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논문 기본 정보

자료유형
학술저널
저자정보
최윤혁 (충북대학교) 신수정 (충북대학교)
저널정보
한국펄프·종이공학회 펄프·종이기술 펄프·종이기술 제56권 제4호(통권 제219호)
발행연도
2024.8
수록면
28 - 35 (8page)

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Cellulose nanofibers (CNFs) are products that process cellulose at a nanoscale. The cationic surface charge of CNFs can be modified through chemical surface modification, and is expected to replace petroleum-based chemicals used as precoagulants or retention aids in the paper industry. In this study, CNFs with varying degrees of quaternary amineralization pretreatment were prepared by controlling the amount of Glycidltrimethylammonium chloride (GMA) added, and their physical properties were analyzed. The 4th aminary CNF was then combined with rosin size to produce a hand sheet. FT-IR spectrum, Stöckigt degree of sizing, and contact angle measurements of the handsheet were performed to evaluate whether 4th aminated CNF can improve rosin size retention. Zeta potential analysis showed that the zeta potential of untreated CNF (Control) was –36 mV, while CA (cation)-CNF 3 with the highest GMA addition was measured at –19 mV. The viscosity also increased with the addition of higher GMA at lower shear rates. FT-IR analysis confirmed the presence of hydrophobic groups –CH₂ and –CH₃ in rosin size in the hand sheet. Greater changes were observed in hydroxyl (-OH) wavelengths (3,100-3,500 cm<SUP>-1</SUP>) as GMA addition increased. Stöckigt"s sizing and contact angle measurements showed that the handsheet containing CA-CNF 3 had the highest water resistance. Therefore, this study confirms that the 4th aminated CNF and rosin size are maintained in the hand sheet when GMA is used for pretreatment.

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2. 재료 및 방법
3. 결과 및 고찰
4. 결론
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