Cross-linking of cellulose nanofiber films with glutaraldehyde for improved mechanical properties

Jei Gyeong Jeon; Hyun Chan Kim; Ramasubba Reddy Palem; Jaehwan Kim; Tae June Kang

doi:10.1016/j.matlet.2019.05.002

Cross-linking of cellulose nanofiber films with glutaraldehyde for improved mechanical properties

Jei Gyeong Jeon, Hyun Chan Kim, Ramasubba Reddy Palem, Jaehwan Kim, Tae June Kang

Department of Biomedical Engineering

Inha University

Research output: Contribution to journal › Article › peer-review

61 Scopus citations

Abstract

In this work, we present a method to improve the mechanical properties of CNF films by replacing the secondary hydrogen bonding in CNF films with glutaraldehyde (GA)-based covalent bonds using acidic catalysts. The CNF film treated with GA exhibits ∼180% higher tensile strength than that for the untreated CNF film. In terms of the elastic modulus, the film shows a value of 12.3 GPa, which is ∼160% higher compared to the untreated CNF film. Using Fourier transform infrared (FTIR) and X-ray diffraction (XRD) analyses on the films, it was found that the mechanical properties of the GA-treated films were significantly affected by the relationship between the degree of GA cross-linking and the reduction in the crystallinity index of the CNFs.

Original language	English
Pages (from-to)	99-102
Number of pages	4
Journal	Materials Letters
Volume	250
DOIs	https://doi.org/10.1016/j.matlet.2019.05.002
State	Published - 1 Sep 2019

Keywords

Cellulose nanofiber
Glutaraldehyde
Mechanical property
Thin films

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10.1016/j.matlet.2019.05.002

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title = "Cross-linking of cellulose nanofiber films with glutaraldehyde for improved mechanical properties",

abstract = "In this work, we present a method to improve the mechanical properties of CNF films by replacing the secondary hydrogen bonding in CNF films with glutaraldehyde (GA)-based covalent bonds using acidic catalysts. The CNF film treated with GA exhibits ∼180% higher tensile strength than that for the untreated CNF film. In terms of the elastic modulus, the film shows a value of 12.3 GPa, which is ∼160% higher compared to the untreated CNF film. Using Fourier transform infrared (FTIR) and X-ray diffraction (XRD) analyses on the films, it was found that the mechanical properties of the GA-treated films were significantly affected by the relationship between the degree of GA cross-linking and the reduction in the crystallinity index of the CNFs.",

keywords = "Cellulose nanofiber, Glutaraldehyde, Mechanical property, Thin films",

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T1 - Cross-linking of cellulose nanofiber films with glutaraldehyde for improved mechanical properties

AU - Jeon, Jei Gyeong

AU - Kim, Hyun Chan

AU - Palem, Ramasubba Reddy

AU - Kim, Jaehwan

AU - Kang, Tae June

PY - 2019/9/1

Y1 - 2019/9/1

N2 - In this work, we present a method to improve the mechanical properties of CNF films by replacing the secondary hydrogen bonding in CNF films with glutaraldehyde (GA)-based covalent bonds using acidic catalysts. The CNF film treated with GA exhibits ∼180% higher tensile strength than that for the untreated CNF film. In terms of the elastic modulus, the film shows a value of 12.3 GPa, which is ∼160% higher compared to the untreated CNF film. Using Fourier transform infrared (FTIR) and X-ray diffraction (XRD) analyses on the films, it was found that the mechanical properties of the GA-treated films were significantly affected by the relationship between the degree of GA cross-linking and the reduction in the crystallinity index of the CNFs.

AB - In this work, we present a method to improve the mechanical properties of CNF films by replacing the secondary hydrogen bonding in CNF films with glutaraldehyde (GA)-based covalent bonds using acidic catalysts. The CNF film treated with GA exhibits ∼180% higher tensile strength than that for the untreated CNF film. In terms of the elastic modulus, the film shows a value of 12.3 GPa, which is ∼160% higher compared to the untreated CNF film. Using Fourier transform infrared (FTIR) and X-ray diffraction (XRD) analyses on the films, it was found that the mechanical properties of the GA-treated films were significantly affected by the relationship between the degree of GA cross-linking and the reduction in the crystallinity index of the CNFs.

KW - Cellulose nanofiber

KW - Glutaraldehyde

KW - Mechanical property

KW - Thin films

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U2 - 10.1016/j.matlet.2019.05.002

DO - 10.1016/j.matlet.2019.05.002

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SN - 0167-577X

VL - 250

SP - 99

EP - 102

JO - Materials Letters

JF - Materials Letters

ER -

Cross-linking of cellulose nanofiber films with glutaraldehyde for improved mechanical properties

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Keywords

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