Differences in the Plastispheres of Biodegradable and Non-biodegradable Plastics: A Mini Review

Peng, Chu; Wang, Jiao; Liu, Xianhua; Wang, Lei

doi:10.3389/fmicb.2022.849147

Cited by 29 publications

(11 citation statements)

References 62 publications

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“…Furthermore, the abundance of Streptomyces , members of which are known as polyethylene degraders [ 66 , 67 ], was lower in soil exposed to oxo-LDPE than in control soil, albeit that their abundance continued to increase over time in both treatments. To initiate degradation, bacteria first need to colonize the surface of plastic by forming a biofilm layer known as “plastisphere” [ 68 , 69 ]. The fact that the Streptomyces abundance was increasing over time in soil indicates that the bacteria, and perhaps other bacterial groups, may require longer than 120 days to establish succession on the surface of plastic and catabolize the material.…”

Section: Resultsmentioning

confidence: 99%

Bacterial dynamics during the burial of starch-based bioplastic and oxo-low-density-polyethylene in compost soil

et al. 2022

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Background Plastic waste accumulation is one of the main ecological concerns in the past decades. A new generation of plastics that are easier to degrade in the environment compared to conventional plastics, such as starch-based bioplastics and oxo-biodegradable plastics, is perceived as a solution to this issue. However, the fate of these materials in the environment are unclear, and less is known about how their presence affect the microorganisms that may play a role in their biodegradation. In this study, we monitored the dynamics of bacterial community in soil upon introduction of commercial carrier bags claimed as biodegradable: cassava starch-based bioplastic and oxo-low-density polyethylene (oxo-LDPE). Each type of plastic bag was buried separately in compost soil and incubated for 30, 60, 90, and 120 days. Following incubation, soil pH and temperature as well as the weight of remaining plastics were measured. Bacterial diversity in soil attached to the surface of remaining plastics was analyzed using Illumina high-throughput sequencing of the V3-V4 region of 16SrRNA gene. Results After 120 days, the starch-based bioplastic weight has decreased by 74%, while the oxo-LDPE remained intact with only 3% weight reduction. The bacterial composition in soil fluctuated over time with or without the introduction of either type of plastic. While major bacterial phyla remained similar for all treatment in this study, different types of plastics led to different soil bacterial community structure. None of these bacteria were abundant continuously, but rather they emerged at specific time points. The introduction of plastics into soil increased not only the population of bacteria known for their ability to directly utilize plastic component for their growth, but also the abundance of those that may interact with direct degraders. Bacterial groups that are involved in nitrogen cycling also arose throughout burial. Conclusions The introduction of starch-based bioplastic and oxo-LDPE led to contrasting shift in soil bacterial population overtime, which may determine their fate in the environment.

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Section: Resultsmentioning

confidence: 99%

Bacterial dynamics during the burial of starch-based bioplastic and oxo-low-density-polyethylene in compost soil

et al. 2022

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“…Biodegradable plastics refer to polymers that exhibit mechanical properties adequate for practical use, and remain stable throughout their shelf life, yet can eventually decompose into environmentally benign constituents upon disposal. [112][113][114][115][116][117] Currently, the adoption of biodegradable plastics as a desirable substitute for commonly utilized polyethylene is impeded by their elevated cost, thereby hindering their widespread implementation. To solve this problem, the service life of biodegradable plastics can be prolonged effectively by imparting healing ability to through CDC technology, thus creating huge economic benefits.…”

Section: Biodegradable Plasticsmentioning

confidence: 99%

High‐performance healable plastics: Focusing topological structure design based on constitutional dynamic chemistry

Liu,

Wang,

et al. 2023

EcoMat

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Over the past three decades, significant efforts have been dedicated to developing polymeric materials with exciting healable ability; however, stiff and healable plastics with high glass transition temperatures (Tg) have received relatively less attention compared to their soft counterparts such as gels and elastomers due to the inherent trade‐off between mechanical robustness and dynamics. High‐performance plastics are irreplaceable in the fields of engineering and industry, making it a challenging yet urgent task to confer them with desired healable properties whilst maintaining high mechanical strength. In this review, we first present recent advances in the field of high‐performance healable plastics based on constitutional dynamic chemistry, from the perspective of different topological structures including linear‐, branched‐ and network types. Meanwhile, we also elaborate on various toughening strategies for existing healable plastics, mainly centered around molecular to micrometer scale modifications. Moreover, we also provide a detailed exposition of previous reports on the autonomously room‐temperature self‐healing plastics, which represent a groundbreaking development in the realm of advanced healable plastics. Eventually, we emphasize diverse functionalized healable plastics to illustrate their potential for practical implementation, and propose an outlook on the future development of healable plastics.image

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“…Biodegradation is an advantage of PPC [ 61 ]. There are various types of microorganisms and biodegradable flora in the soil, and when PPC or modified PPC is placed directly in the soil environment, microorganisms start to erode from its surface, which leads to degradation by splitting, oxidation and chain breaking [ 62 ]. A degradation schematic is shown in Figure 6 .…”

Section: Polypropylene Carbonatementioning

confidence: 99%

Research and Application of Polypropylene Carbonate Composite Materials: A Review

Meng

Zhang

et al. 2022

Polymers

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The greenhouse effect and plastic pollution caused by the accumulation of plastics have led to a global concern for environmental protection, as well as the development and application of biodegradable materials. Polypropylene carbonate (PPC) is a biodegradable polymer with the function of “carbon sequestration”, which has the potential to mitigate the greenhouse effect and the plastic crisis. It has the advantages of good ductility, oxygen barrier and biocompatibility. However, the mechanical and thermal properties of PPC are poor, especially the low thermal degradation temperature, which limits its industrial use. In order to overcome this problem, PPC can be modified using environmentally friendly materials, which can also reduce the cost of PPC-based products to a certain extent and enhance their competitiveness in terms of improving their mechanical and thermal properties. In this paper, we present different perspectives on the synthesis, properties, degradation, modification and post-modification applications of PPC. The modification part mainly introduces the influence of inorganic materials, natural polymer materials and degradable polymers on the performance of PPC. It is hoped that this work will serve as a reference for the early promotion of PPC.

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Differences in the Plastispheres of Biodegradable and Non-biodegradable Plastics: A Mini Review

Cited by 29 publications

References 62 publications

Bacterial dynamics during the burial of starch-based bioplastic and oxo-low-density-polyethylene in compost soil

Bacterial dynamics during the burial of starch-based bioplastic and oxo-low-density-polyethylene in compost soil

High‐performance healable plastics: Focusing topological structure design based on constitutional dynamic chemistry

Research and Application of Polypropylene Carbonate Composite Materials: A Review

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