Study on the Quaternization Reaction Conditions for Cationic Cellulose Nanofibril

Ji Young Lee; Kyung Min Kim; Su Ho Kim; Hae Min Jo; Chul Hwan Kim

doi:10.7584/JKTAPPI.2019.12.51.6.144

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Study on the Quaternization Reaction Conditions for Cationic Cellulose Nanofibril 4차 아민화 반응에 의한 양이온성 셀룰로오스 나노피브릴 제조에 대한 연구

30 December 2019. pp. 144-151

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Abstract

In this study, cationic cellulose nanofibrils (CNFs) were prepared from laboratory-made HwBKP CNFs via a quaternization reaction as a post-treatment using glycidyl methacrylate (GMA), and their major properties were investigated. The effects of adding GMA on the zeta potential and other main properties of cationic CNFs were analyzed to determine the minimum amount of GMA that must be added in order to acquire uniform cationic CNFs. The average zeta potential of cationic CNFs increased linearly in proportion to the amount of GMA added, and the distribution of zeta potential showed that the minimum amount of GMA that must be added to oven-dried CNF in order to acquire completely cationic CNFs is 0.6%. As the quaternization reaction proceeded, no significant change in low-shear viscosity and average particle size of cationic CNFs was observed. There was also no change in the fiber width of cationic CNFs, because no further fibrillation or fiber cleavage of CNFs occurred as a result of the quaternization reaction. It was concluded that uniform cationic CNF can be produced without any changes in physical properties when the quaternization reaction is carried out by post-treatment using 0.6% GMA.

Keywords

Cellulose nanofibril (CNF)

quaternization

cationic

zeta-potential

tertiary amine

References

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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 : 51
No :6
Pages :144-151
Received Date : 2019-12-06
Revised Date : 2019-12-17
Accepted Date : 2019-12-19
DOI :https://doi.org/10.7584/JKTAPPI.2019.12.51.6.144

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

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