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유기황화합물 - Polyphenylenediamine 고분자 필름의 제막 특성
박수길,박종은,손원근,임기조,이주성 ( Soo Gil Park,Jong Eun Park,Won Keun Son,Kee Joe Lim,Ju Seong Lee ) 한국공업화학회 1997 응용화학 Vol.1 No.1
Polyphenylenediamine(PPD) film was prepared with organo sulfur compond (2-aminothiophenol, 1,2-ethanedithiol, and 2-aminoethaneethiol) adding lithium salt to increase conductivity for the case fo lithium secondary systhem. The thermal stability and morphology of conductive polymer synthesized were detcted by using SEM, TGA, DSC analysis. The elecrical conductivity were measured by four-probe method at N₂ atmosphere dry box. The electrical conductivity was showed good valuable about 1.2 x 10¹S/㎝ at room temperature.
전도성 Polyethyleneoxide 고분자전해질의 전기적 특성
박수길,김종진,손원근,이홍기,임기조,이주성 ( Soo Gil Park,Jong Jin Kim,Won Keun Son,Hong Kee Lee,Kee Joe Lim,Ju Seong Lee ) 한국공업화학회 1997 응용화학 Vol.1 No.1
The development of solid electrolyte in place of liquid electrolyte has been recently carried out actively compare with general use past days. In this study conductivities of polyethylene oxides(PEO), which [EO]/[LiClO₄], 2:1, 4:1, 6:1 and 8:1, were measured and also different solvents, respectively. The PEO electrolyte complexed with LiClO₄, when [EO]/[LiClO₄] ratio is 8, showed good conductivity(>10^(-5)S/㎝) at 25℃ in dry box. And dimethylcarbonate(DMC) compared with different solvents, it showed also high conductivity.
박수길,김종진,손원근,이창진,임기조,이주성 ( Soo Gil Park,Jong Jin Kim,Won Keun Son,Chang Jin Lee,Kee Joe Lim,Ju Seong Lee ) 한국공업화학회 1997 응용화학 Vol.1 No.1
Polymeric solid electrolytes have great advantages over liquid electrolytes in many respects such as high energy density, leak-proof, light weight, easy handling and wide range of operation temperature. This study was concentrated to research and develop solid polymer electrolyte(SPE) for Li secondary battery. We investigated the effects of lithium salt concentration, temperature dependence of conductivity and thermal stability of polyethylene oxide(PEO) electrolytes. The PEO electrolyte complexed with LiClO₄, at [EO]/[Li^+]ratio is 8, showed successful high conductivity(about 10^(-5)S/㎝) at 25℃ than other solvents.
로다민과 TPD 혼합형 유기초박막의 EL 소자의 표면특성
박수길,조성렬,손원근,이창진,조병호,임기조,이주성 ( Soo Gil Park,Seong Ryoul Cho,Won Keun Son,Chang Jin Lee,Byung Ho Cho,Kee Joe Lim,Ju Seong Lee ) 한국공업화학회 1997 응용화학 Vol.1 No.1
High performance organic electroluminescent(EL) devices which are composed of organic thin multilayer films are fabricated. The basic structure is hole-transport layer, emitting layer and electron transporting layer. The hole-transporting layer is an amorphous diamine film in which the only mobile carrier is the hole. The emitting layer is consisted of a host material(Alq3) and a guest emitting materials(Rhodamine 101 perchro-late(Red3)). The microscopic study on emitting layer was performed by confocal image system. In this study, we could good result with varing the thickness of emitting layer, 100Å of emitting layer with 3% of Red3 had a 2.3E+0.4(Alq3) and 1.65E(Red3) of EL, at 11V, operating voltage.
송원근,박수길,김영철,신동근 ( Won Keun Son,Soo Gil Park,Young Churl Kim,Dong Keun Shin ) 한국공업화학회 1998 공업화학 Vol.9 No.2
복합체 제조의 최적조건을 얻기 위해 페놀수지와 목분의 함량을 변화시켜 제조하고 그들의 기계적 성질을 측정하였다. 페놀수지의 함량이 45 wt%일때 가장 높은 기계적 강도를 나타내었다. 또한 폐놀수지와 목분 복합체의 기계적 성질을 개선하기 위해 폐놀수지의 개질제로서 폴리우레탄을 사용하였다. Isocyanate작용기를 갖는 폴리우레탄은 페놀수지와 잘 혼합되지 않기 때문에 상용성을 개선하기 위해 페놀 blocked 폴리우레탄을 합성하였다. 이들을 첨가한 복합체는 개질제 함량이 5 wt%에서 최대의 기계적 강도를 나타냈다. 또한 210℃에서 경화된 복합체의 기계적 강도가 150℃에서 경화된 것보다 우수하였다. Wood powder filled phenolic resin composites of different composition were prepared and their mechanical properties were investigated for optimum conditions. The composites showed maximum mechanical strength when the phenolic resin content was 45 wt%. Polyurethane prepolymer(PU) was evaluated as a modifier of the phenolic resin composites. Blocking of the isocyanates in the PU with phenol was necessary for homogeneous mixing of raw materials for the components. Maximum mechanical strength of the PU modified composites was observed when the PU content was 5 wt%. It was found that the mechanical strength of the composites cured at 210℃ were higher than those of the composites cured at 150 ℃.
Poly ( ether ether sulfone ) 의 합성과 술폰화의 최적조건
손원근,박수길 ( Won Keun Son,Soo Gil Park ) 한국공업화학회 1998 공업화학 Vol.9 No.2
본 연구에서는 열안정성 양이온 교환수지로 sulfonated poly(ether ether sulfone) (SPEES)을 합성하였고, SPEES는 hydroquinone과 dichlorophenyl sulfone으로 poly(ether ether sulfone) (PEES)을 합성한 후 슬폰화 되었다. FT-IR 스펙트럼 분석으로부터 1140cm^(-1)에서 SO₂의 비대칭 신축진동에 의한 흡수피크가 나타나고, 621cm^(-1)에서 S-C 진동에 의한 흡수피크가 나타나는 것으로 보아 술폰화가 되었음을 알 수 있다. IR 흡광도 의해 얻어진 슬폰화의 최적조건은 반응시간 3시간, 반응온도 30℃, chlorosulfonic acid의 농도가 150㏖%이었다. 최적조건으로 슬폰화된 PEES의 IR 흡광도에 의해 계산된 이온교환용량은 6.2meq/g이었고, 적정에 의해 얻어진 이온교환용량값과 유사하였다. 또한 금속이온이 흡착되었을 때 SPEES의 morphology는 작은 뇌, 혹, 좁쌀같은 형태가 나타나며, 표면의 조직은 더욱 조밀해진다. To synthesize cation exchange resin which has thermal stability, the sulfonated poly(ether ether sulforne) (SPEES) was obtained by sulfonation after synthesis of poly(ether ether sulfone) (PEES). It was prepared from hydroquinone and dichlorophenyl sulfone. From FT-IR results, the sulfonatian was confirmed by the bands of asymmetric 0=S=0 stretching of SO₃Na group at 1140cm^(-1) and S-C stretching at 621cm^(-1). The optimum condition of the sulfonation of PEES, based on IR absorbance, was 3 hr of reaction time, 30℃ of reaction temperature, and chlorosulfonic acid of 150 mol%. Ion exchange capacities calculated by the IR absorbance of PEES sulfonated in optimum condition was 6.2meq/g, which was nearly similar to the ion exchange capacity calculated by titration. When the metal ion was adsorved, small brain, lump, hulled millet shape and compact surface, were observed in the morphology of SPEES.