Biodegradation and recycling potential of barrier coated paperboards

Sridach, W.; Hodgson, Kevin T.; Nazhad, Mousa M.

doi:10.15376/biores.2.2.179-192

Cited by 9 publications

(3 citation statements)

References 6 publications

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“…Sheets of paper covered with polyethylene, applied on both sides of the sheets of paper, showed partial loss of mass during the biodegradation test due to the presence of accessible sites of cellulose for the action of microorganisms. However, the coating layers remained unchanged during the biodegradation tests 91 …”

Section: Resultsmentioning

confidence: 99%

Bio‐based multilayer paperboard for sustainable packaging application

Santos

Noletto

Azeredo

et al. 2023

J of Applied Polymer Sci

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Bio‐based packaging materials are an emerging environment‐friendly alternative to conventional plastic food packaging materials, at least for some applications. The innovation of this work was to develop a sustainable cellulosic packaging material based on chitosan/palmitic acid/activated carbon coating with potential applications for single‐use food packaging. The study developed a multilayer paperboard (MPB), evaluating the effects of a paperboard surface coating by chitosan (2.0% w/w), palmitic acid (1.8% w/w), and activated carbon (1.2% w/w) applied in three coating layers. The water vapor transmission rate (WVTR) of coated paperboard was reduced compared to uncoated paperboard, associated with the coating suspension filling of the pores of the cellulosic matrix, the palmitic acid hydrophobic characteristic, and the nonpolar nature of activated carbon (acted by repelling the vapor molecules of water). A grease resistance of Kit solution 11 of MPB was observed. The stiffness and elongation capacity increased, indicating the rigidity and flexibility of the MPB. The deposition of palmitic acid and activated carbon influenced the roughness increase. The biodegradability in the soil after 188 days of MPB was 55.01%, and the control (uncoated paperboard) was 69.38%. The coating did not impact the degradation behavior of cellulose.

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Section: Resultsmentioning

confidence: 99%

Bio‐based multilayer paperboard for sustainable packaging application

Santos

Noletto

Azeredo

et al. 2023

J of Applied Polymer Sci

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“…The presence of fibers in the repulping reject makes it difficult to reuse the plastic and the aluminum fractions of LPB as a fully recyclable secondary raw material, and fiber recovery from the repulped LPB is affected by separation of the material layers. Cleaner separation of material layers with polyethylene-coated paperboard can be achieved with a nanofibrillated cellulose (NFC) layer (Al-Gharrawi et al 2021), yet a simple screening of repulp of coated paperboards is enough to recover most of its fibrous fraction (Sridach et al 2006). Hwang et al (2006) recycled LPB without the separation of the material layers; they found that the reuse of LPB in composite board applications was a viable alternative to its recycling via the conventional repulping route.…”

Section: Introductionmentioning

confidence: 99%

Press-forming molded pulp from repulped liquid packaging board: Role of heat input, pressing force, and defect formation

Niini

Tanninen

Leminen

et al. 2022

BioRes

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Laboratory sheets were prepared from repulped liquid packaging board (LPB) for press-forming experiments and tensile tests to study convertibility and mechanical properties of molded pulp material developed from the repulped LPB. Maximum forming depth was utilized as a convertibility indicator, and defect formation in press-formed molded pulp samples was observed with a visual analysis. Female mold temperature and pressing force were altered among press-forming parameters. The results showed that the laboratory sheets had a limited convertibility. The fragile structure of the laboratory sheets was connected to negative effects from the presence of plastic particles in the material. Increased heat input and decreased pressing force improved the convertibility, and the defect formation during the press-forming was aggravated by flattening of the material in flange and bottom regions of the samples. The use of repulped LPB as the raw material in the manufacturing of molded pulp by press-forming was found viable, and the presented solution offers an ecological alternative to conventional recycling of LPB.

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“…Another approach to reduce the plastic waste is the replacement of polymer-based by climate-neutral and sustainable paperboard products. In contrast to plastics, uncoated paperboard, mainly consisting of wood fibers, is degraded in the environment after a few weeks without leaving harmful substances (Sridach et al 2006). While paperboard products with simple geometries like folding boxes are frequently used, complex three-dimensional components (e.g., egg boxes) are manufactured by pulp molding and thus have poor surface quality and strength (Hauptmann and Majschak 2011).…”

Section: Introductionmentioning

confidence: 99%

Forming behavior of paperboard in single point incremental forming

Stein

Franke

Elling

et al. 2019

BioRes

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An increased demand for sustainable materials has led to intensive research in the field of three-dimensional paperboard forming. To date, this work has focused on forming processes with shape-giving tools. However, individual shapes are often required, especially for large-format products. Incremental forming can be used in metal processing for small batches. In this article, the technology of incremental forming is transferred to paperboard. The results showed that elevated moisture content and a superimposed counter pressure significantly increased the forming limits. In addition, the use of polymer layers increased the shape accuracy. An extended understanding of the underlying mechanisms was achieved by analyzing the forming behavior. In uniaxial and biaxial characterization tests the influence of the moisture content on the forming behavior was investigated with conditions relevant for incremental forming. It was found that the bulge test is suitable to determine the most suitable moisture content regarding the forming limits and the spring back behavior in incremental forming. In addition, it was observed that the bearable elongations during the incremental forming of paperboard are significantly higher than in the established characterization tests. The reason for this is a compression of the fiber network during forming.

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Biodegradation and recycling potential of barrier coated paperboards

Cited by 9 publications

References 6 publications

Bio‐based multilayer paperboard for sustainable packaging application

Bio‐based multilayer paperboard for sustainable packaging application

Press-forming molded pulp from repulped liquid packaging board: Role of heat input, pressing force, and defect formation

Forming behavior of paperboard in single point incremental forming

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