Effect of the Pretreatment on the Properties of Cellulose Nanofibril Derived from Recycled Pulp

Junghwan Ryu; Hakmyoung Lee; Hye Jung Youn

doi:10.7584/JKTAPPI.2023.6.55.3.41

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2023 Vol.55, Issue 3 Preview Page Next Page

Original Paper

Effect of the Pretreatment on the Properties of Cellulose Nanofibril Derived from Recycled Pulp 전처리가 재활용펄프 유래 셀룰로오스 나노피브릴의 특성에 미치는 영향

30 June 2023. pp. 41-50

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Abstract

Although wood pulp is the main raw material for the production of cellulose nanofibrils (CNF), seaweed, agricultural waste, and recycled pulp can also be used as raw materials. Despite requiring thorough cleaning, recycled pulp offers a cost-effective alternative for CNF production. This study aims to explore the feasibility of utilizing CNF derived from pretreated recycled pulp by comparing its quality to CNF derived from bleached kraft virgin pulp. The performance of CNF derived from chemically treated recycled pulp was evaluated by fabricating it into a sheet form. The results showed that the reduction of the inorganic content resulted in approximately 40% and 50% increase in light transmittance and dry tensile strength, respectively. In particular, carboxymethylation pretreatment enabled the fabrication of CNF sheets with over 90% light transmittance, while cationization pretreatment allowed for the development of CNF sheets with dry tensile strength exceeding 150 MPa. It was found that the reduction in ash content of recycled pulp is very important to improve the properties of CNF. Consequently, chemical pretreatment can be employed to use recycled pulp as the raw material for CNF.

Keywords

Ash content

cellulose nanofibril

pretreatment

recycled pulp

optical properties

tensile strength

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Information

Publisher :Korea Technical Association of The Pulp and Paper Industry
Publisher(Ko) :한국펄프종이공학회
Journal Title :Journal of Korea TAPPI
Journal Title(Ko) :펄프종이기술
Volume : 55
No :3
Pages :41-50
Received Date : 2023-05-18
Revised Date : 2023-06-19
Accepted Date : 2023-06-21
DOI :https://doi.org/10.7584/JKTAPPI.2023.6.55.3.41

Journal of Korea TAPPI ISSN:0253-3200(Print) 펄프종이기술

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