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논문 기본 정보

자료유형
학술저널
저자정보
이지영 (경상국립대학교) 이수현 (경상국립대학교) 조해민 (경상국립대학교) 성용주 (충남대학교)
저널정보
한국펄프·종이공학회 펄프·종이기술 펄프·종이기술 제55권 제3호(통권 제212호)
발행연도
2023.6
수록면
15 - 23 (9page)

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초록· 키워드

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This study investigated the use of cotton linter fiber as a raw material for manufacturing carboxymethylated cellulose nanofiber (CM-CNF). Cotton linter mixed pulp (CLMP) and hardwood bleached kraft pulp (HwBKP) were used for preparing carboxymethlyated cellulose (CMC) based on the degree of carboxymethylation (CM) considering the dosage of sodium hydroxide: and monochloroacetic acid: low and high CMs. After CM reactions, we evaluated the fiber length and width, the degree of substitution (DS), and morphology of CM-CNF. The final CM-CNFs were prepared by grinding CMCs developed from CLMP and HwBKP for one, three, and five passes using a microgrinder, and their fiber width, low-shear viscosity, and zeta-potential were determined. CMC fibers were dissolved in water and swollen according to the degree of CM. A comparison of the properties of CMC developed from CLMP and HwBKP showed that the fiber length and width of the former was higher than those of the latter. In particular, the DS of CMC developed from CLMP was much higher than that developed from HwBKP owing to higher alpha-cellulose content; hence, the former displayed higher low-shear viscosity and lower zeta-potential than the latter. As the degree of CM increased, the fiber width and zeta-potential of the CM-CNFs decreased and their low-shear viscosity increased linearly. Therefore, cotton linter fiber with high alpha-cellulose content is a prospective material to produce highly anionic CM-CNF with considerably low-shear viscosity.

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ABSTRACT
1. 서론
2. 재료 및 방법
3. 결과 및 고찰
4. 결론
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