[논문]High-Temperature Drying of Bamboo Tubes Pretreated with Polyethylen Glycol Solution

Kang, Chun-Won; Chung, Woo-Yang; Han, Jae-Ok; Kang, Ho-Yang

doi:10.5658/wood.2017.45.2.139

High-Temperature Drying of Bamboo Tubes Pretreated with Polyethylen Glycol Solution 원문보기

목재공학 = Journal of the Korean wood science and technology, v.45 no.2, 2017년, pp.139 - 146

Kang, Chun-Won (Department of Housing Environmental Design, Chonbuk National University) , Chung, Woo-Yang (Faculty of Forest Resources, Chonnam National University) , Han, Jae-Ok (Department of Bio-based Materials, Chungnam National University) , Kang, Ho-Yang (Department of Bio-based Materials, Chungnam National University)

Abstract ▼ AI-Helper

This study was conducted to develop a new drying technology in order to quickly and massively dry bamboo tubes without crack and check. The bamboo tubes with the diameter of 45 mm - 68 mm had been impregnated in the solution of PEG-1000, and then were dried under room temperature and high temperature, respectively. The cracks occurred on all control specimens while no cracks were found on PEG treated specimens during drying at room temperature due to effect of PEG restraining the circumferential shrinkage of bamboo tube. But the drying period of this method was too long (200 days) compared to 10 hours of kiln drying. During fast high temperature drying, cracks occurred on all control specimens, but no cracks were found on PEG treated specimens, which could be accounted for more solidified PEG due to higher drying temperature and faster drying rate, and the tension set formed on the surface of bamboo tube in the early stage of drying owning to high drying temperature and low relative humidity. Thus, it is advised that PEG treated bamboo tube should be fast dried at high temperature in order to not only prevent crack or check in short drying period but also increase the dimensional stability of the products made of bamboo tubes.

주제어

AI 본문요약
AI-Helper

* AI 자동 식별 결과로 적합하지 않은 문장이 있을 수 있으니, 이용에 유의하시기 바랍니다.

문제 정의

This study was conducted to develop a new drying technology in order to quickly and massively dry bamboo tubes without crack and check. The bamboo tubes with the diameter of 45 mm - 68 mm had been impregnated in the solution of PEG-1000, and then were dried under room temperature and high temperature, respectively.

가설 설정

1)The cracks occurred on all control specimens while no cracks were found on PEG treated specimens during drying at room temperature. But the drying period of this method was too long (200 days) compared to 45 hours of kiln drying.
3)The EMC of the treated specimens under high relative humidity showed higher value than that of control specimens.

제안 방법

Although researches on PEG treated wood have been extensively conducted, researches on PEG treated bamboos have been few. Therefore, this study was conducted to develop a new drying technology in order to quickly and massively dry bamboo tubes without crack and check applying PEG drying method.

대상 데이터

The green bamboo tubes with the diameter of 45 mm - 68 mm were cut into the specimens with the length of 400 mm and the total quantity of 30 pieces. The average green moisture content (MC) of bamboo tubes was 61.

성능/효과

2)During fast high temperature drying, cracks occurred on all control specimens, but no cracks did on PEG treated specimens, which could be accounted for more solidified PEG due to higher drying temperature and faster drying rate, and the tension set formed on the surface of bamboo tube in the early stage of drying owning to high drying temperature and low relative humidity. It is advised that PEG treated bamboo tube should be fast dried at high temperature in order to not only prevent crack or check in short drying period also increase the dimensional stability of the products made of bamboo tubes.
The dry bulb temperature and wet bulb temperature in the drying schedule of kiln drying are presented in Fig. 3. Humidification was not conducted from the beginning to the initial drying time of 20 hours, after that the EMC of 5 percent maintained until the end of drying in kiln after humidification of 5 hours. The drying curves of treated and control specimens during kiln drying are displayed in Fig.
The drying curves of treated and control specimens during kiln drying are displayed in Fig. 4. The drying period of both treated and control specimens was 10 hours from the initial average MC of 61.0 percent for treated specimens and 51.2 percent for control specimens to nearly oven-dry condition.

참고문헌 (15)

Alma, M.H., Hafizoglu, H., Maldas, D. 1996. Dimensional stability of several wood species treated with vinyl monimers and polyethylene glycol-1000. International Journal of Polymer Material 32: 93-99.
Bjurhager, I., Ljungdahl, J., Wallstro, L. 2010. Towards improved understanding of PEG-impregnated waterlogged archaeological wood: A model study on recent oak. Holzforschung 64(2): 243-250.

상세보기
Hoadley, R.B. 2000. Understanding Wood. The Taunton Press, Inc., CT, USA pp. 288.
Hong, S.-H., Kim, C.-H., Lim, H.-M., Kang, H.-Y. 2013. Measuring PEG Retentions and EMCs of PEG Impregnated Softwood Specimens after Heat-treatment. Journal of the Korean Wood Science and Technology 41(3): 173-180.

원문보기 상세보기
Jeremic, D., Cooper, P. 2009. PEG quantification and examination of molecular weight distribution in wood cell walls. Wood Science and Technology 43(3-4): 317-329.

상세보기
Lee, W.-H., Hong, S.-H., Kang, H.-Y. 2015. Effects of Drying Temperature and Acetylation on The Retention of Polyethylene Glycol in Red Pine Wood Disks. Journal of The Korean Wood Science and Technology 43(6): 784-791.

원문보기 상세보기
Loughborough, W.K. 1948. Chemical seasoning: Its effectiveness and present status. U.S. Forest services Forest Products Laboratory Report, D1721.
Mackay, J.F.G. 1972. The cnnurrence, development and control of checking in Tasmanian Eucalyptus obliqua, Holzforshung 26(4): 121-124.

상세보기
Mueller, U., Steiner, M. 2010. Colour stabilisation of wood composites using polyethylene glycol and melamine resin. European Journal of Wood and Wood Products 68(4): 435-443.

상세보기
Ralph, J. 2006. PEG penetration and the effects of PEG pretreatment in air-dried Eucalyptus regnans. Wood and Fiber Science 38(1): 139-143.

상세보기
Ralph, J., Edwards, S.J. 2004. PEG penetration in three commercially important Tsmanian Eucalypts. Wood and Fiber Science 36(4): 611-619.
Stamm, A.J. 1959. Effect of polyethylene glycol on the dimensional stabilization of wood. Forest Products Journal 9(10): 375-381.
Wallstrom, L., Lindberg, K.A.H. 1995. Wood surface stabilization with polyethyleneglycol, PEG. Wood Science and Technology 29: 109-120.

상세보기
Yamaguchi, T., Ishimaru, Y., Urakami, H. 1999. Effect of temperature on dimensional stability of wood with polyethylene glycol II: Temperature dependence of PEG adsorption and mechanical properties of treated wood. Mokuzai Gakkaishi 45(6): 441-447.

상세보기
Yamashita, K., Hirakawa, Y., Saito, S., Ikeda, M., Ohta, M. 2012. Internal-check variation in boxed-heart square timber of sugi cultivars dried by high-temperature kiln drying, Journal of Wood Science 58: 375-382.

상세보기

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 논문명, 저널/프로시딩명, 저자 , 발행년, 권, 호, 시작페이지, 끝페이지, 발행기관 관리번호, 논문명, 대등논문명, 저자 , 저널/프로시딩명, 발행기관, 발행년, 발행언어, 권, 호, 시작페이지, 끝페이지, ISBN, ISSN, 주제분야, 키워드, 초록(한글), 초록(영문), 저자(소속기관)
저장형식	Text(ASCII format) Excel format RefWorks Direct Export RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

High-Temperature Drying of Bamboo Tubes Pretreated with Polyethylen Glycol Solution 원문보기

Abstract ▼ AI-Helper

주제어

AI 본문요약
AI-Helper

문제 정의

가설 설정

제안 방법

대상 데이터

성능/효과

참고문헌 (15)

이 논문을 인용한 문헌

저자의 다른 논문 :

관련 콘텐츠

원문 보기

원문 URL 링크

오픈액세스(OA) 유형

이 논문과 함께 이용한 콘텐츠

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트

연합인증

High-Temperature Drying of Bamboo Tubes Pretreated with Polyethylen Glycol Solution 원문보기

Abstract ▼ AI-Helper

주제어

AI 본문요약 엑셀 다운로드 AI-Helper

문제 정의

가설 설정

제안 방법

대상 데이터

성능/효과

참고문헌 (15)

이 논문을 인용한 문헌

저자의 다른 논문 :

강춘원 (28) 정우양 (30) 강호양 (85)

관련 콘텐츠

원문 보기

원문 URL 링크

오픈액세스(OA) 유형

이 논문과 함께 이용한 콘텐츠

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트

AI 본문요약
AI-Helper