변성 셀룰로오즈막의 표면물성과 혈액 적합성

이순홍,허훈,이영무,김진일,박영훈 ( Soon Hong Lee,Hoon Huh,Young Moo Lee,Jin Il Kim,Young Hoon Park ) 한국공업화학회 1993 공업화학 Vol.4 No.1

생체의료용 재료로서 응용 가능한 고분자 전해질복합체와 그라프트 공중합체를 수용성 고분자 유도체로부터 제조하였다. 고분자 전해질 복합체들은 카르복시메틸 셀룰로오즈(CMC)와 젤라틴으로부터 제조하였다. 그라프트 공중합체는 메틸셀룰로오즈(MC)에 아크릴산을 그라프트반응시켜 합성하였고, 이 그라프트 공중합체와 젤라틴의 고분자 전해질 복합체도 제조하였다. 그라프트 공중합체와 고분자 전해질 복합체들을 화학가교법과 열처리법으로 제조시 최적조건들을 조사하였다. 예비실험 결과 이들 재료들이 생체의료용 재료로서의 응용 가능성이 있는 것을 알았다. Polyelectrolyte complexes and graft copolymers as biomaterials were synthesized from the water soluble cellulose derivatives. Polyelectrolyte complexes have been prepared from carboxymethyl cellulose (CMC) and gelatin. Graft copolymers(Mc-g-AA) were synthesized by grafting acrylic acid (AA) onto methyl celulose(MC). (Mc-g-AA) and gelatin polyelectrolyte complexes were also prepared. The optimum conditions of each sample were investigated after chemical crosslinking or heat treatment. The preliminary results show that these materials might be interesting for biomedical applications.

李朝時代의 服飾禁制

李順洪 이화여자대학교 가정대학 의류직물학과 1973 의류직물연구 Vol.- No.3

The costume regulation of Yi-Dynasty as within the boundary of those Sila and Koryo Dynasty. In the period of Yi-Dynasty, the society was an organization of bureaucratic feudalism with flunkeyism toward the big nation (old china). During the time, Seoul, the capital city where the royal family house in, was the center of fashion and extravagance. The extravagance was mainly actuated by the luxurious goods which were imported illegally as a part of official trade, and it was intensified by the fundamental dosire for aesthetic feeling and the vanity of the people. Ultimately, the extravagance brought the costume-regulation because it had injured the society by collapsing the class system and social order. Extravagance has no limit while wealth has. The costume-regulation was to prevent to smuggle and to spread the thought of thrift throughout poople. The regulation extended to every details of costume, shapes of clothes, and their decorations, textiles, the colors, wigs, hot, shoes, wedding dress-suit etc Moreover, the dynasty made, an age-limit in which one should get married. It was to break down an evil custom that one passes his marriageable ago because ago bocause ho does not have sufficient money for wodding ceremony which require a groat abuse for vanity and extravagance. Desire for luxurious silk stimulated disectly the vanity and extravagance of the people. It was also the main reason that made wedding ceremony so luxurious silk was used as an important part of hat and shoes. Silk was, thorofore, the most frequent object of costume regulation. According to the costume regulation of Yi-Dynasty, only Dang-Sang-Kwan and his wife had the permission to have clothes made of rat-skin (leather) or weasel-skin. Only Dang-Sang-Kwan could have shoos decorated with gold-pieces and wear a purple. However, he, very free from the regulation, had the permission of wearing a silk dress-suit only when he met ambassador. To show flunkyism, unique to Korea, clothes of yellow and red in colors were not permitted to wear except Kings of Yi-Dynasty because the colors symbolized old Chinese King. As it was very difficult to gather enough gold and silver needed to present to MyungDynasty (one of the dynasties of old China). Yi-Dynasty regulated the use of gold and silver for domestic purpose. In the Yoong- Jo era, it because a method of extravagance though it had had just. adecorative function for women. As it costs so much and caused bankruptcy, the dynasty regulated. the use of wigs and let them use caps or hats decorated with artificial flowers instead of wigs. The aim of regulation of Yi-Dynasty was to restrain extravagance and use of foreign' goods. However, the real purpose of the regulation was to preserve the class system of Yi-Dynasty.

산업폐수내 독성함유 Paint Sludge의 처리 및 재활용을 위한 활성 Powder 제조에 관한 연구

이순홍,노태준,박종철,김광국 안양대학교 산업기술연구소 2003 自然科學硏究 Vol.10 No.-

자동차 천정재용 환경친화적 일체성형 다층구조 초경량 복합신소재 개발에 관한 연구

이순홍 안양대학교 산업기술연구소 2002 自然科學硏究 Vol.9 No.-

현재 자동차 부품으로 사용되고 있는 플라스틱 소재는 사용목적에 따라 플라스틱 재료를 복합적으로 사용하여 그 요구조건을 만족하고 있다. 이에 따라 부품 제조공정은 복잡한 다단계과정을 거치면서 악취, 분진 및 소음 등의 환경문제를 야기하고 이종재료의 사용으로 인하여 플라스틱 복합재료의 재활용이 불가능하여 소각처리에 의한 대기오염을 발생시킨다. 따라서, 본 연구에서는 다층구조를 갖는 플라스틱 복합신소재를 단일공정상 일체성형 가능하도록 제조공정을 설계하고 기재인 열가소성 섬유에 강화섬유로 유기계 열가소성 섬유가 보강된 초경량 복합신소재를 제조하여 자동차 천정재로서의 요구물성 및 폐기시 재활용성을 기존 사용중인 천정재 소재와 비교평가 하였다. 본 연구개발 초경량 복합신소재는 경량화, 고강도, 저비중 등의 기계적 물성과 흡차음특성, 단열특성 및 내환경성 등의 기능적 물성이 우수하였으며 특히, 유기계 강화섬유가 함유되어 폐기시 그대로 용융하여 polymer blending 과정을 통해 100%의 재활용성을 확인하였다. In order to obtain light composite materials for automobile head liner with considered reusability, mechanical and functional properties, matrix/organic fiber composites containing multi-layer foamed structure were prepared by using engineering thermoplastics in the process of integral formation. The light composites in the form of polypropylene fiber(PPF) as a matrix, nylon(PAF), polyester(PETF), vinylon(VF) fiber to reinforce the PPF showed high mechanical properties(tensile strength ; 660kgf/㎠, flexural strength ; 253kgf/㎠, impact strength ; 109kg/㎠) and functional properties such as specific gravity, adiabatic performance, durability, sound adsorption and transmission compared to the existing(resin felt, paper board) automobile head liner. Especially. the light composites could be 100% recycled through the process of melting polymer blend.

여자 상업 고등학교에 관한 연구 : Ⅱ. 교육이념과 실제

이순홍 이화여자대학교 사범대학 교육학과 1968 교육 연구 Vol.- No.31

비할로겐 M-P 난연제 제조 및 복합재료 응용 연구

이순홍 한국안전학회 2009 한국안전학회지 Vol.24 No.6

In order to improve flame retardancy, the halogen free organic melamine phosphate(M-P) flame retardant was synthesized from melamine and phosphoric acid by the reaction of precipitation. The ignition test was carried out preparing hybrid flame retardant compound(HbFRC) consisting of organic M-P and inorganic Mg(OH)2 as a flame retardant in the polyolefin resins. The flame retardancy and mechanical properties of flame retardant aluminum composite panel(HbFRC-ACP) were performed to investigate the possibility of the composite material, which was contained M-P, as a inner core for HbFRC-ACP. For this study, the results of ignition test indicate that a char formation and drip suppressing effect, and combustion time reduced as the content of M-P increased. The limited oxygen index(LOI) values were measured 17.4vol% and 31.5vol% for LDPE only and HbFRC-3(M-P content: 15wt%), respectively. And it was verified that the HbFRC-3 was needed more oxygen quantity with the increase of M-P content when it combustion. Also, the results from thermogravimetric analysis were observed endothermic peak at 350℃ and 550℃, it was confirmed predominant thermal stability though the wide temperature range by the mixture of M-P and Mg(OH)2. The LDPE-ACP (using only LDPE as a inner core), 35.13kW/㎡ of heat release rate(HRR) and 13.43MJ/㎡ of total heat release(THR) were measured while the HbFRC-ACP, 10.44kW/㎡ of HRR and 1.84MJ/㎡ of THR were measured by results of cone calorimeter test. In case of HbFRC-ACP, the average gas emission amount of CO and CO2 could be decreased down to 25% and 20%, respectively, in comparison with LDPE-ACP. The mechanical properties such as tensile strength, bending strength and adhesion strength of HbFRC-ACP were revealed slightly high values 54N/㎟, 152N/㎟ and 120N/25mm, respectively, compared with LDPE-ACP. It was confirmed that flame retardancy was improved with the synergy effect because of char formation by M-P and hydrolysis by Mg(OH)2. The result of this study suggest that HbFRC can be applied for an adequate halogen free flame retardant composite material as a inner core for ACP.

변성 셀룰로오즈 막내의 물의 상태

이순홍,이영무,김진일,김재진 ( Soon Hong Lee,Young Moo Lee,Jin Il Kim,Jae Jin Kim ) 한국공업화학회 1993 공업화학 Vol.4 No.1

두 종류의 변성 셀룰로오즈 막내의 물의 상태를 시차열분석계를 이용하여 분석하였다. 셀룰로오즈막들은 카르복시메틸 셀룰로오즈(CMC)-젤라틴 고분자전해질 복합체막과 아크릴산 가교 메틸셀룰로오즈(MC)전해질막이다. 동결수(자유수)와 비동결수(결합수) 양을 측정하여서 막을 통한 용질들의 투과도와의 관계를 조사하였다. 막내의 물의 상태는 막의 조성, 모폴로지, 그리고 수화도의 영향을 받는 것을 알았다. 수화된 막들을 통한 확산 투과도의 차이를 자유수와 결합수의 차이로 설명하였다. The state of water in various modified cellulose membranes, such as [carboxymethyl cellulose(CMC)-gelatin] polyelectrolyte complex, methylcellulose(MC) grafted with acrylic acid(AA), [(MC-g-AA)-gelatin] polyelectrolyte complex, were determined by differential scanning calorimetric technique. The amounts of freezing (free) and nonfreezing(bound) water were estimated to determine the permeabilty coefficient of solutes through membranes. The states of water in membranes were influenced by the states of the composition, morphology, and their water content. The difference in diffusive permeability through the water-swollen membranes can be explained by the difference in the free and bound water content.

Halogen-Free 난연제를 포함하는 파우더 코팅소재 제조 및화재안전성 연구

이순홍,정화영,김대인,노태준 한국안전학회 2011 한국안전학회지 Vol.26 No.4

Halogen free intumescent flame retardants(IFRS), such as the mixture of melamine phosphate(MP) and char forming agents(pentaerythritol(PER), di-pentaerythritol(DiPER), tris(2-hydroxyethyl) isocyanurate(THEIC)), were prepared and characterized. Polypropylene(PP)/IFRS composites were also prepared in the presence of ethylene diamine phosphate(EDAP) as a synergist and used into flame retardant PP powder coatings. Thermoplastic PP powder coatings at 20 wt% flame retardant loading were manufactured by extruded and then mechanical cryogenic crushed to bring them in fine powder form. These intumescent flame retardant powder coatings(IFRPCS) were applied on mild steel surface for the purpose of protection and decorative. It is a process in which a IFRPCS particles coming in contact with the preheated mild steel surface melt and form a thin coating layer. The obtained MP flame retardant was analyzed by utilizing FTIR, solid-state 31P NMR, ICP, EA and PSA. The mechanical properties as tensile strength, melt flow index(MFI) and the thermal property as TGA/DTA and the fire safety characteristics as limiting oxygen index(LOI), UL94 test, SEM were used to investigate the effect of IFRPCS. The experimental results show that the presence of IFRS considerably enhanced the fire retardant performances as evidenced by the increase of LOI values 17.3 vol% and 32.6 vol% for original PP and IFRPCS-3(PP/MP-DiPER/EDAP), respectively, and a reduction in total flaming combustion time(under 15 sec) in UL94 test of IFRPCS. The prepared IFRPCS-3 have good comprehensive properties with fire retardancy 3.2 mm UL94 V-0 level, LOI value 32.6%, tensile strength 247.3 kg/cm2, surface roughness Ra 0.78 µm, showing a better application prospect. Through IFRPCs-2(PP/MP-PER/EDAP) and IFRPCs-3 a better flame retardancy than that of the IFRPCs-1(PP/MP/EDAP) was investigated which was responsible for the formed more dense and compact char layer, improved synergy effect of MP and PER/DiPER.

튜더시대 남자 헤어스타일 및 헤드기어에 관한 고찰

이순홍,김경희 誠信女子大學校 生活文化硏究所 2003 生活文化硏究 Vol.17 No.-

Clothing, based on human's body, represents the wearer's thoughts and feeling, and expresses cultural phenomena in that times. Hairstyle and Headgear are also important in indicating the external characteristics of clothing. There are lots of studies on women's head-dresses in western clothing history, but few on men's hairstyles and headgears. Its formula of diversity in forms and ornaments is something that changed. As the studies on the changes in designs and details of the past headgears could be applied to current fashion and become the sources of good inspiration in creating new designs, it could provide information to new direction. The scope of the study is Tudor period, that is Henry Ⅶ, Henry Ⅷ, and Elizabeth period. With related pictures, museum materials, and literatures, men's hair-styles, bonnet, coif, flat cap, and hat were reviewed on their various decorative characteristics.

서양복식사에 나타난 의상장식에 관한 연구

이순홍 服飾文化學會 2003 服飾文化硏究 Vol.11 No.1

This study analyzes the garment decorations in the history of western costume based on their kinds and techniques, and consider the beginning and the development of costume decoration. The purpose is to promote a historical understanding of modern ornamentation. Based on the theoretical background concerning the origin and purpose of costume decoration, its symbolism and its relationship with images, this study classified the techniques and kinds of ornament and considered each costumes by their decoration. 1. The ornament was originated from the primitive custom of coloring the skin for the purpose of protecting the body, symbolizing the tribe, indicating the calss, and threatening the enemies. As this custom changed into the decoration on the body as a form of tattoos or physical transformations, the practice of ornament seems to begin as a display of one's authority and wealth as well as a human instinct to decorate oneself beautifully. 2. The basic purpose of ornament is to look attractive by decoration oneself with ornaments. Addition of decorative design to the garment tends to complement the practical aspects of the whole clothing, and elevate is value and originality. 3. From the past, ornament has been used as a symbol of wealth and status. Originated from the desire to display one's authority and power and to receive respect from others, the people's interest in ornament have rising. 4. The kinds and techniques of ornament can be classified into the structural and applied decorations. The former is decorating a part of a garment, such as the neckline, collar, cuffs, or pockets. The latter includes braids, laces and embroideries. These ornament are diverse in their details and techniques, and should consider both functional aspects of clothing of clothing and its decorative functions emphasizing the aesthetic expressions. In the above considerations, we can see that costume ornament was most splendid in the premodern times and it was the simplest in the ancient times. And we also saw the possibility that decorative techniques could be created almost limitlessly.