PVP Based Materials: Biodegradation in Different Environments

Vaňharová, Ludmila; Julinová, Markéta; Slavík, Roman

doi:10.1515/eces-2017-0021

Cited by 11 publications

(12 citation statements)

References 22 publications

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“…These methods mainly include visual analysis, mass loss, and spectroscopy, often used concomitantly, and sometimes partially or totally following the abovementioned standards. For example, Apinya et al (2015) and Vanharova et al (2017) measured the CO2 evolved from biodegradable plastic samples based on international standards (ISO 17556, 2012 and ASTM international, 2012, respectively) together with measuring film mass loss and conducting spectroscopy and electron microscopy observations. In this review, the estimation of film biodegradation carried out with visual analysis, mass loss, and spectroscopy are defined as 'indirect methods'.…”

Section: Accepted Papermentioning

confidence: 99%

“…Some of the selected papers (12/80) used also spectroscopy to assess the biodegradation of polymers, although it was always used in combination with other techniques such as respirometers (CO2 evolution) and visual analysis (e.g., Feuilloley et al, 2005;Vanharova et al, 2017). Spectroscopy detects changes in the polymer spectrum after polymer abiotic or biotic degradation.…”

Section: Spectroscopymentioning

confidence: 99%

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Evaluation of the mulch films biodegradation in soil: a methodological review

et al. 2021

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Plastic mulch films are widely used in agriculture, but most are not biodegradable in soil. Biodegradable mulch films are blends of different polymers whose composition-ratios vary notably from one product to another. Their degradation rates vary greatly according to the physio-chemical characteristics of the product and according to the properties of the soil and its microbial activity. The objective of this review is to provide an overview of the methods used to estimate the biodegradation performances of biodegradable plastics in the soil. In line with this objective, 80 papers were selected and systematically analyzed to extract information on the characteristics of the soil used in the experiments, the type of polymer analyzed, and the methods used to estimate biodegradation in soil environment. Our systematic analysis showed that studies were carried out under both laboratory-controlled and open-field conditions, with different approaches involving visual analysis, mass loss measurements, spectroscopy, and CO2 measurements. A linear estimation of biodegradation performance for four of the most common biodegradable polymers (i.e., polybutylene succinate, polybutylene succinate-co-adipate, polylactic acid, and polybutylene adipate-co-terephthalate), either pure or blended, showed a very wide range of results that appear only partially comparable. Many of the analyzed papers did not report soil characteristics at all, despite soil being one of the most important factors in the biodegradation process. Although methodologies for estimating biodegradation are well developed, at least under laboratory-controlled conditions, there is a need for a shared methodology to make results comparable among different experiments. Within such a shared methodology, visual analysis or mass loss measurements, despite not being able to scientifically prove the biodegradation of polymers, should not be discarded a priori as they might be useful indicators especially for open field experiments. When using indirect biodegradation indicators such as visual analysis or mass loss, it is necessary to couple them with CO2 measurements or to use materials whose biodegradability in the soil environment has already been tested.

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Section: Accepted Papermentioning

confidence: 99%

Section: Spectroscopymentioning

confidence: 99%

Evaluation of the mulch films biodegradation in soil: a methodological review

et al. 2021

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“…As the first step of hierarchy ductile LDPE was blended with brittle PVP. [19,34] For the second step of hierarchy, PVP composites were introduced in LDPE. Nano-scaled Halloysite clay and micro-scaled spherical Silica particles were utilized as additives in aforementioned PVP composites.…”

Section: Introductionmentioning

confidence: 99%

Design and fabrication of polymer micro/nano composites with two‐level mechanical reinforcing procedure

et al. 2022

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“…Nevertheless, some studies have shown that the structurally similar soluble PVP is recalcitrant, showing no biodegradation and therefore persisting in the environment. 15 At current usage values a disposal of 20 000 tons in 20 years are expected. These values can be underestimated 16 as there is presently a tendency to increase the PVPP use to replace casein/potassium caseinate 14 in white wine fining.…”

Section: ■ Introductionmentioning

confidence: 99%

Holistic and Sustainable Approach for Recycling and Valorization of Polyvinylpolypyrrolidone Used in Wine Fining

Ferreira

Alves

Filipe-Ribeiro

et al. 2018

ACS Sustainable Chem. Eng.

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Polyvinylpolypyrrolidone (PVPP) is a synthetic water-insoluble polymer widely used as fining agent in the wine industry for removing low-molecular-weight phenolics. Used PVPP, estimated in 2014 of 1037 tons, ends up in the municipal wastewater treatment plants with a detrimental environmental impact. Recycling of PVPP for obtaining fully reusable PVPP and wine phenolic concentrates for the food, cosmetic, and pharmaceutical industries would increase the sustainability of its use. An ammoniacal solution of ethanol allows one to desorb with high recoveries (average 73%) the PVPP adsorbed phenolics with yields ranging from 2.82 to 10.80 g/kg of wet PVPP, depending on the wine. Extracts were nearly pure concerning the phenolics abundance (>89%), without need of further purification. The performance of the recycled PVPP for white wine fining was not significantly different from that of the new PVPP, which can be recycled at least four times without loss of fining performance and allow a good recovery of adsorbed phenolics to be maintained. Results obtained in this work show that by using a simple, cheap, and eco-friendly recycling strategy, it is possible to reuse PVPP for wine fining, providing a cleaner winemaking process and additionally obtain wine phenolic concentrates with high purity, antioxidant, and bioactivity, valuable for other industries.

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PVP Based Materials: Biodegradation in Different Environments

Cited by 11 publications

References 22 publications

Evaluation of the mulch films biodegradation in soil: a methodological review

Evaluation of the mulch films biodegradation in soil: a methodological review

Design and fabrication of polymer micro/nano composites with two‐level mechanical reinforcing procedure

Holistic and Sustainable Approach for Recycling and Valorization of Polyvinylpolypyrrolidone Used in Wine Fining

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