• 한국의류학회지
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• 제27권7호
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• pp.862-871
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• 2003

Kenaf has been estimated as an economic and environmentally compatible crop. This study purposed to enlarge the use of kenaf as textile materials and to develope high value-added textile fibers. Kenaf has been cultivated successfully and grown fast in Jeju. The height of kenaf stalks was about 220cm at 105 DAP and 400cm at 150 DAP, After harvesting at 105 DAP and seperating the basts from harvested kenaf stalks, decorticated kenaf basts were rotted in water at 15~$25^{\circ}C$ for biological rotting and were treated with 1%, 4% and 7% NaOH at 9$0^{\circ}C$ for chemical retting. The properties of extracted fibers were compared: such as fiber diameter. Transversal and longitudinal views, colors, crystallinities, strengths and elongations etc. The diameter of kenaf bast fibers was 15~25 ${\mu}{\textrm}{m}$. Biologically rotted kenaf bast fibers had well developed lumens which were diminished after chemical retting. The degree of crystallinities of biologically rotted kenaf bast fiber was about 92~96% showed higher than those of chemically rotting. The biologically rotted fibers were bright and had creamy color. Yelloweness increased at chemically rotted fibers. Fiber bundle strengths were from maximum 98076.9 (gf/g) to minimum 63749.5 (gf/g). Fiber bundle strengths of biologically rotted kenaf fibers appeared greater than those of chemically rotted fibers. Alkali treatments of chemical rotting could make strength lower and elongation higher. Rotting method might be one of the most importance factors affecting to final fiber properties.

• 환경생물
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• 제22권1호
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• pp.120-126
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• 2004

수경 재배된 케냐프의 중금속 축적량 및 제거량을 파악하고 서로의 관계를 도출하기 위하여 Cd, Cu, Cr, Ni 및 Zn이 포함된 반응조에 노출시켰다. 대상식물의 최적성장을 위한 pH, DO, 전도도 및 영양염의 농도조절은 액체비료를 이용하여 조정하였다. 8일의 수리학적 체류시간을 적용했을 때 Cr, Cd, Cu, Ni 및 Zn의 제거율은 각각 90.5%, 80.5%, 66.1%, 71.1% 및 79.4%였고 그 농도는 각각 2.34에서 0.54 mg $L^{-1}$까지, 3.37에서 1.07 mg $L^{-1}$까지, 4.92에서 3.19 mg $L^{-1}$까지, 6.31에서 4.41 mg $L^{-1}$까지, 6.27에서 2.09 mg $L^{-1}$까지 줄었다. 특히 Cr, Cd, Cu, Ni 및 Zn의 축적율은 각각 원소별로 347.32 and 275.39, 157.52, 50.48 및 211.01 mg DW kg $L^{-1}d^{-1}$로 나타남으로써 본 연구의 결과 케냐프는 Cr, Cd과 Zn을 효율적으로 제거하는 식물임을 확인할 수 있었다. 최대제거율을 나타냈던 시점에서 Cr, Cd, Cu, Ni 및 Zn의 제거량에 대한 축적비율은 43.4%, 39.9%, 21.4%, 5.6% 및 14.5%로 나타났으며, 이와같은 생체내로의 축적과 더불어 rhizosphere에서나 잎을 통한 또 다른 기작에 의해 제거되는 것을 추정할 수 있으며 이는 밝혀야할 숙제로 대두되었다. 원소별로는 다른 원소에 비해 Cr, Cd및 Zn이 효율적으로 축적됨을 알 수 있었다.