Improvement of Paper Hydrophobic Properties by Using Biodegradable Natural Polymer – Chitosan

Vikele, Laura; Treimanis, A.; Laka, Marianna

doi:10.4028/www.scientific.net/kem.559.111

Cited by 3 publications

(7 citation statements)

References 5 publications

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“…The research involved conducting trials on five distinct fiber compositions, both with and without the addition of 3% NFC and 2.5% CHIT. This ratio of chitosan was determined as the most effective from our earlier studies with pure cellulose and wastepaper fibers [ 18 , 19 , 20 ]. The research delved into understanding how the introduction of NFC and chitosan in varying sequences influenced the characteristics of the fibrous compositions.…”

Section: Resultsmentioning

confidence: 99%

“…In the research, the synergistic effects of the NFC and CHIT were examined by using 2.5% chitosan. This percentage was selected in accordance with our previous research [ 18 , 19 , 20 ] and provided the baseline for further experiments.…”

Section: Methodsmentioning

confidence: 99%

“…The degree of deacetylation of chitosan can vary, affecting the properties of the molecule, including its solubility, viscosity, and reactivity [ 13 , 14 ]. Chitosan has been shown to improve the wet strength of paper by crosslinking with cellulose fibers [ 15 , 16 , 17 , 18 , 19 , 20 , 21 ]. The crosslinking between the chitosan and cellulose fibers is due to the electrostatic interaction between the positively charged amino group of chitosan and the negatively charged hydroxyl groups of cellulose.…”

Section: Introductionmentioning

confidence: 99%

“…This interaction can form hydrogen bonds, covalent bonds, and a polyelectric complex, which stabilize the cellulose fibers and prevent them from disintegrating in the presence of water [ 11 , 13 , 15 , 17 , 19 ]. Chitosan can also form a barrier on the surface of paper that protects it from water damage [ 18 , 20 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

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Enhancing Paper Packaging’s Wet Strength Using the Synergy between Chitosan and Nanofibrillated Cellulose Additives

Andze,

Skute,

Zoldners

et al. 2024

Polymers

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The demand for eco-friendly packaging materials has urged researchers to look for alternatives to petroleum-based polymers. In this regard, paper-based products have turned out to be a promising choice; however, their weak resistance to water has limited their application. The use of various additives to enhance paper’s moisture resistance is a common practice. However, considering the growing global agenda for sustainable development, the search for new bio-based paper additives has become increasingly important. This study investigated the potential synergistic impact of the addition of nanofibrillated cellulose (NFC) and chitosan additives (CHIT) to different fiber combinations to improve paper’s properties, in particular, their wet strength. The efficacy of the additive application order was examined and was found to be crucial in achieving the desired outcomes. The results showed that incorporating CHIT after NFC enhanced the paper’s tensile and burst indicators, as well as the paper stretch in the dry state, by 35–70%, 35–55%, and 20–35%, respectively. In addition, the tensile index and stretch in the wet state improved 9–13 times and 2.5–5.5 times over, respectively. The air permeability decreased 2.5–12 times over. These findings demonstrate that the sequential addition of the NFC and CHIT additives yield a greater enhancement of paper’s properties than using each additive separately.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhancing Paper Packaging’s Wet Strength Using the Synergy between Chitosan and Nanofibrillated Cellulose Additives

Andze,

Skute,

Zoldners

et al. 2024

Polymers

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“…The infrared spectral bands are compared with the Nylon 6 and cotton (70)/PA (30) corresponding bands. 15–20,23…”

Section: Resultsmentioning

confidence: 99%

Surface characteristics of sol-gel treated single jersey plated socks

Bake

Kukle

Beļakova

2021

Journal of Engineered Fibers and Fabrics

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This study examines properties of the cotton/polyamide plain plated commercial socks (CO 81%/PA 19%) and pure polyamide fabric subjected to the multifunctional treatment by a sol-gel coating technique where tetraethyl-orthosilicate (TEOS) and zinc acetate dihydrate (ZAD) were used as precursors. Commercially available sock is produced on a single cylinder sock knitting machine which results in two surfaces (cotton and polyamide), with dissimilar characteristics thus leading to necessity of their separate studies. Experimental part examines surface structural clarification and compound identification using infrared spectroscopy. To assess the impact of modification such properties as air permeability must be tested and analysed. Pilot tests of antibacterial activity against Bacillus subtilis mscL 1141 and Staphylococcus aureus mscL 334 where carried out. Due to the modification consolidation treatment temperature below the destruction of material and the chemical compounds vibrational modes overlap, but in regions 1170–1650 cm−1 and 3200–3395 cm−1 show the presence of bounds corresponding to sol-gel coating presence on the surface.

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Partial Replacement of Cationic Starch by Cationic Hardwood Kraft Lignin Does Not Compromise Key Paper Properties

Figueiredo

Pinto²,

Evtuguin

et al. 2023

Sustainability

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Competition issues with food industry have recently boosted the exploration of alternative solutions capable of replacing starch in papermaking to a certain extent. Covalent grafting of quaternary ammonium groups onto LignoBoost® Eucalyptus kraft lignin has recently shown promise in this regard as the cationic products feature excellent water solubility across the entire pH scale. Considering these suitable properties, cationic kraft lignin was applied and evaluated, for the first time, in the perspective of partial substitution of cationic starch in papermaking, using bleached Eucalyptus kraft pulp. Based on an assessment of key paper properties, such as mechanical (tensile, bursting, and tearing indexes), structural (roughness, capillarity rise, air resistance, internal strength, and water contact angle), and optical ones (brightness, opacity, and relative color change), it is safe to conclude that the partial replacement of conventional cationic starch by cationic lignin does not compromise these features. The results also show that properties can be fine-tuned by varying the degree of lignin derivatization, providing paper-specific solutions for replacing starch by lignin potentially available at large-scale at the pulp and paper industry, closing the loop within the circular economy concept.

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Improvement of Paper Hydrophobic Properties by Using Biodegradable Natural Polymer – Chitosan

Cited by 3 publications

References 5 publications

Enhancing Paper Packaging’s Wet Strength Using the Synergy between Chitosan and Nanofibrillated Cellulose Additives

Enhancing Paper Packaging’s Wet Strength Using the Synergy between Chitosan and Nanofibrillated Cellulose Additives

Surface characteristics of sol-gel treated single jersey plated socks

Partial Replacement of Cationic Starch by Cationic Hardwood Kraft Lignin Does Not Compromise Key Paper Properties

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