• Journal of the Korean Wood Science and Technology
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• 제21권1호
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• pp.21-38
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• 1993

In order to investigate the influence of recycling, a laboratory method simulating the papermaking process was used for assessing the effects of recycling on fiber properties. Sw-BKP, Hw-BKP and BGP were disintegrated and beaten to about 42$^{\circ}$SR-44$^{\circ}$SR by a valley beater. After beating, these pulps were dewatered by centrifuge and dried at 90$^{\circ}C$ for 72hrs. This recycling process(sequence of wetting, defiberating, dewatering and drying) was repeated seven times. Physical, mechanical and optical properties of recycled pulps were evaluated by TAPPI Standards. Morphological changes occurred through recycling process was observed by SEM. Sheet density decreased with recycling. The largest drop in density occurred during the first recycling. The porosity values decreased with recycling. Mechanical properties such as tensile, burst strength and folding endurance, decreased with recycling. However tear strength of Sw-BKP and mixtured pulp increased at the first recycling. Optical properties such as brightness, opacity and light scattering coefficient, increased with recycling. However, brightness of mixtured pulp gradually decreased with recycling. Fibrillated outer layer of the fiber was gradually removed from the surface with recycling. As a result of recycling, crinkles on the fiber surface were found to be more folded.

• 한국자원식물학회지
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• 제32권5호
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• pp.486-498
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• 2019

국내외 개발된 Hsota 품종의 잎의 생육과 개화 특성을 조사한 결과, 식물의 크기는 H.'Abiqua Blue Crinkles', H.'Abiqua Drinking Gourd', H.'Dancing in the Rain', H.'Elegance', H. 'Inniswood', H.'Venus'등 6종류가 가장 컸으며(대형 계통, 50 cm 이상), H. 'Abby', H. 'Birchwood Parky's Gold', H. 'Blue Cadet', and H. 'Blue Edge등을 포함한 27종은 소형 계통이다(6 cm 이상 20 cm 미만). 79%가 무늬를 가지며 무늬 형태는 marginata (복륜), mediovarigata (중투), albomaculata (산반), striata (서반)이며, marginata 계통은 H. 'Abby', H. 'Abiqua Moonbeam', H. 'Atlantis'등을 포함하여 31종류로 전체 비율 중 36%로 가장 많았다. 개화기는 H. 'Abby', H. 'Abiqua Drinking Gourd', H. 'Abiqua Moonbeam'등 36종류가 5월 말부터 개화였고, H. 'Black Hills', H. 'Boeun', H. 'Fragrant Bouquet'등 9종은 8월 이후에 개화하였다. 꽃은 H. 'Avocado'가 5.0 ㎝ 이상으로 대륜 계통이었으며, H. 'Avocado', H. 'Fragrant Bouquet', H.'Fried Bananas' 등 H. plantaginea 계통이 대부분 크기가 컸다. 꽃의 색은 꽃의 색은 6가지로 분류되며, white 계열은 25.9%, lavender 계열은 45.9%, purple 계열은 28.2%가 개화하였다. H. 'Blue Mouse Ears', H. 'Captain Kirk', H.'Fragrant Bouquet' 등 12종류는 개화시 향기가 있었다. H.'Cherry Berry'와 H. 'Revolution'은 각각 빨간색과 노란색의 꽃대를 가지고 있다.