Palmitic acid functionalization of cellulose fibers for enhancing hydrophobic property

Izadyar, Soheila; Aghabozorgi, Maryam; Azadfallah, Mohammad

doi:10.1007/s10570-020-03174-x

Cited by 8 publications

(3 citation statements)

References 26 publications

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“…7(e)(3). Oil resistance is usually related to the porosity of the cellulose surface and pore size of the cellulose 51 . Oil resistance, in this case, was contributed to the penetration of Alg‐PEG200 into the KBCS matrix and filling of the pores.…”

Section: Resultsmentioning

confidence: 99%

Edible, strong, and low‐hygroscopic bacterial cellulose derived from biosynthesis and physical modification for food packaging

2023

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BackgroundThe pervasive presence of plastic packaging has led to significant environmental contamination due to excessive reliance on petrochemicals and the inherent non‐biodegradability of these materials. Bacterial cellulose (BC) films present a viable alternative for food packaging applications, owing to their environmentally friendly synthesis process, non‐toxic nature, robust mechanical strength, and biodegradability. However, the high hygroscopicity of such bio‐based materials has limited their widespread adoption, as it results in diminished strength and barrier properties. In this study, a novel approach for creating edible, transparent, robust, and high‐barrier BC‐based composite packaging was proposed through biosynthesis with the incorporation of soy protein isolate and the physical interpenetration of calcium alginate‐polyethylene glycol as a composite coating.ResultsThe finding demonstrated that the synthesized bio‐based composite material exhibits stability in water, high optical transparency, complete oil resistance, and full degradability within 1 to 2 months. Furthermore, the composite material displayed enhanced mechanical properties in both dry and wet conditions, with a tensile strength of approximately 84 MPa, outperforming commercially available kraft paper and low‐density polyethylene.ConclusionsSoy protein isolate established a rigid, coherent, and homogeneous network with BC fibrils, thereby augmenting mechanical properties. Calcium alginate can be effectively combined with BC, utilizing polyethylene glycol as a binder and plasticizer, to generate a densely packed structure with reduced hygroscopicity. This bio‐based composite material demonstrated considerable potential for application in food packaging and other value‐added sectors as a substitute for non‐degradable plastics. © 2023 Society of Chemical Industry.

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Section: Resultsmentioning

confidence: 99%

Edible, strong, and low‐hygroscopic bacterial cellulose derived from biosynthesis and physical modification for food packaging

2023

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“…The highest C PA (1.8% w / w ) promoted a negative and significant effect in the Abs, reducing to 5 g·m −2 , which is associated with the hydrophobic character of palmitic acid. The cellulose surface modification improves the hydrophobic performance of paper properties for packaging applications, being able to extend the application of cellulosic packaging even in humid conditions or in contact with food products with a high water activity [ 51 , 52 ]. The palmitic acid in the coating formulation can enhance the water resistance of the cellulose network of the paperboard.…”

Section: Resultsmentioning

confidence: 99%

Sustainable Coating Paperboard Packaging Material Based on Chitosan, Palmitic Acid, and Activated Carbon: Water Vapor and Fat Barrier Performance

Santos

Garcia

Venturini

et al. 2022

Foods

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Synthetic polymer coatings impact the biodegradable behavior of cellulosic packaging material. The environmental consequences of food packaging disposal have increased consumer concern. The present study aimed to use natural polymer coatings incorporating palmitic acid and activated carbon applied to paperboard surfaces as a sustainable alternative to improve cellulosic packaging material’s moisture and fat barrier properties, minimizing the environmental impact. The coating formulation was defined using a Factorial Experimental Design with independent variables: chitosan, palmitic acid, activated carbon concentrations, and the number of coating layers. The highest concentration of chitosan (2.0% w/w) filled the pores of the cellulosic paperboard network, supporting the compounds incorporated into the filmogenic matrix and improving the fat resistance. The water vapor permeability of the coated paperboard material (range: 101 ± 43 to 221 ± 13 g·d−1·m−2) was influenced by the hydrophobicity effect of palmitic acid, the non-polar characteristic of activated carbon, and the number of applied layers. The coating formulation selected was a chitosan concentration of 2.0% (w/w), a palmitic acid concentration of 1.8% (w/w), an activated carbon concentration of 1.2% (w/w), and an application of three layers. The coating provides the potential for a paperboard surface application, improving the cellulosic packaging material’s fat and moisture barrier properties and maintaining biodegradability and recyclability.

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“…Syverud et al (2011) applied cetyltrimethylammonium bromide (CTAB) onto a TEMPO-oxidized surface to achieve increased hydrophobicity. Izadyar et al (2020) elucidated the functionalization of cellulosic fibers with palmitic acid, in combination with zinc ions. Such association of metal ions with polysaccharide-based surfaces can be increased by oxidation, such as with use of the 2,2,6,6-tetramethylpiperidinyloxy (TEMPO) radical species (Isogai et al 2011).…”

Section: Adsorbed Hydrophobic Compounds Ion-pair Associationmentioning

confidence: 99%

Hydrophobic molecular treatments of cellulose-based or other polysaccharide barrier layers for sustainable food packaging: A Review

Szlek

Reynolds

Hubbe

2022

BioRes

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Paper, nanocellulose, and other polysaccharide-based materials can be excellent candidates for food packaging barrier layers, except that they tend to be vulnerable to moisture. This article reviews published research describing various chemical treatments having the potential to render hydrophobic character to such layers. Emphasis is placed on systems in which hydrophobic monomers are used to treat either particles or sheets comprised largely of polysaccharides. A goal of this review is to identify combinations of materials and procedures having promise for scale-up to industrial production, while providing effective resistance to moisture. The idea is to protect the underlying polysaccharide-based barrier layers such that they can continue to impede the transfer of such permeants as oxygen, greases, flavor compounds, and water vapor. A further goal is to minimize any adverse environmental impacts associated with the treatments. Based on the research articles considered in this review, promising hydrophobic treatments can be achieved involving silanes, ester formation, other covalent interactions, plasma treatments, and to some extent by various treatments that do not require formation of covalent bonds. The article is designed such that readers can skip ahead to items of particular interest to them.

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Palmitic acid functionalization of cellulose fibers for enhancing hydrophobic property

Cited by 8 publications

References 26 publications

Edible, strong, and low‐hygroscopic bacterial cellulose derived from biosynthesis and physical modification for food packaging

Edible, strong, and low‐hygroscopic bacterial cellulose derived from biosynthesis and physical modification for food packaging

Sustainable Coating Paperboard Packaging Material Based on Chitosan, Palmitic Acid, and Activated Carbon: Water Vapor and Fat Barrier Performance

Hydrophobic molecular treatments of cellulose-based or other polysaccharide barrier layers for sustainable food packaging: A Review

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