KOCC의 피브릴화 특성 및 라이너판지 물성에 미치는 영향 (Fibrillation Characteristics of KOCC and its Effect on the Physical Properties of Linerboard)

서지정보

· 발행기관 : 한국펄프·종이공학회
· 수록지 정보 : 펄프종이기술 / 50권 / 5호 / 93 ~ 99페이지
· 저자명 : 한준규, 황임정, 김진모, 최재준, 이용규, 원종명

초록

Fibrillation was attempted to determine the suitability of KOCC for the production of nanocellulose in order to utilize it as a high value added material, and the possibility of using fibrillated KOCC obtained therefrom as a papermaking additive was evaluated. A grinder was used for the fibrillation of KOCC. In order to investigate the fibrillation characteristics of KOCC, the changes of SEM images, Brookfield viscosity and degree of polymerization were measured. Also, the handsheets were prepared and the changes of major physical properties were investigated in order to evaluate the performance and applicability of fibrillated KOCC as an additive for linerboard manufacture. The fibrillation of KOCC was significantly delayed compared to the bleached chemical pulp, and the complete fibrillation was not achieved, probably due to the residual lignin content (kappa no.
19.36). It is difficult to produce nanocellulose without proper pretreatment. The average fiber length decreased to the level of fines at 20 times of grinding because KOCC was severely aged. As the fibrillation of KOCC proceeded, the degree of Brookfield viscosity continued to increase and the degree of polymerization showed a gradual decrease. Bulk, tear index, and burst index of paper were not significantly affected by the addition of fibrillated KOCC. However, it was found that the tensile index and stiffness could be improved by the combination of retention aid and fibrillated KOCC.

영어초록

Fibrillation was attempted to determine the suitability of KOCC for the production of nanocellulose in order to utilize it as a high value added material, and the possibility of using fibrillated KOCC obtained therefrom as a papermaking additive was evaluated. A grinder was used for the fibrillation of KOCC. In order to investigate the fibrillation characteristics of KOCC, the changes of SEM images, Brookfield viscosity and degree of polymerization were measured. Also, the handsheets were prepared and the changes of major physical properties were investigated in order to evaluate the performance and applicability of fibrillated KOCC as an additive for linerboard manufacture. The fibrillation of KOCC was significantly delayed compared to the bleached chemical pulp, and the complete fibrillation was not achieved, probably due to the residual lignin content (kappa no.
19.36). It is difficult to produce nanocellulose without proper pretreatment. The average fiber length decreased to the level of fines at 20 times of grinding because KOCC was severely aged. As the fibrillation of KOCC proceeded, the degree of Brookfield viscosity continued to increase and the degree of polymerization showed a gradual decrease. Bulk, tear index, and burst index of paper were not significantly affected by the addition of fibrillated KOCC. However, it was found that the tensile index and stiffness could be improved by the combination of retention aid and fibrillated KOCC.

참고자료

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