Bio-based additives for thermoplastics

Paoli, Marco-Aurélio De; Waldman, Walter R.

doi:10.1590/0104-1428.06318

Cited by 20 publications

(9 citation statements)

References 49 publications

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“…The increase in consumer demand for healthy and safe food has resulted in the development of a new food packaging approach [93]. The original food packaging concept started to expand in the second half of the 20th century when natural and artificial additives in the package system were increasingly used to provide packaging with novel functionalities to extend the food shelf-life [94]. In recent years, many studies concerning natural additives from natural resources (secondary compounds) for food packaging applications have increased [95,96].…”

Section: Secondary Compounds In Food Packagingmentioning

confidence: 99%

Edible Polymers and Secondary Bioactive Compounds for Food Packaging Applications: Antimicrobial, Mechanical, and Gas Barrier Properties

et al. 2022

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Edible polymers such as polysaccharides, proteins, and lipids are biodegradable and biocompatible materials applied as a thin layer to the surface of food or inside the package. They enhance food quality by prolonging its shelf-life and avoiding the deterioration phenomena caused by oxidation, humidity, and microbial activity. In order to improve the biopolymer performance, antimicrobial agents and plasticizers are also included in the formulation of the main compounds utilized for edible coating packages. Secondary natural compounds (SC) are molecules not essential for growth produced by some plants, fungi, and microorganisms. SC derived from plants and fungi have attracted much attention in the food packaging industry because of their natural antimicrobial and antioxidant activities and their effect on the biofilm’s mechanical properties. The antimicrobial and antioxidant activities inhibit pathogenic microorganism growth and protect food from oxidation. Furthermore, based on the biopolymer and SC used in the formulation, their specific mass ratio, the peculiar physical interaction occurring between their functional groups, and the experimental procedure adopted for edible coating preparation, the final properties as mechanical resistance and gas barrier properties can be opportunely modulated. This review summarizes the investigations on the antimicrobial, mechanical, and barrier properties of the secondary natural compounds employed in edible biopolymer-based systems used for food packaging materials.

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Section: Secondary Compounds In Food Packagingmentioning

confidence: 99%

Edible Polymers and Secondary Bioactive Compounds for Food Packaging Applications: Antimicrobial, Mechanical, and Gas Barrier Properties

et al. 2022

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“…More recently, there has been traction in the development of alternative additives that are either bio-based and/or biodegradable. However, due to limitations regarding marketability on the account of cost and availability, only a limited number of these products have been developed to pilot plant scale, and even less have reached the market [28]. One example that bucks the trend is the development and uptake of 'bioplasticizers' to replace phthalate-based plasticizers in the production of PVC (polyvinyl chloride; traditional thermoplastic) [28].…”

Section: Concerns From the Academic Communitymentioning

confidence: 99%

“…However, due to limitations regarding marketability on the account of cost and availability, only a limited number of these products have been developed to pilot plant scale, and even less have reached the market [28]. One example that bucks the trend is the development and uptake of 'bioplasticizers' to replace phthalate-based plasticizers in the production of PVC (polyvinyl chloride; traditional thermoplastic) [28]. Indeed, De Paoli and Waldmen (2019) envision a ban on petrol-based plasticizers and exclusive use of bio-based alternatives in the near future [28].…”

Section: Concerns From the Academic Communitymentioning

confidence: 99%

“…One example that bucks the trend is the development and uptake of 'bioplasticizers' to replace phthalate-based plasticizers in the production of PVC (polyvinyl chloride; traditional thermoplastic) [28]. Indeed, De Paoli and Waldmen (2019) envision a ban on petrol-based plasticizers and exclusive use of bio-based alternatives in the near future [28]. Furthermore, these 'bioplasticizers', originally developed for use by traditional plastics (in this case, PVC), are now being used as additives in the development of new BB-P/BD-P formulations [29].…”

Section: Concerns From the Academic Communitymentioning

confidence: 99%

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Addressing Stakeholder Concerns Regarding the Effective Use of Bio-Based and Biodegradable Plastics

et al. 2021

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Bio-based and biodegradable materials have the potential to replace traditional petroleum-based plastics across a range of products and contribute to a more circular economy. However, the uptake of these materials will not succeed unless consumers, manufacturers, and regulators are convinced of their efficacy. Investigating performance and safety concerns put forward by academic and non-academic communities, this paper assesses whether these concerns are being adequately addressed by current policy and regulation. In addition, measures to overcome significant concerns are developed through a series of stakeholder engagement events, informed by the Prospex-CQI-and STIR methodology. Discussions across the stakeholder engagement events have highlighted several concerns that create barriers to market up-take of bio-based and biodegradable plastic products, including the continued confusion regarding terminology and resultant communication, difficulties in navigating the plethora of documents related to safety, the appropriateness of safety documents when applied to new products, and the overall suitability and sustainability of such materials as an alternative to traditional plastics. To overcome these concerns, a series of recommendations for research, policy, and practice are made with respect to the following key areas of concern: regulation and legislative instruments, material quality and performance, market penetration and availability, waste management infrastructure, sourcing and supply chain, communication and information provision, and material health and safety.

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“…Common additives are antioxidants, flame retardants, lubricants, fungicides, UV stabilizers, and expanding agents, among others [69,70]. Fillers, whether in particle, e.g., carbon black, or fibrillar, e.g., glass fibers, form, typically aim to increase the mechanical strength and rigidity of plastics, as well as to allow their use under load and at higher temperatures; the most common reinforcing fillers are carbon black, carbon and glass fibers, mica, and aramids [71].…”

Section: Optimization Of the Properties Of Plasticsmentioning

confidence: 99%

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

et al. 2021

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Plastics are ubiquitous in our society and are used in many industries, such as packaging, electronics, the automotive industry, and medical and health sectors, and plastic waste is among the types of waste of higher environmental concern. The increase in the amount of plastic waste produced daily has increased environmental problems, such as pollution by micro-plastics, contamination of the food chain, biodiversity degradation and economic losses. The selective and efficient conversion of plastic waste for applications in environmental remediation, such as by obtaining composites, is a strategy of the scientific community for the recovery of plastic waste. The development of polymeric supports for efficient, sustainable, and low-cost heterogeneous catalysts for the treatment of organic/inorganic contaminants is highly desirable yet still a great challenge; this will be the main focus of this work. Common commercial polymers, like polystyrene, polypropylene, polyethylene therephthalate, polyethylene and polyvinyl chloride, are addressed herein, as are their main physicochemical properties, such as molecular mass, degree of crystallinity and others. Additionally, we discuss the environmental and health risks of plastic debris and the main recycling technologies as well as their issues and environmental impact. The use of nanomaterials raises concerns about toxicity and reinforces the need to apply supports; this means that the recycling of plastics in this way may tackle two issues. Finally, we dissert about the advances in turning plastic waste into support for nanocatalysts for environmental remediation, mainly metal and metal oxide nanoparticles.

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Bio-based additives for thermoplastics

Cited by 20 publications

References 49 publications

Edible Polymers and Secondary Bioactive Compounds for Food Packaging Applications: Antimicrobial, Mechanical, and Gas Barrier Properties

Edible Polymers and Secondary Bioactive Compounds for Food Packaging Applications: Antimicrobial, Mechanical, and Gas Barrier Properties

Addressing Stakeholder Concerns Regarding the Effective Use of Bio-Based and Biodegradable Plastics

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

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