잔사량은 2의 중합체의 경우 55-68%이었으며 3의 중합체는 43-55%이었다. In order to investigate the properties of polyurethanes with enaminoitrile units in the main chain, p-bis[1-[N-methyl-N-(hydroxyethyl)amino)-2,2-dicyanovinyl]benzene(2) and p-bis[α-[1-(4-hydroxypiperidinyl)-β,β-dicyanovinyl]]benzene(3) were synthesized by reacting p-bis(1-chloro-2,2-dicyanovinyl) benzene (1) with 2-(N-methylamino)ethanol and 4-piperidinol. The polyurethanes were obtained from 2 and 3 with hexamethylene diisocyanate (HDI), tolylene-2,40diisocyanate (TDI), diphenylmethane-4,4'-diisocyanate (MDI), respectively. Before the polymer synthesis, model compound has been also obtained from phenylisocyanate with 1, and the chemical structure of polyurethane was analyzed by comparison with model compound. the thermal properties were measured by DSC and TGA, the polyurethanes obtained from 2 showed a large exothermic peak at 272-302℃, and those obtained from 3 was showed large endothermic peak at 315-323℃. Especially, polymer obtained from 2 gives insoluble polymer after heat curing, whereas the polymers derivied from 3 unchanged in their solubility. In the case of polymers from 2, residual weight is in the range of 55-68% at 500℃, and polymers from 3 were in 43-55%.

PEG를 주쇄에 포함하는 알키드 레진의 미립자들의 분산효과에 관한연구

정세화,김병구,김창배,공명선 단국대학교 신소재기술연구소 1993 신소재 Vol.3 No.-

Alkyd resin의 분산제로서의 응용성을 알아보기 위하여 여러 가지 분자량의 PEG와 phthalic anhydride로부터 합성된 diacid와 stearic acid와 1,1,1-trimethylolethane으로부터 합성된 diol과의 축합중합에의하여 여러 가지조성의 alkyd resin을 합성하였으며 이들을 trichloroethane(TCE)용매 중에서 분산시 투광도, 시간별 침강속도 및 합성한 alkyd resin의 HLB값 등을 측정하였다. 실험결과 본 alkyd resin은 수지중에 친수성 부분과 소수성 부분을 가지고 있어 비교적 극성인 미립자들이 비극성 용매중에서 고르게 분산되었으며 PEG 1,000을 사용하여 합성한 alkyd resin(HLB값은 10.19)와 TCE용매 중에서 미립자들의 분산성이 가장 우수하였다. 또한 PEG분자량 증가와 함께 친수성 부분이 증가되어 분산성이 떨어짐을 알 수 있었다. Alkyd resins were prepared from phthalic anhydride, polyethylene glycol, stearic acid and 1,1,1-trimethylolethane. These product have both hydrophilic and lipophilic part. Dispersion tests were carried out spectrophotometrically in 1,1,1-trichloroethane using particles. Particles dispersion with alkyd resin showed that it was maximum when molecular weights of hydrophilic and lipophilic part were close to one. This happened when alkyd resin was prepared from PEG 1,000. This result was turned out to agree well with HLB value 10∼11.

Humidity-Sensitive Properties of Polyelectrolytes Containing Alkoxysilane Crosslinkers

Gong, Myoung-Seon,Lee, Chil-Won,Park, Hyung-Seok The Polymer Society of Korea 2004 Macromolecular Research Vol.12 No.3

We have prepared new polyelectrolytes containing trialkoxysilyl groups by copolymerizing 3-(trimethoxysilyl)propyl methacrylate (TSPM) with either [2-(methacryloyloxy)ethyl]trimethyl ammonium chloride (METAC), [2-(methacryloyloxy)ethyl]dimethyl propyl ammonium bromide (MEDPAB), or [2-(acryloyloxy)ethyl]trimethyl ammonium chloride (AETAC). The copolymers TSPM/METAC, TSPM/MEDPAB, and TSPM/METAC having compositions of 15/85, 10/90, and 5/95, respectively, were self-crosslinkable polyelectrolytes that possess humidity-sensitive properties. We measured the impedances of the copolymers at various relative humidities (RHs) and found that the resistance was dependent on the content of METAC, MEDPAB, or AETAC. The impedance changed from 10$\^$7/ $\Omega$ at 20% RH to 10$^3$ $\Omega$ at 95% RH, which is quite a suitable range for a humidity sensor that is to be utilized at ambient humidity. We also performed tests of the materials temperature dependence, hysteresis, response time, and water durability.

Fluorescent Polyurethane Foams Containing Red Fluorescent Perylene Chromophore

Myoung-Seon Gong,Ohyoung Kim 한국공업화학회 2004 Journal of Industrial and Engineering Chemistry Vol.10 No.5

Preparation and Properties of Dicyanovinyl - and Arylate - Containing Poluazomethines

Gong, Myoung Seon,Lee, Seung Jae,Yoo, Ji Heon 한국공업화학회 1995 Journal of Industrial and Engineering Chemistry Vol.1 No.1

Polyazomethines containing dicyanovinyl and arylate moieties have been prepared by copolycondensation reaction of p-bis[1-(4-formylphenoxy)-2,2-dicyanovinyl]benzene (2) and p-formylphenyl terephthalate (3) with 4,4' oxydianiline (ODA). The copolymers with different amount of 2 and 3 were prepared by changing the ratio of two monomers. Two model azomethine compounds were prepared for the condition of the polymer formation and the characterization of polymers. The resulting polyazomethines were partially soluble in polar aprotic solvents such as NMP, DMF and DMSO and insoluble in chloroform and acetone. The solubility was improved with the increase of 2units in the polymer backbone in NMP. The polymers underwent a curing reaction around at their exotherms to give completely insoluble material and show 73∼83% of residual weight at 500℃ and 55∼75% at 600℃.

Highly efficient blue OLED based on 9-anthracene-spirobenzofluorene derivatives as host materials

Gong, Myoung-Seon,Lee, Hyun-Seok,Jeon, Young-Min Royal Society of Chemistry 2010 Journal of materials chemistry Vol.20 No.47

<P>A novel spiro[benzo[<I>c</I>]fluorene-7,9′-fluorene](<B>SBFF</B>)-based blue host material, 9-(10-phenylanthracene-9-yl)<B>SBFF</B> (BH-9PA), 9-(10-(naphthalene-1-yl)anthracene-9-yl)<B>SBFF</B> (BH-9NA) and 9-(10-(4-(naphthalene-1-yl)phenyl)anthracene-9-yl)<B>SBFF</B> (BH-9NPA) were successfully prepared by reacting 9-bromo-<B>SBFF</B> (<B>2</B>) with 10-phenylanthracene-9-yl boronic acid, 10-(naphthalene-1-yl)anthracene-9-yl boronic acid and 10-(4-(naphthalene-1-yl)phenyl)anthracene-9-yl boronic acid through the Suzuki reaction, respectively. Bis[4-(di-<I>p</I>-<I>N</I>,<I>N</I>-diphenylamino)styryl]stilbene (DSA-Ph) and <I>N</I>,<I>N</I>-diphenyl-<I>N</I>′,<I>N</I>′-dim-tolyl-<B>SBFF</B>-5,9-diamine (BD-6MDPA) were used as dopant materials. Blue OLEDs with the configuration ITO/DNTPD/NPB/host : 5% dopant/Alq<SUB>3</SUB>/Al-LiF were prepared from the three host materials doped with DSA-Ph and BD-6MDPA dopants and the device composed of BH-9PA doped with DSA-Ph and BD-6MDPA showed blue EL spectra at 468 and 464 nm at 7 V and luminance efficiencies of 7.03 and 6.60 cd A<SUP>−1</SUP>, respectively.</P> <P>Graphic Abstract</P><P>Blue OLEDs with the configuration ITO/DNTPD/NPB/host : 5% dopant/Alq<SUB>3</SUB>/Al-LiF were prepared from the three host materials doped with DSA-Ph and BD-6MDPA dopants and the device composed of BH-9PA doped with DSA-Ph and BD-6MDPA showed blue EL spectra at 468 and 464 nm at 7 V and luminance efficiencies of 7.03 and 6.60 cd A<SUP>−1</SUP>, respectively. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c0jm00593b'> </P>

New Electrophillic Olefin Initiators Containing Anionic Leaving Group for Cationic Polymerization

공명선(Myoung Seon Gong),H . K . Hall 한국고분자학회 1987 한국고분자학회 학술대회 연구논문 초록집 Vol.1987 No.10