열수 및 알칼리 용액을 이용하여 국산 목재 칩으로부터 선추출한 헤미셀룰로오스의 특성과 이에 따른 수초지 물성 변화 (Characteristics of pre-extracted hemicelluloses from Korean mixed wood by hot water and alkali solution and its effect on handsheet properties)

서지정보

· 발행기관 : 한국펄프·종이공학회
· 수록지 정보 : 펄프종이기술 / 43권 / 5호 / 60 ~ 67페이지
· 저자명 : 서동일, 이상훈, 심규정, 윤혜정, 이학래

초록

Hemicelluloses pre-extracted from Korean mixed wood chip were investigated as a wet-end additive.
Hemicelluloses dissolved in hot water and alkali solution were isolated by ethyl alcohol precipitation from pre-extractives. They showed molecular weight of 9,000 ~ 27,000 g/mol as revealed by size exclusion chromatography. The reduction of molecular weight through hot water extraction was caused by autohydrolysis. Chemical composition of the hemicelluloses were analyzed with high-performance liquid chromatography and UV-Vis spectroscopy. As the surface charge of isolated hemicelluloses were negative, the adsorption of hemicelluloses onto softwood unbleached kraft pulp fiber was promoted by poly-DADMAC. The physical properties of handsheets increased as the molecular weight of hemicellulose increased. On the other hands, the optical property decreased with hemicellulose adsorption.

영어초록

Hemicelluloses pre-extracted from Korean mixed wood chip were investigated as a wet-end additive.
Hemicelluloses dissolved in hot water and alkali solution were isolated by ethyl alcohol precipitation from pre-extractives. They showed molecular weight of 9,000 ~ 27,000 g/mol as revealed by size exclusion chromatography. The reduction of molecular weight through hot water extraction was caused by autohydrolysis. Chemical composition of the hemicelluloses were analyzed with high-performance liquid chromatography and UV-Vis spectroscopy. As the surface charge of isolated hemicelluloses were negative, the adsorption of hemicelluloses onto softwood unbleached kraft pulp fiber was promoted by poly-DADMAC. The physical properties of handsheets increased as the molecular weight of hemicellulose increased. On the other hands, the optical property decreased with hemicellulose adsorption.

참고자료

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