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표면 개질된 나노피브릴화 셀룰로오스를 이용한 에멀젼 안정화 및 고분자 입자 제조
김보영 ( Bo-young Kim ),문지연 ( Jiyeon Moon ),유명재 ( Myong Jae Yoo ),김선민 ( Seonmin Kim ),김정아 ( Jeongah Kim ),양현승 ( Hyunseung Yang ) 한국공업화학회 2021 공업화학 Vol.32 No.1
In this work, the surface of hydrophilic cellulose nanofibrils (CNFs) was modified precisely by varying amounts of cetyltrimethylammonium bromide (CTAB) to produce CNF-based particle surfactants. We found that a critical CTAB density was required to generate amphiphilic CTAB-grafted CNF (CNF-CTAB). Compared to pristine CNF, CNF-CTAB was highly efficient at stabilizing oil-in-water Pickering emulsions. To evaluate their effectiveness as particle surfactants, the surface coverage of oil-in-water emulsion droplets was determined by changing the CNF-CTAB concentration in the aqueous phase. Furthermore, styrene-in-water stabilized by CNF-CTAB surfactants was thermally polymerized to produce CNF-stabilized polystyrene (PS) particles, offering a great potential for various applications including pharmaceuticals, cosmetics, and petrochemicals.
한국과 서구의 블로그에 나타난 커뮤니케이션 방법에 관한 연구 : 싸이월드와 마이스페이스 사례를 중심으로
김정은(Jeongeun Kim),문지연(Jiyeon Moon),김종덕(Jongdeok Kim) 한국HCI학회 2008 한국HCI학회 학술대회 Vol.2008 No.2
1999년 미국에서 정보공유를 목적으로 블로그의 개념이 처음 도입되었다. 우리나라의 경우에도 2002년 말부터 본격적으로 대중에게 보급이 되었으며, 전통 블로그의 형태에서 홈페이지와의 결합을 통해 커뮤니티 형태의 독특한 형태로 발전해 나가고 있다. 이러한 독작적인 발전의 원인은 블로그가 한국사회가 요구하는 문화 커뮤니케이션 방향에 맞게 발전해 나가고 있기 때문이라 볼 수 있다. 오늘날 '세계는 점점 좁아지고 나라간 거리는 점점 가까워 진다 '라고 한다. 디자인 또한 유니버셜 디자인을 지향한다고 외치고 있다. 하지만 블로그를 통해 바라본 세계화는 결국 local을 무시할 수 없다는 것이다. 그렇기 때문에 본 연구는 지역 문화 관점에서의 비판을 통해 사회의 뿌리 깊은 문화적 속성과 인간관계, 그리고 커뮤니케이션 방법에 관하여 연구해 보고자 한다. In 1999, the origin concept of blog was introduced in America for snaring information, from the end of 2002, It appealed to people in Korea and also has been developed from the original bolg style to the advanced style combining social network service, the reason of unique evolution in Korean blog style is on what the cultural communication method has influenced. Nowadays world is smaller and distance between countries is more and more close than before, by that reason designer peruses global design, but we realize that the globalization should consider local society through blog, therefore this study presents the method of communication and cultural attribute and human relationship that made by old tradition by the means of criticism focused on local culture.
슁글드 모듈에서 경화조건에 따른 ECA 접합강도와 효율의 상관관계에 관한 연구
전다영(Dayeong Jun),손형진(Hyoungin Son),문지연(Jiyeon Moon),조성현(Seonghyeon Cho),김성현(Sung hyun Kim) 한국태양광발전학회 2021 Current Photovoltaic Research Vol.9 No.2
Shingled module shows high ratio active area per total area due to more efficient packing without inactive space between cells. The module is fabricated by connecting the pre-cut cells into the string using electrically conductive adhesives (ECA). ECAs are used for electric and structural connections to fabricate the shingled modules. In this work, we investigated a correlation between ECA peel strength and the efficiency of pre-cut 5 cells module which are fabricated according to ECA interconnection conditions. The curing conditions are varied to determine whether ECA interconnection properties can affect module properties. As a result of the peel test, the highest peel strength was 1.27 N/mm in the condition of 170°C, the lowest peel strength was 0.89 N/mm in the condition of 130°C. The efficiency was almost constant regardless of the curing conditions at an average of 20%. However, the standard deviation of the fill factor increased as the adhesive strength decreased.