Biodegradation studies of LDPE filled with biodegradable additives: Morphological changes. I

Contat‐Rodrigo, Laura; Ribes‐Greus, A.

doi:10.1002/app.10087

Cited by 45 publications

(31 citation statements)

References 29 publications

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“…25 This can also be attributed to higher branch content. 26 In the case of PA6, shown in Figure 8(b), the change in thermal stability due to the presence of ZnO particles is low (about 5 C). Temperature phase changes are sensitive to increase in macromolecules mobility induces by ZnO particles in PA6.…”

Section: Thermal Propertiesmentioning

confidence: 96%

Thermal and rheological characterization of antibacterial nanocomposites

Droval

Aranberri

Germán

et al. 2012

Journal of Thermoplastic Composite Materials

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In this study, the filler-matrix interactions are assessed in two nanocomposites having different antibacterial activity. The two polymers used as matrix are poly(amide) 6 (PA6) and low-density poly(ethylene) (LDPE). The filler, zinc oxide (ZnO) nanoparticles, with a content as low as 1 w/w% in the polymers showed great antibacterial activity against Escherichia coli and Staphylococcus aureus. However, the bacterial slaying capability of composites was found better when ZnO was dispersed in PA6, where the efficiency is similar to pure ZnO particles. The dispersion of ZnO and its interactions with the matrix have been investigated by means of scanning electron microscope, rheology, thermogravimetric analysis and differential scanning calorimeter. This study shows stronger interactions of ZnO particles with LDPE, which could have an effect on final antibacterial properties.

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Section: Thermal Propertiesmentioning

confidence: 96%

Thermal and rheological characterization of antibacterial nanocomposites

Droval

Aranberri

Germán

et al. 2012

Journal of Thermoplastic Composite Materials

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“…Polyethylene, due to its high hydrophobicity and long carbon chains, is very resistant to biodegradation [1],[2]. Under normal conditions, mineralization of this polymer takes more than 100 years [3].…”

Section: Introductionmentioning

confidence: 99%

“…These pro-oxidants are metal ions or oxides, such as titanium oxide, that catalyze photo- or thermo-oxidation of the polymer [1],[5]–[8]. During photo-degradation, also termed pro-oxidant photocatalytic oxidation, free radicals produced of the reactions catalized by pro-oxidant causes scission in the polymer chain [6]–[8], facilitating microbial degradation [4],[7].…”

Section: Introductionmentioning

confidence: 99%

Abiotic and Biotic Degradation of Oxo-Biodegradable Plastic Bags by Pleurotus ostreatus

et al. 2014

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In this study, we evaluated the growth of Pleurotus ostreatus PLO6 using oxo-biodegradable plastics as a carbon and energy source. Oxo-biodegradable polymers contain pro-oxidants that accelerate their physical and biological degradation. These polymers were developed to decrease the accumulation of plastic waste in landfills. To study the degradation of the plastic polymers, oxo-biodegradable plastic bags were exposed to sunlight for up to 120 days, and fragments of these bags were used as substrates for P. ostreatus. We observed that physical treatment alone was not sufficient to initiate degradation. Instead, mechanical modifications and reduced titanium oxide (TiO2) concentrations caused by sunlight exposure triggered microbial degradation. The low specificity of lignocellulolytic enzymes and presence of endomycotic nitrogen-fixing microorganisms were also contributing factors in this process.

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“…[3][4][5] Thermal analysis techniques represent a powerful tool to control and monitor the degradation evolution in polymers. [6][7][8] In this work, thermogravimetric experiments have been performed in order to characterize the effects of a degradation in soil test on the thermal stability and the thermal decomposition kinetics of an amorphous PLA.…”

Section: Introductionmentioning

confidence: 99%

A Thermogravimetric Approach to Study the Influence of a Biodegradation in Soil Test to a Poly(lactic acid)

Badía

Moriana

Santonja-Blasco

et al. 2008

Macromolecular Symposia

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Summary: An amorphous grade Poly (lactic acid) (PLA) was selected for an accelerated burial in soil test during 450 days. Thermogravimetric analyses were carried out to study the effects of degradation in soil on the thermal stability and the thermal decomposition kinetics. A single stage decomposition process is observed for all degradation times. It is shown that the thermal stability of PLA is slightly affected by degradation in soil. Concerning the study of the thermal decomposition kinetics, Criado master curves were plotted from experimental data to focus the study of the thermodegradation kinetic model.The kinetic methods proposed by Broido and Chang were used to calculate the apparent activation energies (Ea) of the degradation mechanism. These results were compared to the Ea values obtained by the method developed by Coats and Redfern in order to prove the applicability of the former methods to the kinetic study. As expected, non-linear tendency is found out for Ea variation along the degradation times, which can be explained as an evolution by stages.

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Biodegradation studies of LDPE filled with biodegradable additives: Morphological changes. I

Cited by 45 publications

References 29 publications

Thermal and rheological characterization of antibacterial nanocomposites

Thermal and rheological characterization of antibacterial nanocomposites

Abiotic and Biotic Degradation of Oxo-Biodegradable Plastic Bags by Pleurotus ostreatus

A Thermogravimetric Approach to Study the Influence of a Biodegradation in Soil Test to a Poly(lactic acid)

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