Recycling of bioplastic waste: A review

Fredi, Giulia; Dorigato, Andrea

doi:10.1016/j.aiepr.2021.06.006

Cited by 82 publications

(75 citation statements)

References 118 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Its aptitude to be processed into continuous filaments and nonwovens is being exploited to produce biodegradable textiles for disposable medical and hygienic tissues, but also for technical applications in the filtration and agriculture fields [ 6 , 11 ]. However, the poor toughness, high hygroscopic nature, and high gas permeability of PLA restrict its industrial applications to rigid thermoformed packaging, whereas a wide application of PLA as flexible packaging and textile fibers is still limited [ 7 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Statistical Modeling and Optimization of the Drawing Process of Bioderived Polylactide/Poly(dodecylene furanoate) Wet-Spun Fibers

et al. 2022

Self Cite

View full text Add to dashboard Cite

Drawing is a well-established method to improve the mechanical properties of wet-spun fibers, as it orients the polymer chains, increases the chain density, and homogenizes the microstructure. This work aims to investigate how drawing variables, such as the draw ratio, drawing speed, and temperature affect the elastic modulus (E) and the strain at break (εB) of biobased wet-spun fibers constituted by neat polylactic acid (PLA) and a PLA/poly(dodecamethylene 2,5-furandicarboxylate) (PDoF) (80/20 wt/wt) blend. Drawing experiments were conducted with a design of experiment (DOE) approach following a 24 full factorial design. The results of the quasi-static tensile tests on the drawn fibers, analyzed by the analysis of variance (ANOVA) and modeled through the response surface methodology (RSM), highlight that the presence of PDoF significantly lowers E, which instead is maximized if the temperature and draw ratio are both low. On the other hand, εB is enhanced when the drawing is performed at a high temperature. Finally, a genetic algorithm was implemented to find the optimal combination of drawing parameters that maximize both E and εB. The resulting Pareto curve highlights that the temperature influences the mechanical results only for neat PLA fibers, as the stiffness increases by drawing at lower temperatures, while optimal Pareto points for PLA/PDoF fibers are mainly determined by the draw ratio and the draw rate.

show abstract

Section: Introductionmentioning

confidence: 99%

Statistical Modeling and Optimization of the Drawing Process of Bioderived Polylactide/Poly(dodecylene furanoate) Wet-Spun Fibers

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Most of these polymers are not biodegradable. Nevertheless, degradability can be achieved by integrating unstable bonds (e.g., amide, ester, or ether) [ 120 ]. Examples of biodegradable fossil-based plastics are poly(1,4-butylene adipate-co-1,4-butylene terephthalate) (PBAT) and polycaprolactone (PCL).…”

Section: New Generations Of Plasticsmentioning

confidence: 99%

“…It has excellent biocompatible properties that enable its use for medical applications. To enhance their properties, PCL and PBAT can be used in blends with biobased and biodegradable materials such as polylactic acid (PLA) and polyhydroxyalkanoates (PHAs), and polybutylene succinate (PBS) [ 120 ].…”

Section: New Generations Of Plasticsmentioning

confidence: 99%

“…Traditionally, the monomers were synthesized from fossil resources; however, butanediol can be prepared from renewable sources such as renewable biomass resources and succinic acid from sugar fermentation ( Table 2 ) [ 148 ]. Furthermore, PBS has good mechanical properties comparable to PE and PP, resulting in multiple applications for food packaging, shopping bags, agriculture mulch film, and hygiene products [ 120 ]. Nevertheless, the production cost is high, so future developments are needed to make it more economically viable [ 51 ].…”

Section: New Generations Of Plasticsmentioning

confidence: 99%

“…Polylactic acid (PLA) is an aliphatic polyester produced by chemical or biological methods from cellulosic biomass [ 120 ]. It is biodegradable, and its mechanical properties are equivalent to those of petroleum-based plastics such as PET and PS, in addition to properties such as biocompatibility, innocuity, and compostability.…”

Section: New Generations Of Plasticsmentioning

confidence: 99%

See 2 more Smart Citations

Towards a Circular Economy of Plastics: An Evaluation of the Systematic Transition to a New Generation of Bioplastics

et al. 2022

View full text Add to dashboard Cite

Plastics have become an essential part of the modern world thanks to their appealing physical and chemical properties as well as their low production cost. The most common type of polymers used for plastic account for 90% of the total production and are made from petroleum-based nonrenewable resources. Concerns over the sustainability of the current production model and the environmental implications of traditional plastics have fueled the demand for greener formulations and alternatives. In the last decade, new plastics manufactured from renewable sources and biological processes have emerged from research and have been established as a commercially viable solution with less adverse effects. Nevertheless, economic and legislative challenges for biobased plastics hinder their widespread implementation. This review summarizes the history of plastics over the last century, including the most relevant bioplastics and production methods, the environmental impact and mitigation of the adverse effects of conventional and emerging plastics, and the regulatory landscape that renewable and recyclable bioplastics face to reach a sustainable future.

show abstract