Challenges and new opportunities on barrier performance of biodegradable polymers for sustainable packaging

Wu, Feng; Misra, Manjusri; Mohanty, Amar K.

doi:10.1016/j.progpolymsci.2021.101395

Cited by 483 publications

(274 citation statements)

References 362 publications

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“…The concerns about the accumulating plastic waste pollution as well as the increasing environmental pressure on global warming have stimulated tremendous attention toward bioplastics [1][2][3]. Among them, poly(glycolic acid) (PGA) holds promising characteristics [4], such as excellent mechanical properties [5], high heat distortion temperature, as well as exceptionally high gas barrier properties [6][7][8]. Furthermore, the polymer chains, which have a similar chemical structure to poly(lactic acid) (PLA) but without the methyl side group, are tightly packed together, thus producing elevated thermal stability and high degree of crystallinity [4].…”

Section: Introductionmentioning

confidence: 99%

The Blending of Poly(glycolic acid) with Polycaprolactone and Poly(l-lactide): Promising Combinations

et al. 2021

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Poly(glycolic acid) (PGA) holds unique properties, including high gas barrier properties, high tensile strength, high resistance to common organic solvents, high heat distortion temperature, high stiffness, as well as fast biodegradability and compostability. Nevertheless, this polymer has not been exploited at a large scale due to its relatively high production cost. As such, the combination of PGA with other bioplastics on one hand could reduce the material final cost and on the other disclose new properties while maintaining its “green” features. With this in mind, in this work, PGA was combined with two of the most widely applied bioplastics, namely poly(l-lactide) (PLLA) and poycaprolactone (PCL), using the melt blending technique, which is an easily scalable method. FE-SEM measurements demonstrated the formation of PGA domains whose dimensions depended on the polymer matrix and which turned out to decrease by diminishing the PGA content in the mixture. Although there was scarce compatibility between the blend components, interestingly, PGA was found to affect both the thermal properties and the degradation behavior of the polymer matrices. In particular, concerning the latter property, the presence of PGA in the blends turned out to accelerate the hydrolysis process, particularly in the case of the PLLA-based systems.

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Section: Introductionmentioning

confidence: 99%

The Blending of Poly(glycolic acid) with Polycaprolactone and Poly(l-lactide): Promising Combinations

et al. 2021

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“…where ν is the sedimentation rate, g/s; m is the sediment weight, g; τ is the time, s. sedimentation (kinetic) instability associated with the gradual deposition of solid particles under the influence of gravity [6,7]. The greater the difference of polarity between the dispersed phase and the dispersive medium, the stronger the tendency of the dispersed phase particles to aggregate [8,9].…”

Section: Materials and Methods Of Researchmentioning

confidence: 99%

Development of sedimentation resistant water-acrylic titanium dioxide dispersions

Dyuryagina

Луценко

2021

EEJET

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According to the results of the research, the effect of stabilization of dispersions of titanium dioxide in water-acrylic compositions was established. It was proved that in aqueous-acrylic suspensions at all variations of film-forming agent (from 0 to 5 g/dm3), the maximum of stabilizing activity of the surfactants under study is achieved at CSAS=0.25 g/dm3. The minimum deposition rate of titanium dioxide dispersions at a dosing of 0.25 g/dm3 of sodium polyacrylate was at the level of 0.097 10-3 g/s at any content of film-forming agent (Cff=0.5÷5 g/dm3) in suspensions. At the introduction of the same concentration (CSAS=0.25 g/dm3) of the polyether siloxane copolymer, a decrease in sedimentation rate to 0.053 10-3 g/s in suspensions with a limited acryl content (C≤1 g/dm3) was recorded. At an increase in the concentration of a film-forming agent (C>1 g/dm3) in suspensions, sedimentation stability decreased, which is proved by an increase in the sedimentation rate of TiO2 to 0.110∙10-3 g/s at Cff=5.0 g/dm3. It was found that in aqueous-acrylic suspensions with the film-forming content from 0.5 to 1 g/dm3, the minimum average diameter was 2.64÷3.1 μm CSAS=0.25 g/dm3. Further concentration of acryl (Cff=4÷5 g/dm3) at the same dosage of polyether siloxane copolymer was accompanied by an increase in the average particle size up to 4.30÷4.61 μm. The maximum of wedging activity of sodium polyacrylate (CSAS=0.25 g/dm3) corresponds to the same minimum of the average diameter (2–3 μm).

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“…Among biodegradable polymers are, e.g., poly(butylene succinate) (PBS), poly(lactic acid) (PLA), poly(butylene adipate terephthalate) (PBAT), poly(butylene succinate-co-adipate) (PBSA), cellulose, cellulose acetate, poly(hydroxybutyrate) (PHB) and its co-polymers, starch, and other natural polymers. All these polymers are readily biodegradable within relatively short time, and the kinetics of degradation depends on the environment, i.e., marine, fresh water, soil, home or industrial composting, landfill, and anaerobic digestion [30]. As some of them are so quickly biodegradable, their practical use in the packaging material is limited.…”

Section: Ticsmentioning

confidence: 99%

New Circular Challenges in the Development of Take-Away Food Packaging in the COVID-19 Period

2021

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The COVID-19 pandemic has set new challenges for the HoReCa industry. Lockdowns have coincided with and strongly impacted the industrial transformation processes that have been taking place for a decade. Among the most important HoReCa transition processes are those related to the rapid growth of the delivery-food market and ordering meals via internet platforms. The new delivery-food market requires not only the development of specific distribution channels, but also the introduction of appropriate, very specific food packaging. Food packaging and its functionality are defined by the administrative requirements and standards applicable to materials that have contact with food and principally through the prism of the ecological disaster caused by enormous amounts of plastic waste, mainly attributed to the food packaging. To meet environmental and administrative requirements, new technologies to produce food packaging materials are emerging, ensuring product functionality, low environmental impact, biodegradability, and potential for composting of the final product. However, predominantly, the obtained product should keep the nutritional value of food and protect it against changes in color or shape. Current social transformation has a significant impact on the food packaging sector, on one hand creating a new lifestyle for society all over the world, and on the other, a growing awareness of the negative impact of humans on the environment and increasing responsibility for the planet. The COVID-19 pandemic has highlighted the need to develop a circular economy based on the paradigm of shortening distribution channels, using local raw materials, limiting the consumption of raw materials, energy, water, and above all, minimizing waste production throughout the life cycle of products, all of which are in line with the idea of low-carbon development.

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Challenges and new opportunities on barrier performance of biodegradable polymers for sustainable packaging

Cited by 483 publications

References 362 publications

The Blending of Poly(glycolic acid) with Polycaprolactone and Poly(l-lactide): Promising Combinations

The Blending of Poly(glycolic acid) with Polycaprolactone and Poly(l-lactide): Promising Combinations

Development of sedimentation resistant water-acrylic titanium dioxide dispersions

New Circular Challenges in the Development of Take-Away Food Packaging in the COVID-19 Period

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