A closed-loop and sustainable approach for the fabrication of plastic-free oil- and water-resistant paper products

Li, Zhao; Rabnawaz, Muhammad; Sarwar, Mohammed G.; Khan, Bushra; Nair, Aditya; Sirinakbumrung, Nopphachai; Kamdem, D. Pascal

doi:10.1039/c9gc01865d

Cited by 52 publications

(60 citation statements)

References 30 publications

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“…All of the results were compensated to 100% relative humidity with nitrogen as a carrier gas (flow rate = 12 SCCM (SCCM stands for Standard cubic centimeters per minute)). The samples were prepared via our previously reported method 24 . All of these values were reported in units of g/m 2 day.…”

Section: Methodsmentioning

confidence: 99%

“…Polysaccharides and proteins are biodegradable in nature and their use for paper coating is very appealing, but they are hydrophilic in nature and hence they have poor water resistance 10,19–21 . Recently, our group has developed chitosan‐ graft ‐silicone oil coatings for paper with good water and oil repellent properties 22–26 . Silicone oil was chosen because of its relatively food safe nature and exceptional water and oil repellent properties that have been demonstrated in various coatings 27–34 .…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of oil‐ and water‐resistant paper without creating microplastics on disposal

Kansal

Rabnawaz

2020

J of Applied Polymer Sci

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The proliferation of microplastics in the ocean and other water bodies is becoming an alarming issue. The development of plastic-free water-and oilresistant paper can contribute toward mitigating this problem. Herein we report a plastic-free paper coating derived from chitosan and sunflower oil. Chitosan grafted sunflower oil paper coatings were prepared via the ring opening of the partially epoxidized sunflower oil with chitosan. The product of these reactions was characterized by nuclear magnetic resonance and infrared spectroscopy techniques. The sunflower oil grafted chitosan solution was coated onto a Kraft paper. The Cobb 60 and kit rating values were determined to be 8.00 g/m 2 and 7.66, respectively, for the optimal formulations. Meanwhile, the water contact angle was found to be 94.0 ± 1.6 after 30 s. Scanning electron microscopy analysis was employed to gain insight regarding the changes that occurred on the paper surface at the microscopic level.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fabrication of oil‐ and water‐resistant paper without creating microplastics on disposal

Kansal

Rabnawaz

2020

J of Applied Polymer Sci

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“…Chitosan-g-PDMS was synthesized by our reported literature method. [13] NMR spectrum of chitosan-g-PDMS was recorded in D 2 O and CD 3 COOD NMR solvents due to the solubility of chitosan in a slightly acidic medium. Figure S2 shows the spectra for chitosan-g-PDMS, where the peak at −0.15 ppm indicates that PDMS has been grafted onto chitosan.…”

Section: Repulpabilitymentioning

confidence: 99%

“…9 To address the above challenges, our group is actively working towards developing plastic-free, PFAS-free, costeffective water-and oil-resistant surfaces. [10][11][12][13][14][15] One of the key focus is the use of benign polydimethylsiloxane (PDMS) as an alternative to PFAS because PDMS is known for imparting water and oil repellent properties while still acceptable for food contact applications. [16][17][18][19][20][21][22] In a recent breakthrough study, we reported the fabrication of water-and grease-resistant coating using Chitosan-grafted-PDMS (Chitosan-g-PDMS), and the coated paper was 100% recyclable by washing the coating off.…”

Section: Introductionmentioning

confidence: 99%

Oil‐ and water‐resistant paper substrate using blends of chitosan‐graft‐polydimethylsiloxane and poly(vinyl alcohol)

Nair

Kansal

Khan

et al. 2021

J of Applied Polymer Sci

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Reported herein is an economical, plastic-and fluorine-free coating approach for oil and water repellent paper substrates using blends of poly(vinyl alcohol) and chitosan-graft-polydimethylsiloxane copolymer. The obtained coated paper showed good water-resistance, as evidenced by its low Cobb60 values of 20 ± 2.1 g/m 2 and high water contact angles of 119 ± 6.3. The kit rating of the coated paper was 7.6/12, indicating decent grease-resistant properties as compared to the kit value of 0/12 for the uncoated paper. The coated paper is also repulpable as demonstrated by the complete washing off the coating from the coated paper. Giving the cost-effective nature of the coating materials and good water and oil-resistant properties of the coated paper, the approach developed here is commercially viable, and will offer a multitude of environmental benefits such as the elimination of microplastic-and PFAS problems associated with existing paper coatings.

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“…Papers is a low‐cost, food‐safe, renewable and biodegradable material and is used extensively in the packaging industry 1–3 . In addition to good mechanical properties (e.g.…”

Section: Introductionmentioning

confidence: 99%

Quantitative determination of the oleophobicity of food packaging paper using headspace gas chromatographic technique

Dai

Wang

et al. 2021

Packag Technol Sci

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This study demonstrates a method to quantitatively measure the oleophobicities of food packaging paper via using a tracer‐assisted headspace gas chromatography by adding a 40‐μL droplet of toluene‐doped oil onto a sample surface, wherein toluene behaves as volatile tracer. After 20 s, the sample was turned vertically to remove the oil and placed in a headspace vial. The amount of toluene in the residual oil adhered to the sample surface was quantified using headspace gas chromatography under full‐evaporation conditions. The results exhibit satisfactory precision (RSDs < 2.5%) and provide quantitative information on oleophobicity. The proposed method is simple, efficient and suitable for batch sample testing.

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A closed-loop and sustainable approach for the fabrication of plastic-free oil- and water-resistant paper products

Abstract: The current open-loop practices employed to render paper substrates water- and oil-repellent for packaging and non-packaging applications have generated ocean pollution and have placed daunting burdens on landfills.

Cited by 52 publications

References 30 publications

Fabrication of oil‐ and water‐resistant paper without creating microplastics on disposal

Fabrication of oil‐ and water‐resistant paper without creating microplastics on disposal

Oil‐ and water‐resistant paper substrate using blends of chitosan‐graft‐polydimethylsiloxane and poly(vinyl alcohol)

Quantitative determination of the oleophobicity of food packaging paper using headspace gas chromatographic technique

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