A preparation method of cellulose fiber networks reinforced by glutaraldehyde-treated chitosan

Wu, Tongfei

doi:10.1007/s10570-015-0609-z

Cited by 15 publications

(6 citation statements)

References 23 publications

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“…34 In particular, composite materials may serve to address the need for the development of low cost and sustainable sorbent biomaterials in view of their variable porosity and surface area. For example, a previous report 43 on chitosan-cellulose composites indicate efficient cation recognition and reusability, while other studies 44,45 revealed greater tensile strength of the composites relative to the precursors. Keungputpong et al 42 reported that the addition of starch resulted in decreased cross-linking between chitosan and glutaraldehyde with an increased structural stability, as evidenced by thermal and swelling properties of the system.…”

Section: Introductionmentioning

confidence: 99%

“…The superior mechanical properties of cellulose and its similar chemical structure to chitosan suggest that blending and cross-linking of these two biopolymers may lead to improved and modified properties in their binary composites . Related studies of composite materials ,− indicate an improvement in the sorption capacity, microstructure, mechanical, swelling, and surface chemical properties of such materials. Binary blends of cellulose and chitosan hold promise for the creation of new polymer architectures.…”

Section: Introductionmentioning

confidence: 99%

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Self-Assembled and Cross-Linked Animal and Plant-Based Polysaccharides: Chitosan–Cellulose Composites and Their Anion Uptake Properties

Udoetok

Wilson

Headley

2016

ACS Appl. Mater. Interfaces

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Self-assembled and cross-linked chitosan/cellulose glutaraldehyde composite materials (CGC) were prepared with enhanced surface area and variable morphology. FTIR, CHN, and C solid state NMR studies provided support for the cross-linking reaction between the amine groups of chitosan and glutaraldehyde; whereas, XRD and TGA studies provided evidence of cellulose-chitosan interactions for the composites. SEM, equilibrium swelling, and nitrogen adsorption studies corroborate the enhanced surface area and variable morphology of the cross-linked biopolymers. Equilibrium sorption studies at alkaline conditions with phenolic dyes, along with single component and mixed naphthenates in aqueous solution revealed variable uptake properties with the composites. The Freundlich isotherm model revealed that the composite at the highest levels of cross-linker, CGC3, had the highest sorption affinity (K; L mmol/g) for phenolphthalein (phth) followed by ortho-nitrophenyl acetic acid (ONPAA) and para-nitrophenol (PNP), as follows: Phth (5.03 × 10) > ONPAA (2.28 × 10) > PNP (8.49 × 10). The Sips isotherm model provided a good description of the sorption profile of single component and naphthenate mixtures. The monolayer uptake capacity (Q; mg g) is given in parentheses: 2-hexyldecanoic acid (S1; 115 mg/g) > 2-naphthoxyacetic acid (S3; 40.5 mg/g) > trans-4-pentylcyclohexylcarboxylic acid (S2; 13.7 mg/g). By comparison, the Q values for CGC3 with naphthenate mixtures (24.1 and 27.4 mg/g) according to UV spectroscopy and electrospray ionization mass spectrometry (ESI-HRMS). The sorbent materials generally show greater uptake with naphthenates that possess lower vs higher double bond equivalence (DBE) values. Kinetic studies revealed that the sorption of phth adopted behavior described by the pseudo-second order model, while uptake for S3 and naphthenate mixtures adopted pseudo-first order behavior. This study contributes to a greater understanding of the sorption properties of the two types of abundant biopolymers and their composites by illustrating their tunable sorption properties. The key role of hydrophobic interactions for CGC materials was evidenced by the controlled sorptive uptake of carboxylate anions with variable molecular structure.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Self-Assembled and Cross-Linked Animal and Plant-Based Polysaccharides: Chitosan–Cellulose Composites and Their Anion Uptake Properties

Udoetok

Wilson

Headley

2016

ACS Appl. Mater. Interfaces

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“…In response to the concern on a new type of formaldehyde-free adhesives, great attentions have been paid to wood adhesives prepared from renewable and natural materials without formaldehyde addition, including starch and soy flour [1][2][3]. Most studies have been based on these two materials, which are both abundant and effective in the preparation of formaldehyde-free adhesives [4,5]. However, starch is mainly derived from foodstuff such as rice, wheat, and potato, threatening the normal food supply of humans.…”

Section: Introductionmentioning

confidence: 99%

Curing Dynamics of Soy Flour-Based Adhesives Enhanced by Waterborne Polyurethane

Wang

Lou³

et al. 2019

International Journal of Polymer Science

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In this paper, thermogravimetric (TG) analysis was carried out to make clear the curing properties of soy flour-based adhesives (SFAs) enhanced by waterborne polyurethane (WPU) with different addition levels. The kinetic parameters were evaluated by a thermal dynamics method, including activation energy and preexponential factor. In addition, the structure characteristics of both soy flour and modified soy flour-based adhesives were tested by Fourier transform infrared spectroscopy (FTIR). The results revealed that the FTIR spectra of pristine soy flour-based adhesives were different from those of soy flour after alkali treatment and waterborne polyurethane modification. Furthermore, there were four main degradation phases in the derivative thermogravimetric (DTG) curves of modified soy-based adhesives while there were two phases of a defatted soy flour sample. The kinetics analysis demonstrated that the curing process could be described as a consecutive first-order curing process. Moreover, with the addition level of WPU growing, the apparent activation energy of each phase of the curing process was increasing compared with that in pristine soy-based adhesives.

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“…Based on this, glyoxal has been widely applied to cross-link the cellulose or starch-based materials, through the acetal linkages between the aldehyde and hydroxyl groups [18–23]. Furthermore, as glyoxal is used to cross-link polymers like chitosan and protein, which contain amino groups, a Schiff-base reaction between the aldehyde and hydroxyl groups might also contribute to improving the polymer performance [24,25].…”

Section: Introductionmentioning

confidence: 99%

Enhancing hydrophobicity, strength and UV shielding capacity of starch film via novel co-cross-linking in neutral conditions

Zhang

et al. 2018

R. Soc. open sci.

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Starch films are developed as the biodegradable packaging materials to replace the petroleum-based materials in recent years. Thus, it is extremely beneficial to improve the hydrophobicity and mechanical strength of starch films, through a novel approach of co-cross-linking in neutral conditions, with glyoxal and AZC. In this work, systematic studies have been conducted to assess the performance of the co-cross-linked starch along with the control starch and starch cross-linked by glyoxal or AZC alone. Results showed that the co-cross-linked starch films exhibited significantly improved hydrophobicity and strength and the wet stress reached 1.53 MPa, compared to the control, glyoxal or AZC cross-linked starch films. More interestingly, the co-cross-linked film also demonstrated excellent UV shielding capacity and transmittance at visible wavelength range. The reaction mechanism was revealed based on the findings from UV, FT-IR and NMR spectra. This work established an innovative approach to improving the performance of starch film in neutral conditions for packaging applications.

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A preparation method of cellulose fiber networks reinforced by glutaraldehyde-treated chitosan

Cited by 15 publications

References 23 publications

Self-Assembled and Cross-Linked Animal and Plant-Based Polysaccharides: Chitosan–Cellulose Composites and Their Anion Uptake Properties

Self-Assembled and Cross-Linked Animal and Plant-Based Polysaccharides: Chitosan–Cellulose Composites and Their Anion Uptake Properties

Curing Dynamics of Soy Flour-Based Adhesives Enhanced by Waterborne Polyurethane

Enhancing hydrophobicity, strength and UV shielding capacity of starch film via novel co-cross-linking in neutral conditions

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