• 펄프종이기술
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• 제44권3호
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• pp.22-33
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• 2012

This study was carried out to investigate the characteristics of the lining papers which had been separated from six pieces of paintings and calligraphic works of the 18th and the 20th century. A total 20 kinds of lining papers were examined on the physical properties, colors, fiber morphology, and color reactions. The grammage and thickness of lining papers which had been used hanging-scroll type works were higher than those of folder types. On the other hand, the grammage and thickness of the first layer lining papers which had been separated from silk ground works were lower than those of paper ground works. All kinds of lining papers were colored from yellow to yellowish red because of unbleaching and deterioration. Through the examination on fiber morphology and color reactions, lining papers were verified that all of those were made from paper mulberry bast fiber but the first layer of the Mukjukdo. The lining paper which of the first layer of the Mukjukdo was verified that it was made from mixture of paper mulberry, hemp, and spruce pulps.

• 한국의류학회지
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• 제32권9호
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• pp.1366-1375
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• 2008

This studies were carried out in order to develope environmentally-friendly fiber materials and substitute resources of Paper mulberry. Various plant fibers such as New Zealand flax, Indian mallow, Kuzu vine and Yucca were used as raw materials of hand-made papers. We rotted these 4 kinds of plant fibers and removed non-cellulose. After rotting, the pulping rate(%) and the length of fibers in pulps were measured. The physical characteristics of papers made of various plants fiber were investigated and the probabilities of practical use were considered. The results were as follow: The non-cellulose contents of plant fibers were $30{\sim}40%$ and those contents must be lower down to 8% to be able to manufacture the hand made papers. The lignin in pulps were removed almost and the hemicellulose were partially removed to reach up to appropriate level of the pulp rates and fiber lengths. The more hemicellulose removed, the finer fiber thickness were and rapidly the lower Hanji tensile strength were. But the tear strength of these plants of hand-made papers do not decreased so much as tensile strength. So the property of 4 types of plant fibers might be of great advantages to make hand-made papers. Both tensile and tear strengths of Hanji of New Zealand flax, Indian mallow, Kuzu vine and Yucca were higher than Paper mulberry hand-made paper. When 30% of mulberry paper were mixed, the mixing effect showed maximum. Because of the functions of all plant fiber hand-made papers showed better than those of Paper mulberry hand-made paper, 4 types of plant fibers could be substitute Paper mulberry.

• 보존과학회지
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• 제5권1호
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• pp.94-104
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• 1996

This study was carried on paper mulberry bast fibers, which were cut in the length of it's chip by three kinds. And they cooked by sodium hydroxide (NaOH) and ammonium oxalate (AMOX), and pulping process was studied to inquire some properties of hand made papers. The results were as follows. AMOX pulps had $10\~17\%$ higher than NaOH, but amounts of the residual lignin of it's pulps and residual ash were high, and it surely can't be superior. In the freeness of pulps, AMOX pulps were higher than that of NaOH, but they showed tendency to opposite in view of relation of chip's length kinds. For the AMOX pulps, the physical characteristics test results were higher long fiber pulps than short fiber pulps. Specially, in folding endurance long fiber pulps were a very strong. NaOH pulp's physical characteristics test had shown results that were opposite of there of the AMOX pulps, if the length of the fiber is longer, the strengthts generally decreased. To get the optimum fiber's length according to use of paper and pulping method, they must be fractionate chip's length. The long fibers in NaOH pulps affected the paper quality greatly to length of chips.

• 펄프종이기술
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• 제30권2호
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• pp.74-84
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• 1998

This study was carried out to investigate the papermaking characteristics of paper mulberry(Broussonetia kazinoki) for new Korean traditional paper(Hanji). Hanji has been traditionally made only with the bast fiber of paper mulberry. Besides mulberry bast part, wood core was utilized separately or in mixed forms as raw materials for the new Hanji. Hanjis made from the solfomethylated pulp were shown higher brightness and sheet strengths than those from alkali and alkali-hydrogen peroxide pulps. The brightness of solfomethylated pulp was found to be high enough not to need additional bleaching. In the physical properties of the Hanjis mixed with bast part and wood core pulps, the handsheet strengths were decreased as the increase of the wood core pulp contents. But the sheet strengths of Hanjis containing 10∼30% of wood core pulps were higher than those of the Hanji containing bast part pulp only. The sheet formations were improved as the increase of wood core pulp contents, while the sheet strengths were decreased.

• 자원리싸이클링
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• 제29권2호
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• pp.8-17
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• 2020

본 연구에서는 분쇄 가공된 폐닥나무의 친환경 조습 제품에 대한 적용 가능성을 확인하기 위해 인피섬유와 폐닥나무 분쇄 펠렛의 흡·방습 성능 측정을 진행하였다. 폐닥나무 분말은 710-355㎛, 355-100㎛, 100-45㎛ 및 45㎛ 미만의 입도별로 분류하여 사용하였다. 분말의 비표면적은 입자 크기가 710㎛부터 45㎛미만으로 감소할수록 1.02㎡/g에서 1.35㎡/g로 증가하는 경향을 나타내었다. 흡·방습량은 355-100㎛, 710-355㎛, 100-45㎛, 45㎛미만 및 인피섬유의 순으로 감소하였으며, 각각 141.1g/㎡, 147.1g/㎡, 135.7g/㎡, 129g/㎡의 흡습 및 117.2g/㎡, 123.6g/㎡, 110.2g/㎡, 93.3g/㎡의 방습 성능이 확인되었다. 폐닥나무 분말의 흡습 및 방습 성능은 닥나무 인피섬유 보다 우수하였으며, 이는 펠렛 내부 기공의 분포와 섬유 손상에 기인한 것으로 사료되었다.

• Journal of the Korean Wood Science and Technology
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• 제24권4호
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• pp.15-21
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• 1996

This study was carried out to investigate the making method and properties of Hanji(Korean traditional paper) for wallpaper for the purpose of mass production and mass consumption of Hanji. Paper mulberry fiber was longer than wood fiber in length and it had also much extractives and ash in content. Bast fiber was a little damaged in the fibrilation and beating process because it was weak in flexibility and compressive properties. Proper conditions for making two-ply and three-ply Hanji were examined and six kinds of Hanji were made on the basis of the three-ply paper making method. The sample OH(Original Hanji) 2-2 and OH 3-2 among them obtained good results in quality test by appearance from wallpaper makers.

• 펄프종이기술
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• 제43권1호
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• pp.47-56
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• 2011

This study was carried out to investigate the characteristics of the Hanji which had been used for movable types printing volumes of the Joseon Dynasty. A total 29 volumes which had printed with metal and wooden movable types, were examined on the physical properties, fiber morphology, and color reactions. The grammage of all of the Hanji which had been used for movable types printing volumes were $13.10-51.65g/m^2$ and on the average was $25g/m^2$. The apparent density of the Hanji was $0.23-1.65g/cm^3$ and on the average was $0.4g/cm^3$. In almost all movable types printing volumes, the Hanji had undergone Dochim which is a processing of printability improvement. Through the examination on fiber morphology and color reactions, Hanji was investigated into that all of those were made from paper mulberry bast fiber.

• 펄프종이기술
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• 제47권3호
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• pp.55-62
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• 2015

Paper mulberry fibers have been used as fibrous raw materials for manufacturing traditional handmade paper, hanji for a long time. Compared to wood pulp fibers, pulp fibers from mulberry bast tissue have some benefits in physical and chemical properties due to their high D.P (degree of polymerization), M.W (molecule weight) and long fiber length. Specially, Korean handmade hanji shows outstanding characteristics in mechanical tensile strength, folding endurance, flexibility and long sustainable conservation properties. Therefore, hanji is widely applied to daily supplies, hygienic goods, medical supplies, clothing industries and so on. Recently, the potential demand of mulberry pulp fibers is more and more increased on the strength of high application fields. This study was focused on the possibility of wastewater recycling in unit operation systems for the development of automated mass production line. The properties and environmental loads of wastewater from debarking, cooking, bleaching and screening process were analyzed by means of COD, conductivity, turbidity and solid materials. The wastewater from debarking and cooking process was comparatively high in pollution load, and would be treated by additional approaches of chemico-physical method.

• 한국펄프종이공학회:학술대회논문집
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• 한국펄프종이공학회 2005년도 추계학술발표논문집
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• pp.101-108
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• 2005

• Journal of the Korean Wood Science and Technology
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• 제43권6호
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• pp.730-739
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• 2015

본 연구는 셀룰로오스 나노섬유를 닥나무 인피섬유 시트의 제조시 첨가하여, 닥나무 인피섬유 시트의 특성에 미치는 영향을 조사하였다. 형태학적 및 화학적 성질이 다른 5종류의 셀룰로오스 나노섬유, 즉 리그노셀룰로오스 나노섬유 (lignocellulose nanofiber, LCNF), 홀로셀룰로오스 나노섬유(holocellulose nanofiber, HCNF), 알칼리처리 홀로셀룰로오스 나노섬유(alkali-treated HCNF, AT-HCNF), TEMPO-산화 나노섬유(TEMPO-oxidated nanofiber, TEMPO-NF), 셀룰로오스 나노크리스탈(cellulose nanocrystal, CNC)을 제조하였으며, 각 나노섬유의 종류 및 첨가량이 닥나무 인피섬유시트 제조시의 여수시간 및 시트의 투기도, 평활도, 인장강도 특성에 미치는 영향을 조사하였다. 여수시간은 모든 나노섬유에 있어서 첨가량이 증가함으로서 길어졌으며, 5%의 첨가량에서 HCNF가 가장 여수시간이 길었다. 또한, 셀룰로오스 나노섬유 첨가량이 증가할수록 시트의 평활도, 인장강도 특성이 향상되었으며, 특히 0.1%의 극히 적은양의 나노섬유 첨가로도 비인장강도 및 탄성계수가 크게 향상되는 것을 알 수 있었다. 이러한 특성 향상은 닥나무 인피섬유 간에 교차적으로 적층되어 있는 셀룰로오스 나노섬유의 충전 효과에 기인하는 것을 전자현미경 사진을 통해 확인할 수 있었다.