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논문 기본 정보

자료유형
학술저널
저자정보
장민석 (강원대학교) 조병욱 (강원대학교)
저널정보
한국펄프·종이공학회 펄프·종이기술 펄프·종이기술 제56권 제2호(통권 제217호)
발행연도
2024.4
수록면
22 - 29 (8page)

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To expand the application of hydrophilic cellulose beads, we developed a technique to prepare hydrophobic cellulose beads with alkyl ketene dimer (AKD). The cellulose solution was prepared by dissolving chemical pulp in tetraethylammonium hydroxide (TEAH)/urea solvent, followed by the addition of AKD to disperse it at room temperature. Cellulose beads were prepared by dropwise addition of the cellulose-AKD suspension into acetic acid solution, followed by washing and drying. The effects of AKD addition on the cellulose-AKD suspension and the properties of the AKD-modified cellulose beads were investigated. It was confirmed that the cellulose beads were chemically modified by AKD, resulting in enhanced hydrophobicity. The addition of AKD to the TEAH/urea/cellulose solution led to a reduction in viscosity and surface tension. Compared to unmodified cellulose beads, AKD-modified cellulose beads exhibited lower water retention value (WRV) and water absorption capacity, as well as increased oil absorption. They also exhibited relatively higher strength (lower deformation) when swollen in water.

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