Combination of Glyoxal and Chitosan as the Crosslinking System to Improve Paper Wet Strength

Zhang, Lanhe; Zhang, Hui; Song, Zhanqian; Qian, Xueren

doi:10.15376/biores.8.4.6087-6096

Cited by 6 publications

(6 citation statements)

References 18 publications

(21 reference statements)

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“…Chitosan or its derivatives are added to water-suspended paper pulp mixture with non-fibrous additives furnish [7,8] or used for coating paper [9][10][11] to obtain packaging papers with improved tensile and burst strength properties. The wet and dry tensile strength values of recycled corrugated carton pulp were improved by different dosages of high-molecular-weight Chitosan [12].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Mechanical, Physical, and Anti-Fungal Properties of Flax Laboratory Papersheets with the Nanoparticles Treatment

et al. 2020

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In the present study, novel mixed additives of Chitosan or Paraloid B-72 combined with nanoparticles (NPs) of Ag, ZnO, or cellulose (NCL) were examined for their effects on the mechanical, optical, and fungal inhibition properties of the papersheets produced. The highest tensile, tear, and burst indices of the papersheets were observed for flax pulp treated with additives of Paraloid B-72 + ZnO NP (1%), Chitosan + ZnO NP (3%), and Chitosan + NCL (3%) at levels of 59.93 N·m/g, 18.45 mN·m2/g, and 6.47 kPa·m2/g, respectively. Chitosan + ZnO NP (1%) added to flax pulp showed the highest fungal mycelial inhibition (FMI) (1.85%) against Aspergillus flavus. Chitosan + Ag NP (1%) exhibited the highest FMI percentage (11.48%) when added to pulp against A. terreus. Pulp treated with Paraloid B-72 + Ag NP (1%) exhibited the highest activity against Stemphylium solani with an FMI value of 3.7%. The results indicate that the technological properties of the papersheets were enhanced with the addition of novel mixtures to the pulp.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the Mechanical, Physical, and Anti-Fungal Properties of Flax Laboratory Papersheets with the Nanoparticles Treatment

et al. 2020

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“…The liquid phase was removed by a sand core funnel and the remained filamentous precipitate was washed with an excess amount of 95% (v/v) ethanol to neutral pH. The white powder was dried under vacuum at 55 °C for 12 h …”

Section: Methodsmentioning

confidence: 99%

“…The titration end point was obtained when the red color of the mixture vanished for 30 s and did not appear again. The degree of substitution of MAC was calculated by using Equation

D_{normals} = \frac{167.09 \times W}{100 \times 99 - (99 - 1) \times W} \times 100

where D s (%) is the degree of substitution of MAC, 167.09 (g mol −1 ) is the mean relative molecular mass of the chitosan unit with 87% deacetylation, and W (%) is the mass percent of substituent. W is determined using Equation

W = \frac{(c_{1} v_{1} - c_{2} v_{2}) \times 10^{- 3} \times M}{m} \times 100

where M is the relative molecular mass of maleic acid group, m is the mass of MAC sample; c 1 (mol L −1 ) and v 1 (L) are the molar concentration and volume of NaOH standard aqueous solution, and c 2 (mol L −1 ) and v 2 (L) are the molar concentration and consumed volume of HCl standard aqueous solution.…”

Section: Methodsmentioning

confidence: 99%

Extending Time Profile of Morphine‐Induced Analgesia Using a Chitosan‐Based Molecular Imprinted Polymer Nanogel

Hassanzadeh

Ghaemy

Ahmadi

2016

Macromolecular Bioscience

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Chitosan-based molecular imprinted polymer (CS-MIP) nanogel is prepared in the presence of morphine template, fully characterized and used as a new vehicle to extend duration of morphine analgesic effect in Naval Medical Research Institute mice. The CS-MIP nanogel with ≈25 nm size range exhibits 98% loading efficiency, and in vitro release studies show an initial burst followed by an extended slow release of morphine. In order to study the feasibility of CS-MIP nanogel as morphine carrier, 20 mice are divided into two groups randomly and received subcutaneous injection of morphine-loaded CS-MIP and morphine (10 mg kg ) dissolved in physiologic saline. Those received injection of morphine-loaded CS-MIP show slower and long lasting release of morphine with 193 min effective time of 50% (ET50) analgesia compared to 120 min ET50 in mice received morphine dissolved in physiologic saline. These results suggest that CS-MIP nanogel can be a possible strategy as morphine carrier for controlled release and extension of its analgesic efficacy.

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“…It has been used as a papermaking additive and for the surface treatment of paper for decades. Chitosan graft copolymers have been exploited for making paper products of improved dry strength, and chitosan has been added to cellulose and unbleached sulfite to increase the burst, dry-tensile, and wet-tensile properties of handsheets [25–27]. Its use has been recommended for the manufacture of electric insulation papers and various types of technical papers, particularly wet-strength papers.…”

Section: Introductionmentioning

confidence: 99%

Quaternary ammonium salt of chitosan: preparation and antimicrobial property for paper

et al. 2015

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A series of 2-hydroxypropyltrimethyl ammonium chloride chitosan (HACC) was prepared by the reaction of chitosan with glycidyl trimethyl ammonium chloride. Structure of HACC was characterized by FT IR and 1H NMR spectroscopies, and it was proved that substitution reaction mainly occurs on the N element. Antimicrobial activities of HACC was examined against S. aureus, E. coli, and A. niger. Results indicatd that the inhibitory effects of HACC solutions were varied with HACC concentration, quaternization degrees, pH values, metal ions, and heat treatment. The antimicrobial properties of handsheets prepared from HACC were studied by the inhibition zone method, and the sheets had good antimicrobial properties against S. aureus and E. coli, and low inhibition rate against A. niger.

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Combination of Glyoxal and Chitosan as the Crosslinking System to Improve Paper Wet Strength

Cited by 6 publications

References 18 publications

Evaluation of the Mechanical, Physical, and Anti-Fungal Properties of Flax Laboratory Papersheets with the Nanoparticles Treatment

Evaluation of the Mechanical, Physical, and Anti-Fungal Properties of Flax Laboratory Papersheets with the Nanoparticles Treatment

Extending Time Profile of Morphine‐Induced Analgesia Using a Chitosan‐Based Molecular Imprinted Polymer Nanogel

Quaternary ammonium salt of chitosan: preparation and antimicrobial property for paper

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