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심색성 극세 폴리에스터 제조용 Poly(ethylene terephthalate/trimethylene terephthalate) (P(ET/TT))의 합성 및 특성
이종순,최영근,김도균,김갑진,Lee, Jong-Soon,Choi, Young-Gun,Kim, Do-Kyun,Kim, Kap-Jin 한국섬유공학회 2006 한국섬유공학회지 Vol.43 No.4
Polyester microfiber has usually greater dye uptake than normal denier polyester fiber at the same dyeing condition. Though polyester has high dye uptake, dyed microfiber fabric has not only low visual colour depth but also poor washing fastness property. In order to improve this dyeing property, poly(ethylene terephthalate/trimethylene terephthalate)(ET/TT) was synthesized with various TT content using DMT process. The feed ratio of TT was varied from 5-30 mol%. The content of TT unit in P(ET/TT) was higher than the feed ratio of TT. The physical properties, dyeing properties, and wet fastness of P(ET/TT) were investigated. Melting $point(T_m)$ and glass transition $temperature(T_g)$ of P(ET/TT) decreased with increasing content of TT unit. P(ET/TT) could be dyed at lower temperature than homo PET with increasing TT feeding content. Alkaline dissolution behavior of P(ET/TT) was also examined as a function of TT content.
글리옥심 리간드를 갖는 가교 폴리스티렌계 킬레이트 수지의 합성 및 특성
이종순,장태화,Lee, Jong-Sun,Jang, Tae-Hwa 한국섬유공학회 1997 한국섬유공학회지 Vol.34 No.9
Chelating resins of crosslinked polystyrene (PS) beads have been prepared by introduction of glyoxime group by subsequent reactions of acylation, oxidation and oximation with hydroxylamine. Ethylene glycol dimethacrylate (EGD) or tetraethylene glycol diacrylate (TGD) was used in the suspension polymerization system of styrene and divinylbenzene (DVB) in order to give hydrophilicity to the beads and 2, 2, 4-trimethylpentane was used as a diluent. It has been found that porous or reticular type PS beads having large surface area is obtainable from this system and they have high capacity of adsorbing metal ions such as $UO^{2+}_2, \;Cu^{2+}, \;Ni^{2+}$dissolved in water due to their high ability of chelation of glyoxime group and enhanced hydrophilicity of the resin due to the presence of hydrophilic crosslinking agent unit. It was also recognized that the largest capacity of adsorption was exibited at pH 4~5 and a high selective adsorption to $UO^{2+}_2$.
PVDF/Poly(ethylene-co-vinyl acetate) 블렌드의 혼화성이 PVDF의 결정구조와 결정화 속도에 미치는 영향(II)
이종순,김갑진,Lee Jong Soon,Kim Kap Jin 한국섬유공학회 2004 한국섬유공학회지 Vol.41 No.6
The crystal structure of the blends of poly(vinylidene fluoride) (PVDF) and poly(vinyl acetate)(PVAc), ethylene/vinyl acetate (20/80) copolymer (PEVAc80), and ethylene/vinyl acetate (30/70) copolymer (PEVAc70) has been studied using a polarizing microscope equipped with a heating stage and an FT -IR spectrometer. The spherulitic morphology in the PVDF/PEVAc blend appeared as three different types, i.e., lamellar splay, concentric, and spiral type. As crystallization temperature and the content of amorphous PVAc and PEVAc80 miscible with PVDF increase, concentric ring and spiral ring type spherulites are formed more easily than in the case of PVDF and a PVDF/PEVAc70 blend system. The extinction band periodicity between the bright zone and the dark zone in the ring-banded spherulites observed under a crossed polarization was found to increase with increasing content of PVAc and PEVAc. Furthermore, the periodic distance between neighboring spiral arms increased from the core to the outer edge, and this may be ascribed to the preferential rejection of PEVAc chains into the inter-spiral regions during crystallization. The FT-IR analysis of samples quenched from the melt to various temperatures shows increase in $\beta-phase$ content as the amounts of PVAc and PEVAc80 blended increase and as the quenching temperature is reduced. In conclusion, the crystal morphology and structure in the PVDFIPVAc and PVDF/PEVAc blend systems were shown to be highly associated with the degree of miscibility of an added amorphous polymer with PVDF.
공단량체 bisesterdiamide 'T3T-dimethyl'을 사용한 폴리(트리메틸렌테레프 탈레이트)계 폴리에스터아미드의 합성과 특성분석
이종순,오태환,김갑진,Lee, Jong Soon,Oh, Tae Hwan,Kim, Kap Jin 한국섬유공학회 2005 한국섬유공학회지 Vol.42 No.6
In order to impart new functions to poly(trimethylene terephthalate) (PTT) and to remove several well-known disadvantages of PTT such as changes in physical properties with ageing especially for undrawn and/or partially drawn PTT yarn a new type of polyesteramide based on PTT, poly(trimethylene terephthalate-co-trimethylene terephthalamide) [P(TT/TA)], has been synthesized using dimethyl terepthalate (DMT), T3T-dimethyl ((benzoic acid, 4-4'-[1-2-propanediylbis (iminocarbonyl)]bis-dimethyl ester) and 1,3-propanediol as monomers and tetraisopropyl titanate as a catalyst through a DMT process. The feed ratio of T3T-dimethyl was varied from $5-15mol\%$. The content of TA unit in P(TT/TA) was lower than the feed ratio of T3T-dimethyl. Intrinsic viscosity and melt viscosity of P(TT/TA) increased with increasing content of TA unit. Thermal properties of P(TT/TA) were also measured as a function of TA content using DSC and TGA.
커플러와 루프이음 방식을 적용한 프리캐스트 우각부 연결구조 성능 실험
이종순(J.S. Lee),이준경(J.K. Lee),이성형(S.H. Lee),노형민(H.M. Roh),김종현(C.H. Kim),신정열(J.R. Shin) 한국철도학회 2015 한국철도학회 학술발표대회논문집 Vol.2015 No.10
지상고가 형식의 도시철도는 도시미관을 저해하고, 소음/진동 등의 영향으로 민원이 자주 발생한다. 또한 지하 20~30m에 시공되는 지하철은 공사비가 고가이고 긴 환승 시스템의 단점이 있다. 이러한 문제점을 해결하는 저심도 도시철도의 본선 구조체를 개착식 프리캐스트 모듈식 구조체로 적용하는 시공기술 개발을 위한 연구가 진행 중이다. 본 논문에서는 저비용 저심도 도시철도 시스템에 적용되는 우각부 연결구조에 대한 성능평가 목적으로 연구를 수행하였다. 실험 조건은 우각부 철근의 커플러 연결, 루프 연결구조를 고려하였다. 실험 결과, 강결연결 형태의 커플러 연결이 구조적 성능이 가장 우수하였으나, 시공 효율성을 고려한 루프 이음도 소요 성능을 만족함을 확인하였다. Recent study about near-surface urban transit is proposed to overcome uneconomical problem of underground subway. Development of construction technology using open-cut precast modular structure for main structure of the near-surface urban transit is under way. In this paper, performance test of corner rigid joint of the modular structure is carried out. Loop connection, and coupler connection is considered. As a result of the test, the structural performance of coupler connection is more advantageous. However, loop connection, considering effective construction, also satisfies the performance requirements.