쪽잎 추출 산가수분해 인디고의 특성

고인희(In-Hee Go),최태호(Tae-Ho Choi) 한국펄프·종이공학회 2016 펄프.종이기술 Vol.48 No.3

Indigo (Polygonum tinctorium L.) is a typical blue dye which had been used from ancient times. This study was going to shade the complicated traditional methods extracting indigo dye by the fermentation and producing as adsorbate on calcium hydroxide, which says so called as the ‘Indigo lime’. Accordingly we were going to make indigo through the hydrolysis of the hot water extractives of indigo leaves simply. During hot-water extraction, β-glucosidase which required hydrolysis of the linkage between indigo and glucose was not activated. To achieve this goal, indican was acid-hydrolyzed to glucose and indigo. The acetic acid, citric acid, hydrochloric acid, and sulfuric acid were used for the hydrolysis of hot water extractives. The hydrolysis conditions of extractives performed in water bath at 80℃ for 120 minutes and in an autoclave for 120 minutes. In the acid hydrolysis of extracted indican by hot water, the indican yields of acetic acid and hydrochloric acid hydrolysis were higher than sulfuric acid in water bath. Also, the indican yield of hydrochloric acid hydrolysis was better than sulfuric acid in autoclave. The hot water extracted indican was confirmed by HPLC analysis and its structure was confirmed by UV-Vis and FT-IR spectroscopy, compared with isolated indigo and commercial synthesized indigo. This improved extraction and hydrolysis methods can be replace the traditional indigo making method.

단청장(丹靑匠)이 인식하는 전통 단청 색상에 관한 조사 연구

정혜영,박주현,고인희,강영석,Jeong, Hye Young,Park, Ju Hyun,Go, In Hee,Kang, Yeong Seok 국립문화재연구소 2016 保存科學硏究 Vol.37 No.-

This study surveyed color awareness and color systems according to pedigree(Ilseob, Woljoo, Hyegak, Manbong ect.) targeting Dancheongjang (craftsman) who has inherited Dancheong (traditional multicolor). From the survey of color awareness, standardized color system of 'traditional color' awareness by Dancheongjang is 'the color inherited by the master' and it was identified that there is the standardized color system in awareness and its standard is either same or similar to traditional Dancheong. Also, according to each period, colors of Dancheong have been changed, it was thought that change in color materials and preference had went with times. From eleven main colors of Dancheong, chromaticity materials which were preferred by Dancheongjang were analyzed by the faction of Dancheongjang and colors and it resulted in a variety of color ranges over all. In the case of Yangnok, Noerok, Juhong it showed a high deviation with a wide color range while there was a low deviation with a narrow color range in Hayeop, Daja, Seokganju. Through this study it was difficult to identify clear correlations and tendencies of color system by the faction of Dancheongjangs. This is judged to be a reflection of the subjective artistry of the members. 전통 단청을 계승하고 있는 단청장을 대상으로 계보에 따른(일섭, 월주, 혜각, 만봉 등) 단청 색상에 대한 인식과 색상 기준을 조사하였다. 조사 결과, 단청장이 인식하는 '전통색'의 기준은 주로 '스승이 전수한 단청색'이었다. 더불어 단청장 모두 표준화된 색상기준을 가지고 있으며 그 기준은 전통색과 동일하거나 유사한 것으로 인식하고 있었다. 또한 시대에 따른 단청색상의 변천 원인을 재료의 변화와 시대의 선호도가 반영된 결과로 인식하고 있었다. 단청의 주요 색상 11종에 대하여 단청장이 선정한 색도 자료를 단청장 계파별, 색상별로 분석한 결과 전체적으로 매우 다양한 색상 범위가 나타나는 것을 확인 할 수 있었는데 상대적으로 색상 영역이 넓고 편차가 큰 색상은 양록, 뇌록, 주홍이었으며 색상 영역이 좁고 편차가 작은 색상은 하엽, 다자, 석간주였다. 본 연구를 통하여 단청장 계파별 색상 기준에 대한 뚜렷한 경향성을 찾기는 어려웠는데 이는 계파의 구성원이 가진 주관적인 예술성 등이 반영된 결과로 판단된다.

천연염료를 이용한 건축내장용 색 펄프 제조 : 색 펄프로 제조한 벽지의 적합성

고인희(In-hee Go),남현주(Hyun-ju Nam),최태호(Tea-Ho Choi),신유수(Yoo-su Shin) 한국펄프·종이공학회 2011 한국펄프·종이공학회 학술발표논문집 Vol.2011 No.10

Recently increasing eco-efficiency of natural dyeing has become an important topic. The purpose of this study was to manufacture colored pulp for interior materials by combining color therapy and natural dyeing. For this purpose, through experiments with water-bleed, K/S value and chroma changes of samples in pulp for interior materials.

문화재 보존 및 복원에 사용되는 천연 광물성안료의 물성평가 - 석청(石靑)중심으로

박주현,정혜영,고인희,정서린,조아현,Park, Ju-Hyun,Jeong, Hye-Yeong,Go, In-Hee,Jeong, Sir-Lin,Jo, A-Hyeon 국립문화재연구소 2015 保存科學硏究 Vol.36 No.-

문화재 수리, 복원재료 및 회화용으로 사용되는 천연광물성 무기안료인 석청의 물리적 특성을 연구하였다. 본 연구를 위해 시중에서 유통되고 있는 청색계열의 안료(KA-한국, JA, JB, JC-일본, CA, CB, CC-중국)를 선정하였다. 연구에 앞서 XRD, XRF분석을 통하여 안료의 결정구조 및 조성을 확인하였으며, 본 연구에 사용된 안료는 Azurite가 주원료임이 확인되었다. 조성물을 확인한 안료는 입도, 색도, 비중, 흡유량 등 물리적 특성을 평가하였으며, 입도에 따른 물리적 특성의 변화를 확인하였다. 안료는 입도가 작아짐에 따라 명도는 커지고, 청색도는 커지다가 다시 작아지는 특성이 있으며, KA가 안료번호에 따라 가장 잘 분급되어 있음을 알 수 있었다. 비중은 입자크기가 커질수록 커지고, 흡유량은 입자크기가 작아질수록 커졌다. 이러한 결과를 토대로 안료의 기초적인 물리적 특성을 규명하고 나아가 문화재 수리, 복원에 선택적으로 사용하는데 도움이 될 것으로 기대한다. The purpose of this study is to analyse the properties of natural mineral pigments used in restoration and conservation of cultural assets. For this study blue-based pigments that are sold in market were selected. The component analysis using by XRF and XRD shows that blue pigment consist of Azurite. And each specimens were evaluated particle size, chromaticity, specific gravity and oil-absorption according to rating system of pigments particle size. Results show that the value of L* increase with the decrease in particle size. The results suggest that the physical properties which is specific gravity, oil-absorption and chromaticity depend on the particle sizes of pigments. When it comes to particle size of pigments decreased by increasing the number of rating system. In addition, the chromaticity related to particle size. The result from this study expects to be used as useful referencing data for conservation and restoration of cultural heritage and understanding phenomena of the properties according to various particle size of Seokcheong pigment.

열화율이 상이한 밀랍지의 초임계유체추출 탈랍처리효과 비교분석

정혜영(Hye Young Jeong),강영석(Young Suk Kang),고인희(In Hee Go),양은정(Eun Jeong Yang),최경화(Kyoung Hwa Choi) 한국펄프·종이공학회 2014 펄프.종이기술 Vol.46 No.6

This study aims to investigate the applicability of supercritical fluid extraction as a dewaxing technique to restore the beeswax-treated volume of the Annals of the Joseon Dynasty in various deterioration and damage conditions. Thus, this study analyzed the dewaxing efficiency and changes in physical and morphological properties before and after dewaxing, by applying the optimal supercritical fluid extraction dewaxing condition (70℃, 40 MPa, CO₂, Co-solvent 20% DCM, 2 hour) to 3 kinds of beeswax-treated paper with different deterioration rates (dry artificial aging of 10, 20 and 30 days at 120℃). After dry artificial aging at 120℃ for 30 days, the average molecular weight of the beeswax-treated specimen was 1.856×105 g/mol, showing deterioration about 80% of the beeswax-treated paper before dewaxing. It was a similar level to the molecular weight of the bees-waxed volume of the Annals of the Joseon Dynasty that has a higher degree of damage. As a result of analyzing the dewaxing efficiency through FT-IR analysis, this study discovered that it was possible to effectively dewax beeswax-treated paper in the range of deterioration 20 to 80% with this supercritical fluid extraction dewaxing technique applied. As a result of analyzing changes in the physical and morphological properties before and after dewaxing, the viscosity tended to decrease to a slight degree, and since no morphological deformation or damage of stencil fibers was found, it was concluded possible to conduct stable dewaxing through this supercritical fluid extraction technique.

열화 밀랍지의 탈랍 및 강도보강 처리 안정성 평가

정혜영(Hye Young Jeong),고인희(In Hee Go),남현주(Hyun Ju Nam),최경화(Kyoung Hwa Choi) 한국펄프·종이공학회 2013 펄프.종이기술 Vol.45 No.6

천연색소를 이용한 건축 내장용 벽지 제조 : 천연색소를 이용한 Super eight color 벽지 제조

남현주(Hyun-Ju Nam),고인희(In-Hee Go),최태호(Tea-Ho Choi),신유수(Yoo-su Shin) 한국펄프·종이공학회 2011 한국펄프·종이공학회 학술발표논문집 Vol.2011 No.10

Recently increasing eco-efficiency of natural dyeing has become an important topic. The purpose of this study was to manufacture colored Wall paper for interior materials by combining color therapy and natural dyeing. For this purpose, through experiments with water-bleed, K/S value and chroma changes of samples in Wall paper for interior materials.

정량 X-선 회절분석을 이용한 국내시판 단청안료의 광물조성 연구

문동혁,한민수,정혜영,고인희,조현구,Moon, Dong Hyeok,Han, Min Su,Jeong, Hye Young,Go, In Hee,Cho, Hyen Goo 한국문화재보존과학회 2016 보존과학회지 Vol.32 No.3

본 연구는 현재 단청시공에 실제 사용되고 있는 국산 천연안료 제품 총 22종을 대상으로 리트벨트법을 활용한 정량 X-선 회절분석을 실시하여 구성성분의 조성과 함량 특성을 밝히고자 하였다. 분석결과, 주보사와 황, 석록, 석청, 호분 등의 제품들은 각각 거의 순수한 진사, 웅황, 공작석, 남동석 및 방해석 또는 아라고나이트로 구성된 것으로 판단된다. 반면, 석간주와 황토, 뇌록, 라피스라즐리, 백토, 꼬막호분 등의 제품들은 각각 적철석, 침철석, 뇌록석, 라주라이트, 고령석 및 포틀랜드석 등이 주구성광물이며, 그 외 석영, 장석, 견운모, 질석 등 일반적인 토양에 풍부한 광물과 방해석, 석고 및 경석고 등과 같이 산업계에서 충진제로 활용되는 광물들이 각 제품에 다양한 비율로 함유되어 있는 것으로 나타났다. 이와 같이 정량 X-선 회절분석을 통하여 화학조성분석이나 현미경관찰만으로는 획득하기 쉽지 않은 보다 구체적인 안료 제품들의 광물조성 및 그 함량 비에 대한 정보를 획득할 수 있었으며, 추후 이를 천연안료제품의 품질기준 설정에 활용하거나 대체원료수급 및 품질향상을 통한 보존과학연구 등에 다양한 방법으로 적용이 가능할 것으로 사료된다. Mineral composition and content of 22 Korean Dancheong pigment products were obtained by Rietveld quantitative analysis. Jubosa, Hwang, Seokrok, Seokcheong and Hobun consist of pure cinnabar, orpiment, malachite, azurite and calcite (or aragonite), respectively. Whereas Seokganju, Hwangto, Noerok, Lapis lazuli, Baekto and Cockie hobun mainly consist of hematite, goethite, celadonite, lazurite, kaolin mineral and portlandite, respectively. And they all consist of soil minerals (quartz, feldspar, sericite and vermiculite) and filler minerals in the industry field (calcite, gypsum and anhydrite) at a different content. Quantitative XRD proved more useful method to determined exact mineral composition and content than chemical or microscopical data. If this method utilize for specification of natural pigment product, it is considered to be applicable in restoration technology and conservation science field.

천연색소를 이용한 건축내장용 색한지 제조 (제1보) : Super eight color 창호지의 제조

장혜미(Hye-Mi Jang),남현주(Hyun-Ju Nam),고인희(In-Hee Go),최태호(Tea-Ho Choi) 한국펄프·종이공학회 2011 펄프.종이기술 Vol.43 No.1

닥나무 인피섬유와 한지의 원산지 판별모델 개발을 위한 NIR 및 MIR 스펙트럼 데이터의 PLS-DA 적용

장경주(Kyung-Ju Jang),정소윤(So-Yoon Jung),고인희(In-Hee Go),정선화(Seon-Hwa Jeong) 한국분석과학회 2019 분석과학 Vol.32 No.1