폴리에스터계 분체도료용 경화제 N1,N1,N4,N4-Tetrakis(hydroxethyl) cyclohexane-trans-1,4-dicarboxamide의 제조 및 특성

정홍련 ( Hong Ryun Jung ),허준 ( Joon Heo ),이완진 ( Wan Jin Lee ),김형진 ( Hyung Jin Kim ),임형수 ( Hyung Soo Lim ) 한국공업화학회 2009 공업화학 Vol.20 No.2

폴리피롤/설폰화 폴리(2,6-디메틸-1,4-페닐렌 옥사이드) 복합전극의 제조 및 특성

허양일(Yang Il Huh),정홍련(Hong Ryun Jung),이완진(Wan Jin Lee) 한국고분자학회 2007 폴리머 Vol.31 No.1

초등학생 정서지능 향상을 위한 정서교육 일 모형으로서 용서교육 프로그램 개발

김광수 ( Kwang Soo Kim ),이명경 ( Myung Kyung Lee ),정태희 ( Tae Hee Jung ),정여주 ( Yeo Ju Chung ),우홍련 ( Hong Ryun Woo ) 한국초등교육학회 2007 초등교육연구 Vol.20 No.3

본 연구는 초등학교 아동들의 정서교육을 위한 구체적 적용 주제영역으로 ``용서``발달을 설정하고, 초등학생 정서지능 향상을 위한 정서교육의 일 모형으로서 용서교육 프로그램을 개발, 현장에 적용하고 그 효과를 검증하고자 실시되었다. 연구는 용서 및 정서지능 관련 문헌 분석, 예비 프로그램 개발, 예비 프로그램 실시 및 분석, 본 프로그램 매뉴얼 및 활동지 구성, 사전검사 실시, 본 프로그램 실시, 사후검사 실시, 자료 처리 및 분석의 과정을 거쳐 진행되었다. 연구대상은 서울시 소재 D, J, W 초등학교 학생 173명(실험집단 85명, 통제집단 88명)으로 프로그램 실시와 사전 사후 검사(용서, 정서지능, 학교생활적응)를 실시하고 분석하였다. 연구결과를 요약하면 다음과 같다. 첫째, 용서교육 프로그램을 실시한 실험집단은 통제집단에 비해 전체 용서수준이 유의미하게 증가하였으며, 용서수준의 하위변인인 인지적 용서, 정서적 용서, 행동적 용서수준도 모두 유의미하게 증가하였다. 둘째, 용서교육 프로그램을 실시한 실험집단은 통제집단에 비해 전체 정서지능이 유의미하게 증가하였고, 정서지능의 하위변인인 정서인식 및 표현, 감정이입이 유의미하게 증가하였으며. 사고촉진, 정서조절, 정서활용에서는 유의미한 증가가 나타나지 않았다. 셋째, 용서교육 프로그램을 실시한 실험집단은 통제집단에 비해 전체 학교생활적응정도가 유의미하게 증가하였으며 학교생활적응정도의 하위변인인 교사관계, 교우관계, 수업태도, 학교규칙도 모두 유의미하게 증가하였다. 이러한 결과는 실험집단의 각 회기별 집단참여일지, 진행자의 관찰기록 및 평가(제안), 실험집단참여 학생들의 프로그램 평가 설문 등의 자료분석에 의해 지지되고 보충, 심화되었다. 본 연구 결과는 용서교육 프로그램이 정서지능 교육 프로그램 개발의 일 모형으로서 기능하여 인간의 다양한 정서적 능력을 개발, 향상시키는 교육 프로그램 개발에 활용될 수 있음을 시사하고 있다. The purpose of study was to develop a forgiveness education program on elementary school students` emotional intelligence and examine it`s effects. The subjects of this study are 173 fifth and sixth grade students who were divided into an experimental group(85 students) and a control group(88students). The research design of this study is based on a pre-test, a post-test between the both groups. With the test data, the students feedbacks were collected to identify the subjects` responds to the program. The quantitative results of this study are as follows: First, the experimental-group having performed forgiveness education program has increased in the level of forgiveness and made a considerable increase in the sub-areas of forgiveness(emotion, cognition, and behavior) than the control group has. Second, the experimental group with forgiveness education program has improved in the level of emotional intelligence and showed a significant increase in the sub-areas of emotional intelligence(emotional recognition and expression, empathy) than the control group has. Third, the experimental-group having performed forgiveness education program has increased in the level of school adjustment and made a considerable increase in the sub-areas of school adjustment(teacher-relationship, friend-relationship, study attitude, school norm) than the control group has. These results were supported and intensified by qualitative data based on comment papers and program evaluation questionnaire. This study shows that forgiveness education program can be used as a model for developing various human emotional abilities and can also be used as a systematic personality education program for developing sound emotion, morality and character in education fields.

폴리머전지용 Sulfonated-SEBS/SiO_2/가소제 고분자전해질 제조 및 특성

정홍련,이무성,김종호,양갑승,이완진 한국공업화학회 2002 응용화학 Vol.6 No.1

SEBS ionomer for polymer electrolyte was prepared with ion capacitance. Sulfonated-SEBS was enough to use for polymer electrolyte membrane. Sulfonated-SEBS/SiO_2/plasticizer composite polymer electrolyte for polymer battery was fabricated with fumed silica. LiClO_4 or LiCF_3SO_3 used as a salt, EC/PC (1:1) as solvents, Si0_2 as a filler, and DBP as a plasticizer, respectively. The ionic conductivity is enhanced with increasing the content of silica. However, if the content of silica is too much, the ionic conductivity is decreased due to the restriction of ionic movement. The ionic conductivity is showed up to 2.6 × 10^-3 S/cm when the content of silica was 10 wt.% and the LiC1O_4 used as a salt.

고분자 전지용 Polypyrrole/Sulfonated-poly(2,6-dimethyl-1,4-phenylene oxide) 복합전극의 전기화학적 특성

정홍련,김찬,양갑승,이완진 한국공업화학회 2004 응용화학 Vol.8 No.1

Polypyrrole/PPO and polypyrrole/SPPO, conducting polymer composite, were made by a oxidative chemical polymerization with changing the contents of pyrrole and PPO using FeCl₃ act as a dopant and a initiator. The electrode was made by hot press on Cu exmat after mix conducting polymer composite and Super-P, and was examined electrochemical characteristics to penetrate to 1 M LiClO₄ + PC/DMC. The charge-discharge performance of the PPy/SPPO composite electrode was increased the extent of about 50 % compared to that of PPy/PPO. The reason is that the miscibility, contact area and affinity are promoted owing to the effect of sulfonation.

고분자전해질 연료전지용 Sulfonated-PPO/Sulfonated-SEBS 복합막 제조 및 특성

유경숙,정홍련,이무성,김종호,양갑승,이완진 한국공업화학회 2002 응용화학 Vol.6 No.1

Both PPO, poly (2,6-dimethyl-1,4-phenylene oxide) and SEBS, poly( styrene-ethylenebutylene-styene) were sulfonated, respectively, using chlorosulfonic acid as a sulfonating agent and 1,2-dichloroethane as a solvent. Also, Sulfonated-PPO/ Sulfonated-SEBS composite membranes for PEMFC were prepared. The proton conductivity of SPPO/SSEBS(1:1) composite membrane is enhanced up to 1.3 x 10^3 S/cm due to the increase of water swelling, the rise of compatibility between two phases, and the decrease of interfacial resistance.

Preparation of RuO₂/PAN-Based Carbon Nanofiber Web by Co-electrospinning and Its Electrochemical Property

Choi, Gyoung-Rin,Ju, Young-Wan,Jung, Hong-Ryun,Kim, Chan,Yang, Kap-Seung,Lee, Wan-Jin 한국공업화학회 2005 응용화학 Vol.9 No.1

The RuO₂/carbon fiber nanocomposite webs were prepared by a co-electrospinning technique in order to use as electrodes of supercapacitor. At first, the PAN-RuO2 fiber web was prepared by an electrospinning technique to use the mixed solution of both polyacrylonitrile (PAN) in N,N-dimethylformamide (DMF) and 10 to 20 wt.% ruthenium oxide hydrate (RuO₂). The electrospun PAN-RuO₂ fiber web was stabilized at 280C, and then carbon-RuO₂ nanofiber web was synthesized by activating at 800 C in the steam atmosphere. The specific capacitance is increased with increasing RuO2 contents. But the specific capacitance is decreased at 20 wt.% RuO₂/carbon fiber nanofiber. The specific capacitance of 10 wt.% RuO₂/carbon, 15 wt.% RuO₂/carbon, 20 wt.% RuO₂/carbon and activated carbon nanofiber or nanofiber composite electrode are 365, 461, 390, 140 Fig, respectively at lmA/Cm2. In the case of RuO₂ addition, the specific capacitance is improved due to the synergic effect of pseudocapacitance.

Preparation of Manganese/PAN-based Carbon Nanofiber Web by Co-electrospinning

Choi, Gyoung-Rin,Ju, Young-Wan,Jung, Hong-Ryun,Kim, Chan,Yang, Kap-Seung,Lee, Wan-Jin 한국공업화학회 2005 응용화학 Vol.9 No.1

We, in this study, fabricated and applicated MnO₂/carbon fiber nanocomposite web as electrode for supercapacitors prepared by co-electrospinning technique. At first, the PAN-Mn₃O₄ fiber web was prepared by an electrospinning technique to use the mixed solution of both polyacrylonitrile (PAN) in N,N-dimethylformamide (DMF) and 5 ~ 20 wt.% manganese oxide hydrate (Mn₃O₄). The electrospun PAN-Mn₃O₄ fiber web was stabilized at 280℃, and then carbon-Mn₃O₄ nanofiber web was carbonized at 1000℃ in the nitrogen atmosphere. The activated carbon/Mn0₂ electrospun fiber web was synthesized by activating at 800℃ in steam atmosphere. The structure of manganese oxide was changed that Mn₃0₄ was changed Mn0₂ during the carbonization and activation of nanocomposite web. The specific capacitance is increased with increasing Mn₃O₄ contents was 15 wt.%. But the specific capacitance is decreased at 20 wt.% Mn₃O₄/carbon nanofiber. The specific capacitances of 5 wt.% Mn₃O₄/carbon, 10 wt.% Mn₃O₄/carbon, 15 wt.% Mn₃O₄/carbon, 20 wt.% Mn₃O₄/carbon and activated carbon nanofiber or nanofiber composite electrode are 170, 230, 260, 175, 140 F/g, respectively at lmA/Cm². In the case of Mn₃O₄ addition, the specific capacitance is improved due to the synergic effect of pseudocapacitance. But the diameter of carbon fiber increased with the contents of Mn₃O₄ is increased. So the electro double layer capacitance is decreased.

Preparation of Electrode of MWCNT/PAN-Based Carbon Nanofiber Web Coated PPy for a Supercapacitor

Ju, Young-Wan,Choi, Gyoung-Rin,Jung, Hong-Ryun,Kim, Chan,Yang, Kap-Seung,Lee, Wan-Jin 한국공업화학회 2005 응용화학 Vol.9 No.1

At first, the mixed solution of both polyacrylonitrile (PAN) in N,N-dimethylformamide (DMF) and multi-walled carbon nanotube (MWCNT) was electrospun so as to make PAN-based nanocomposite fiber web. The electrospun PAN-based carbon nanofiber web was prepared by stabilizing at 280℃, and by activating at 800℃ in stea m atmosphere. Finally, the polypyrrole/MWCNT-carbon nanofiber composite web was prepared by polymerizing pyrrole to use Fecl₃.6H₂O as an oxidant on the carbon-MWCNT nanofiber. The electrodes of (1) bared carbon (2) MWCNT-carbon (3) PPy/carbon (4) PPy/CNT-carbon were prepared for a supercapacitor. Out of the electrodes, the electrochemical performance of 20 wt% polypyrrole /carbon-MWCNT composite nanofiber web electrode was the best as a value of 333F/g. This is because of the synergic effect of non-faradaic and faradaic mechanism.

Polypyrrole / Sulfonated - poly (2,6-dimethyl-1,4-phenylene oxide) 복합체의 제조와 전기적 성질

이무성,김종호,양갑승,이완진,유경숙,정홍련 한국공업화학회 2001 응용화학 Vol.5 No.2

The conducting composites were prepared by the chemical oxidative polymerization using pyrrole and poly(2,6-dimethyl-l,4-phenylene oxide(PPO) or sulfonated-poly(2,6-dimethyl-1,4-phenylene oxide(SPPO) in chloroform. The pyrrole was protonated and polymerized using iron(III) chloride (FeCl₃). The electrical conductivity of PPy/SPPO composites were increased 1 or 2 order with the amount of PPy compared to PPy/PPO composites. The introduction of sulfonic group to PPO results in the coulombic interaction between each phase of composites. As the results, the effect of miscibility was enhanced between each phase. The electrical conductivity was increased up to 2.14 S/㎝ with amount of 25 wt% PPy.