Barrier and surface properties of chitosan-coated greaseproof paper

Kjellgren, Henrik; Gällstedt, Mikael; Engström, Gunnar; Järnström, Lars

doi:10.1016/j.carbpol.2006.02.005

Cited by 171 publications

(129 citation statements)

References 10 publications

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“…However, the chitosan coated paper exhibits slight improvement in the moisture barrier properties that are insufficient for food packaging applications due to high surface hydrophilicity. This observation is in parallel with the chitosan coated greaseproof papers, where barrier against water could not be achieved and the water sorption was higher than the sorption in the base paper [19]. When analyzing the chitosan coated paper by infrared spectroscopy and scanning electron microscopy, it was suggested that instead of forming a uniform layer on paper, chitosan penetrated deeply into the web and embedded the fibers [59].…”

Section: Chitosanmentioning

confidence: 90%

“…Usually, dispersion and solvent-based coatings can be applied to a fibrous substrate by several techniques such as, surface sizing, curtain coating, bar or rod coating and dip coating (Figure 2b-e). Recently, converters are showing interest in a new technique known as curtain coating (Figure 2b) where a uniform high coat weight is applied and found sufficient to cover the entire surface with better gas and water vapor barrier properties [19]. Surface sizing by using a so-called size press (Figure 2c) is one of the industrially mostly used methods for applying an aqueous coating to a paper [20], where the solid content of the coating slurry is kept low (less than 10%) in order to process the slurry at allowable viscosity.…”

Section: State Of Art and Scope Of Nanotechnology In Bio-based Paper mentioning

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: Chitosanmentioning

confidence: 90%

Section: State Of Art and Scope Of Nanotechnology In Bio-based Paper mentioning

confidence: 99%

Bio-Based Coatings for Paper Applications

2015

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“…4(b), was probably caused by a stress relaxation in the base paper during the coating process when the base paper was exposed to the water in the coating solution (Kjellgren et al 2006;Khwaldia 2010).…”

Section: Tensile Propertiesmentioning

confidence: 99%

Physical and Mechanical Properties of Hydroxypropyl Methylcellulose–Coated Paper as Affected by Coating Weight and Coating Composition

Khwaldia

2013

BioRes

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Hydroxypropyl methylcellulose (HPMC)-coated papers without plasticizer and plasticized with polyols were prepared, and the effects of coating weight, different plasticizers (glycerol (GLY), sorbitol (SOR), and polyethylene glycol (PEG)), and plasticizer contents (20% to 50%) on the physical and mechanical properties of the resulting biopolymer-coated papers were studied. Coating weight was the most important factor affecting mechanical properties. Conversely, increasing coating weight led to a decrease in gloss and to an increase in tensile strength (TS), elongation at break (%E), and tearing resistance of coated papers. The application of unplasticized HPMC coatings (3 g/m 2 ) on paper reduced water vapor permeability (WVP) and water absorption capacity by 25% as compared with uncoated paper. All plasticizers significantly (p < 0.05) increased WVP and Cobb 60 values of the films. With the exception of PEG, no effect was found with plasticizers on TS and %E of coated papers compared with those without plasticizer. HPMC-coated papers with PEG as a plasticizer showed significantly lower TS and higher %E and tearing resistance than the other plasticized films (p < 0.05). HPMC coating improved tensile properties and tearing resistance of paper and could be regarded as a reinforcement layer.

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“…Bio-based polymers including polysaccharides and proteins have the ability to form crystalline fi lms with low permeability to oxygen, thus making them interesting for use in packaging applications. Biode-gradable fi lms for use in food packages based on starch, 16,69,70 chitosan, [71][72][73][74] wheat gluten, 75 whey proteins 76 or zein 77 are described in detail in the literature. Bio-based materials have also been used in composite formulations, e.g.…”

Section: Biomaterialsmentioning

confidence: 99%

New ways to enhance the functionality of paperboard by surface treatment – a review

2008

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This review summarizes recent development of functional materials to improve the barrier properties of paperboard with emphasis on bio-based polymers. Focus is directed to novel application techniques and water-borne, renewable coating materials. Some aspects on substrate properties and the requirements on food packaging are discussed as are the processability, convertability, recyclability and biodegradability of packaging materials. The functionality, advantages and disadvantages of several bio-based polymers are presented in detail. Among these are starch and cellulose derivatives, chitosan, alginate, wheat gluten, whey proteins, polycaprolactone, poly(lactic acid) and polyhydroxyalkanoates. Also discussed is the enhancement of barrier properties by incorporation of nanosized materials, by application of thin protective top coatings and local reinforcement by self-healing agents.

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Barrier and surface properties of chitosan-coated greaseproof paper

Cited by 171 publications

References 10 publications

Bio-Based Coatings for Paper Applications

Bio-Based Coatings for Paper Applications

Physical and Mechanical Properties of Hydroxypropyl Methylcellulose–Coated Paper as Affected by Coating Weight and Coating Composition

New ways to enhance the functionality of paperboard by surface treatment – a review

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