Chitosan–caseinate bilayer coatings for paper packaging materials

Khwaldia, Khaoula; Basta, Altaf H.; Aloui, Hajer; El‐Saied, Houssni

doi:10.1016/j.carbpol.2013.08.086

Cited by 136 publications

(73 citation statements)

References 34 publications

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“…In addition, by increasing the concentration of caseinate (7%, 10%, and 12% w/w), the WVP gradually decreased. The improvements in the mechanical properties (tensile strength and elongation) of the coated papers were noted and mainly dependent on the coating weight [29].…”

Section: Caseins and Caseinatesmentioning

confidence: 98%

“…Sodium caseinate (NaCAS) possesses good film-forming properties from aqueous solution due to its random coil structure and strong interaction among the polymeric chains by intermolecular hydrogen bonding and hydrophobic bonds [63]. NaCAS film has good barrier and mechanical properties and hence can be employed as a paper coating: an improvement in the barrier and mechanical properties of paper with a bar-coated NaCAS layer has been reported [28,29]. The thickness of the coated papers was dependent on coating weight: by increasing the coating weight from 5 to 16 g/m 2 , the thickness of the NaCAS coated papers increased almost linearly as it formed a continuously smooth surface layer.…”

Section: Caseins and Caseinatesmentioning

confidence: 99%

“…A bi-layer bar coating system of caseinate/chitosan provided paper with high water vapor barrier and good mechanical properties along with improved flexibility and adhesion between the bi-layer coating and the paper [29]. The effect of sodium caseinate, mica, carnauba wax and glycerol as a coating suspension applied by bar coating was studied and the composition was optimized to minimize WVP and improve mechanical properties of the coated paper [64]: increasing the concentrations of mica, carnauba wax, and sodium caseinate and decreasing the glycerol amount could result in the optimum barrier and mechanical properties.…”

Section: Caseins and Caseinatesmentioning

confidence: 99%

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Bio-Based Coatings for Paper Applications

2015

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Abstract:The barrier resistance and wettability of papers are commonly controlled by the application of petroleum-based derivatives such as polyethylene, waxes and/or fluor-derivatives as coating. While surface hydrophobicity is improved by employing these polymers, they have become disfavored due to limitations in fossil-oil resources, poor recyclability, and environmental concerns on generated waste with lack of biodegradation. Alternatively, biopolymers including polysaccharides, proteins, lipids and polyesters can be used to formulate new pathways for fully bio-based paper coatings. However, difficulties in processing of most biopolymers may arise due to hydrophilicity, crystallization behavior, brittleness or melt instabilities that hinder a full exploitation at industrial scale. Therefore, blending with other biopolymers, plasticizers and compatibilizers is advantageous to improve the coating performance. In this paper, an overview of barrier properties and processing of bio-based polymers and their composites as paper coating will be discussed. In particular, recent technical advances in nanotechnological routes for bio-based nano-composite coatings will be summarized, including the use of biopolymer nanoparticles, or nanofillers such as nanoclay and nanocellulose. The combination of biopolymers along with surface modification of nanofillers can be used to create hierarchical structures that enhance hydrophobicity, complete barrier protection and functionalities of coated papers. OPEN ACCESSCoatings 2015, 5 888

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Section: Caseins and Caseinatesmentioning

confidence: 98%

Section: Caseins and Caseinatesmentioning

confidence: 99%

Section: Caseins and Caseinatesmentioning

confidence: 99%

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Bio-Based Coatings for Paper Applications

2015

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“…As a matter of fact, barrier property is a desirable attribute of food/medical packaging materials (Zhang & Xiao, 2013). The effectiveness of packaging materials is related to their mass-transport properties (Khwaldia, Basta, Aloui, & El-Saied, 2014). For this reason, the barrier properties against water-vapor and gases are regard as important performances of cellulosic paper, which influences the application in food and medical packaging.…”

Section: Air Permeability and Water Absorption Of Surface-coated Papermentioning

confidence: 99%

Chitosan/titanium dioxide nanocomposite coatings: Rheological behavior and surface application to cellulosic paper

Tang

Zhang

et al. 2016

Carbohydrate Polymers

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“…Biodegradable plastics are also combined in order to obtain multilayers. Biodegradable adhesives have recently been designed in order to produce totally compostable multilayers [5][6][7][8][9][10][11][12][13][14]. In this work, the multilayers studied are built by the combination of several compostable materials bonded by a compostable adhesive.…”

Section: Introductionmentioning

confidence: 99%

UPLC–ESI-Q-TOF-MSE and GC–MS identification and quantification of non-intentionally added substances coming from biodegradable food packaging

Canellas¹,

Vera²,

Nerı́n³

2015

Anal Bioanal Chem

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Biodegradable packagings are made by combination of several materials creating a multilayer with the properties needed. Each material, including the adhesive, could contain substances that could migrate to the food. In this work, gas chromatography coupled with mass spectrometry and ultra-high-pressure liquid chromatography coupled with quadrupole time-of-flight mass spectrometry were used to identify the biodegradable adhesive compounds. Five of the 13 compounds identified were nonintentionally added substances; they were neoformed compounds created by the reaction of added compounds in the adhesive. Moreover, the migration of the compounds through four different biodegradable materials-paper, polylactic acid, ecovio®, and polyvinyl alcohol-was studied for the first time. Three of the 13 compounds identified in the adhesive migrated from the adhesive to Tenax®, which was used as a solid food simulant. One of them, 2,4,7,9-tetramethyl-5-decyne-4,7-diol, was an intentionally added substance, and the other two were 1,6-dioxacyclododecane-7,12-dione and 1,6,13,18-tetraoxacyclotetracosane-7,12,19,24-tetraone, which were nonintentionally added substances identified in this work. Higher migration values (ranging from 0.81 to 2.07 mg/kg) were observed for migration through ecovio® than through the multilayer made by combination of ecovio® and polyvinyl alcohol (0.07-0.39 mg/kg) owing to the barrier effect provided by polyvinyl alcohol. The migration values for migration through paper and polylactic acid were below the limits of detection.

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Chitosan–caseinate bilayer coatings for paper packaging materials

Cited by 136 publications

References 34 publications

Bio-Based Coatings for Paper Applications

Bio-Based Coatings for Paper Applications

Chitosan/titanium dioxide nanocomposite coatings: Rheological behavior and surface application to cellulosic paper

UPLC–ESI-Q-TOF-MSE and GC–MS identification and quantification of non-intentionally added substances coming from biodegradable food packaging

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