• 한국가구학회지
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• 제11권2호
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• pp.45-53
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• 2000

This study was carried out to determine the suitability of 3 months old bamboo species of Phyllostachys bambusoides S. et Z., Phyllostachys Pubescens Mazel and Phyllostachys nigra var henonis Stapf as raw materials for the manufacture of strandboard. Total of 108 strandboards were made using urea-formaldehyde resin content level of 12% and one percent of liquid wax emulsion. The strandboard consisted of three layers the top and the bottom layer of which were oriented to the same direction and weighted 25% of the strandboard each. The middle core layer weighed 50% of the board and was perpendicular to the outer top and bottom layers. Analysis was performed to determine the effect of strand lengths and Uowing years of 3 months, 2 years and 3 years on strandboard properties. The physical and mechanical properties of bamboo species and boards were measured and compared to the standard requirements of strandboards. The results are as follows; 1. The more the growing years the higher the density of bamboo. Top part of bamboo indicated higher density value than that of bottom part. 2. Bamboo showed higher static bending strength compared to the main wood species. Longer growing years of bamboo generally inclosed the static tending strength out there were no statistical significancies for Phyllostachys bmbusoides S. et Z. and Phyllostachys pubescens Mazel. 3. Strand length indicated no difference on density and moisture content of strandboard. 5 cm of strand length gave the best static bending strength and internal bonding strength. Bamboo strandboard exhibited lesser extents of thickness swelling than that of CSA standard. 4. 3 months old bamboo gave higher static bending strength of strandboard than those of 2 years and 3 years old bamboo. In case of Phyllostachys nigra var henonis Stapf, 3 months old bamboo indicated higher internal bonding strength than those of 2 years and 3years old bamboo. but in Phyllostachys bambusoides S. et Z., Phyllostachys pubescens Mazel, there were no difference among growing years. Growing years showed no different physical properties of bamboo strandboard.

• 한국산림과학회지
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• 제111권1호
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• pp.108-114
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• 2022

In bamboo, the nutrient status of tissues and associated soil is an important indicator of nutrient uptake by various bamboo species. In this study, the nutrient concentrations of leaves, roots, and mineral soil at 0-10 cm depths were examined in three bamboo stands [Phyllostachys bambusoides S ieb. et Zucc, Phyllostachys nigra var. henonis Stapf ex. Rendle, and Phyllostachys pubescens (Mazel) Ohwi] at a broad regional scale in southern Korea. In the three bamboo species, species-specific differences were observed in the carbon (C) and calcium (Ca) concentrations of leaves and in the nitrogen (N) and magnesium (Mg) concentrations of roots. Ca concentrations in leaves were significantly higher in P. bambusoides (11.94 g Ca kg^-1) than in P. pubescens (7.83 g Ca kg^-1), whereas potassium (K) concentrations were lowest in P. bambusoides among the three bamboo species. N concentrations in the roots were significantly lower in P. pubescens (5.23 g N kg^-1) than in P. nigra var. henonis (7.72 g N kg^-1). In contrast to bamboo tissues, soil nutrients, such as total N, organic C, exchangeable Ca²⁺, and Mg²⁺, did not differ significantly among the bamboo species. These results suggest that species-specific practices will be required for nutrient management of bamboo stands because nutrient concentrations vary considerably in the tissues of the three studied species.

• Journal of the Korean Wood Science and Technology
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• 제46권1호
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• pp.29-37
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• 2018

본 연구에서는 주요 바이오매스 자원의 하나인 대나무의 효율적 활용을 위한 기초자료를 수집하기 위하여, 국내산 대나무 3종(맹종죽, 솜대 및 왕대)의 해부학적 특성을 광학현미경 및 주사전자현미경으로 비교 분석하였다. 또한 X선 회절법에 의해 셀룰로오스의 결정특성을 분석하였다. 횡단면 관찰 결과, 3종 모두 유관속 I형으로 종간 동일한 형태를 보였다. 또한 횡단면의 내측부에서 외측부로 갈수록 유관속의 출현빈도가 더 높았고, 유관속을 둘러싸고 있는 유관속초의 비율도 커졌다. 구성세포 치수 측정 결과, 섬유길이는 모든 종에서 외측부의 값이 내측부의 값보다 컸으며, 내측부와 외측부 모두 왕대의 섬유길이가 가장 길었다. 섬유길이의 유의성 검정 결과 3종 모두 내측부와 외측부간에 유의성이 나타났다. 횡단면에서 측정한 도관 직경 및 유세포 직경은 맹종죽의 값이 가장 컸으며, 방사 및 접선단면에서 측정한 유세포 길이 및 폭은 맹종죽과 왕대가 유사한 값을 나타냈고, 솜대가 가장 작았다. 셀룰로오스의 결정특성 분석 결과 상대결정화도 및 결정 폭은 외측부가 내측부에 비해 다소 높았으며, 왕대의 상대결정화도 및 결정 폭이 다른 2종에 비해 다소 높았다.

• 펄프종이기술
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• 제48권3호
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• pp.44-50
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• 2016

As a raw material for pulp and paper industry, Moso bamboo, Timber bamboo and Henon bamboo pulps were prepared by soda or soda-anthraquinone(Soda-AQ) pulping process. Soda-AQ pulp yields was higher in Henon bamboo (43.2%) than in Moso bamboo or Timber bamboo (32.7-39.2%), but quite lower than hardwood species. In Kappa number comparison, Henon bamboo pulp showed lower (16.6) with 50 min cooking to $170^{\circ}C$ than that of Moso bamboo (22.8) and Timber bamboo (18.9) with 90 min cooking to $170^{\circ}C$. Fiber length of Timber bamboo soda pulp had higher (1.46 mm) than that of Moso bamboo or Henon bamboo (1.18-1.36 mm). All three bamboo pulps showed longer average fiber length than commercial hardwood pulp. With higher pulp yield and lower Kappa number, Henon bamboo is better raw material for pulp than Moso bamboo and Timber bamboo.

• 펄프종이기술
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• 제48권3호
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• pp.73-79
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• 2016

Hexeneuronic acid in soda-anthraquinone(AQ) pulps from Moso bamboo(Phyllostachys pubescebs), Timber bamboo(Phyllostachys bambusoides) and Henon bamboo(Phyllostachys nigra var. henonis) was investigated with mercuric chloride hydrolysis and UV spectroscopic quantification. Concentration of hexeneuronic acid in bamboo pulps was $36.6-45.4{\mu}mol/g$, which contributed to 3.1-3.9 value increase of kappa number. Lower concentration of 4-O-methylglucuronic acid in bamboo xylan contributed to lower hexeneruonic acid content in bamboo pulps than those of hardwood(yellow poplar or eucalyptus) but higher than softwood(red pine).

• 임산에너지
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• 제22권2호
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• pp.18-25
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• 2003

중국산 죽순대 (Phyllostachys pubescens)를 간이탄화로(400 - 500 ℃)에서 제탄하고 얻어진 죽초액에 대하여 그 특성을 검토하였다. 중국산 죽순대로부터 제조한 죽초액은 보매 비중 4.5, 유기산 함량 9.9%, pH 2.8, 용해타르함량 3.1%, 굴절률 13.1%를 나타내었다. 이들 죽초액의 구조 동정 및 정량 결과, acetic acid, 1-hydroxyl-2-propanone, methanol, 1-hydroxyl-2-butanone, propionic acid 등이 주요화합물로 국내산 죽순대 죽초액과 큰 차이가 없었다. 총 유기물 함량은 14.8% 이었으며 이중 유기산류 (acetic acid, formic acid, propionic acid, butanoic acid)는 9.0%로 전체 유기물 중 약 61%를 차지하였다. 페놀류와 중성류는 각각 0.8%와 4.5%로 전체 유기물의 약 6%와 31%를 차지하였다. 시판되고 있는 중국 재래식 죽초액의 경우 대부분의 물성치 및 유기물 함량이 낮은 것으로 보아 본 죽초액은 탄화 초기단계에서 포집하여 숙성시켰을 가능성이 높다고 생각되었다.

• Journal of the Korean Wood Science and Technology
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• 제27권1호
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• pp.56-63
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• 1999

국산 죽재를 목재산업용 원재료로 활용할 수 있는 가능성을 타진하기 위하여 대표적인 우리나라 대나무 수종인 전남 담양산 맹종죽, 분죽 및 왕대의 절삭과 건조특성 등 기계가공성을 조사, 분석하였다. 연구 결과 쪼개기저항은 공구가 2.5cm 피삭재 내부로 진입하였을 때 최대로 상승하였으며, 칼날각 15도의 쐐기형 공구를 이용하면 쪼개기저항을 최소화할 수 있는 것으로 밝혀졌다. 또한 둥근톱과 띠톱에 의한 죽재의 절삭면 품질은 목재의 경우에 비하여 비교적 양호하였다. 한편 두께 12mm 맹종죽을 함수율 60%에서 10%까지 온도 $70^{\circ}C$로 건조하는데 약 62.5 시간이 소요되었다.

• Journal of the Korean Wood Science and Technology
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• 제32권3호
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• pp.42-51
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• 2004

Wood veneer-bamboo zephyr composite board (WBCB) was manufactured to evaluate the properties of bamboo as alternative raw materials for the manufacture of composite panels. Bamboo zephyr was prepared using Moso bamboo (Phyllostachys pubesens Mazel. et Z), Giant timber bamboo (Phyllostachys bambusoides Sieb. et Zucc), and Hachiku bamboo (Phyllostachys nigra var. henosos Stapf). The effect of age and species of bamboo on zephyr production was investigated in terms of the pass number of bamboo split through the rollers, and the width increasing rate of bamboo split. Five-ply WBCBs were produced with Keruing veneers as face and back layers, leading to three layers of bamboo zephyr sheets as core layer. Each layer was placed so that its grain direction was at right angles to that of the adjacent layer and the layers were bonded together with phenol-formaldehyde (PF) resin.The pass number of bamboo split was increased with an increase of the thickness of culm wall. At the same thickness, Moso bamboo showed no effect of the age of bamboo on the pass number. The pass number of split of Giant timber bamboo was lower than that of Moso bamboo. No significant effect of bamboo species and age on the width of zephyr produced was observed. The width of zephyr obtained could be expressed as a function of diameter multiplied by thickness of culm wall. The physical and mechanical properties of WBCB manufactured in all given conditions did not show any significant differences, and they were above the requirement of Korean Standard (KS).

• 펄프종이기술
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• 제43권3호
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• pp.43-51
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• 2011

Chemical composition and contents of carbohydrates, lignin, and extractives in Moso(Phyllostachys pubescens Mazel), Henon(Phyllostachys nigra var. henonis Stapf ex. Rendle), and Timber bamboo(Phyllostachys bambusoides Sieb. et Zucc.) known as economically valuable bamboo species in Korea were analyzed as a function of ages. All of tested bamboo species were composed of fucose, arabinose, rhamnose, galactose, glucose, xylose, and mannose. Glucose was the sugar which showed the highest content followed by xylose. The contents of others were below 3%. Sugar contents of bamboo shoots showed the lowest among the tested bamboo samples, and the constant rates were shown after 50 days of growth. Lignin content increased by the growth of one year, and the increasing rates tended to be constant after the growth of three years. Bamboo shoots have the highest contents of acid-soluble lignin, which turned into insoluble lignin after the growth of 50 days. Bamboo shoots showed the highest content of extractives and tend to be decreased by the growth of 50 days and then the content increased slowly in proportion to the period of bamboo growth. No relationship was found between species and chemical composition of bamboo. However, there were significant difference in chemical composition between bamboo shoots and 50-day old bamboo.

• 펄프종이기술
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• 제38권3호
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• pp.29-37
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• 2006

To use bamboo in the pulp industry, the anatomical characteristics of 60-day-old, 1-year-old, 2-year-old, and 3-year-old moso bamboo (Phyllostachys pubescens Mazel), and the characteristics of fiber and sheet of alkali pulp made of moso bamboo were investigated. Moso bamboo is composed of metaxylens and parenchyma cells in the inner part of the wall, and thick-walled small bundle sheathes near the outer walls. Moso bamboo showed the heterogeneity in anatomical structure. The longest fibers were shown in the middle part, and the widest width in the inner part. The lignin contents were 14.4% in 60-day-old bamboo, which was not lignified yet. The lignin contents in bamboo above 1 year were approximately 35%. The yields of alkali pulp of moso bamboo were in the range between 41 and 47%, and the yields tend to decrease with the increase of ages. The lignin contents of 60-day-old bamboo were 2.1% and those of bamboo above 1 year showed approximately 4% to 5% increment. The length, width, and curl index of fiber in alkali pulp appeared to be similar in all ages. However, coarseness increased slightly with the increase of bamboo ages. The distribution of long fiber was shown much in 60-year-old bamboo. The optical and mechanical properties of moso bamboo tended to decrease with the increase of bamboo age.