A thermoanalytical insight into the composition of biodegradable polymers and commercial products by EGA-MS and Py-GC-MS

Falco, Francesca De; Nacci, Tommaso; Durndell, Lee J.; Thompson, Richard C.; Degano, Ilaria; Modugno, Francesca

doi:10.1016/j.jaap.2023.105937

Cited by 19 publications

(5 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first one, with a peak at approximately 300 °C, shows the same m / z signals observed in the mass spectrum of cPLA. The second peak, with maximum at 400 °C, shows signals at m / z 55, 71, 101, and 173, which can be ascribed to pyrolysis products of polybutylene succinate (PBS) . We can conclude that MB forks are composed of a mixture of PLA and PBS.…”

Section: Resultsmentioning

confidence: 90%

“…The second peak, with maximum at 400 °C, shows signals at m/z 55, 71, 101, and 173, which can be ascribed to pyrolysis products of polybutylene succinate (PBS). 26 We can conclude that MB forks are composed of a mixture of PLA and PBS. This was also confirmed by the Py-GC/MS profile, which shows the same peaks observed for cPLA, and an additional set of peaks that were ascribed to pyrolysis products of PBS.…”

Section: Samples Characterization Tablementioning

confidence: 75%

“…29 The mass spectrum shows main signals at m/z 60 and 73, which can be ascribed to fragments of levoglucosan. 25,26 Levoglucosan (#16, Table 2) was in fact also the main pyrolysis product of CELL detected in the Py-GC/MS profile. The other identified pyrolysis products are obtained from levoglucosan through secondary pyrolysis reactions, such as dehydration to give hydroxycyclopentenone (#7), hydroxycyclohexanone (#8), and dianhydroglucopyranose (#13).…”

Section: Samples Characterization Tablementioning

confidence: 97%

See 2 more Smart Citations

Fostering Bioplastics Circularity through Hydrothermal Treatments: Degradation Behavior and Products

Marchelli,

Mattonai,

Ferrentino

et al. 2024

ACS Sustainable Chem. Eng.

Self Cite

View full text Add to dashboard Cite

Bioplastics are produced in growing amounts due to their environmental benefits, but their disposal routes remain ambiguous. A hydrothermal treatment (HT) may be a sustainable process to improve the fate of waste bioplastics, but nearly no information is available on how they respond to it. In this work, HT of biodegradable bioplastics was performed, and the resulting solid and liquid products were characterized by elemental analysis, analytical pyrolysis-based techniques, ion chromatography, and gas chromatography coupled with mass spectrometry. We selected tableware based on polylactic acid (PLA), cellulose, and Mater-Bi (MB) and performed HT at 160−200 °C. MB was identified as a mixture of PLA and polybutylene succinate (PBS). Higher treatment temperatures enhanced the solubilization, which was very marked for PLA and MB and minor for cellulose. Characterization of the solid residues revealed that PLA and MB were quantitatively degraded at 180 °C and above, while cellulose could never be fully degraded. The analysis of the aqueous phases from the HT of PLA and MB revealed the presence of an array of oligomers of PLA and PBS at low temperatures and of the corresponding monomers (lactic acid and succinic acid) at high temperatures: their recovery could represent a way to give new life to waste bioplastics.

show abstract

Section: Resultsmentioning

confidence: 90%

Section: Samples Characterization Tablementioning

confidence: 75%

Section: Samples Characterization Tablementioning

confidence: 97%

See 1 more Smart Citation

Fostering Bioplastics Circularity through Hydrothermal Treatments: Degradation Behavior and Products

Marchelli,

Mattonai,

Ferrentino

et al. 2024

ACS Sustainable Chem. Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

“…68 EGA provides an indication of the various thermal fractions resident on the quartz fiber filter in preparation for setting pyrolysis conditions. An abundant MS response below 350 °C is indicative of airborne organic molecules and polymer additives 69,70 Performing an EGA to thermally characterize new samples will help establish whether the sample can be analyzed by flash pyrolysis (Single Shot−SS) because there is limited response below 350 °C, or if a thermal extraction clean-up is advised before pyrolysis (Double Shot− DS) because of abundant material in the early parts of the EGA. Both SS (Lab 2 and Office) and DS (Lab 1) were used in these experiments, based on the EGA results.…”

Section: ■ Introductionmentioning

confidence: 99%

Into the Nanograms─Sensitive Detection of Microplastics in Passively Sampled Indoor Air Using F-Splitless Pyrolysis Gas Chromatography Mass Spectrometry

Pipkin,

Sato,

Kumagai

et al. 2024

ACS EST Air

View full text Add to dashboard Cite

The presence in the atmosphere of airborne plastic, referred to as microplastic, results from the large quantities of plastic waste produced by humans. Microplastics can have an impact on human health. In this study, we investigated the analysis of indoor airborne microplastics by pyrolysis-gas chromatography/ mass spectrometry (Py-GC/MS). Py-GC/MS can be used to identify and quantify various types of microplastics. Indoor air was passively sampled using quartz fiber filters. In one instance, active sampling was used for comparative purposes. Sample preparation was limited and consisted only of cryomilling the quartz filters used for sampling to ensure homogeneity. F-Splitless pyrolysis, which is accomplished by forcibly redirecting flows, was used to transfer all the pyrolyzates of the microplastics to the GC/MS system. The results demonstrate that F-Splitless Py-GC/MS can be used to identify and quantify microplastics at the nanogram level. This method enables the rapid characterization and quantitation of microplastics in particulate matter (PM) air filters with minimal sample preparation, direct measurement of the sampling media, and nanogram-level sensitivity, thereby, allowing researchers to ascertain the magnitude of the microplastic threat in environmental air.

show abstract

“…[1][2][3] Bone tissue engineering scaffolds have been developed with rising demands on biomaterials in terms of mechanical properties, bioactivity, and biodegradability. Up to now, a variety of scaffolds biomaterials have been developed, [4][5][6][7] including bioactive ceramics (e.g., MAO, [8] HA, [9][10][11] ), biodegradable polymers (e.g., PLA, [12] BDSPs [13] ), and biodegradable metals (e.g., Mg, [14][15][16] Zn, [17] Ti [18,19] ). It is worth noting that Mg alloys have attracted extensive attention owing to special features in mechanical properties [20,21] and biological functions, [22] such as the close elastic modulus and density with human cortical bone, [23,24] good biodegradability and biocompatibility.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mn Content on the Microstructure, Mechanical, and Corrosion Properties of Porous Mg–1Zn–1Ca Scaffolds

Li,

Qiu,

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

Porous Mg alloys scaffolds are considered as an attractive strategy for bone repair due to their good biodegradability, biocompatibility, and suitable mechanical properties. In this study, porous Mg‐1Zn‐1Ca‐xMn (x = 0, 0.2, 0.5, 0.8) scaffolds with cubic pore structure were prepared, and the size of main pore and interconnected pores of the scaffolds were predicted to be 355∽450 μm, and 30∽50 μm, respectively. Among the four scaffolds, Mg‐1Zn‐1Ca‐0.8Mn scaffold possessed good mechanical properties, with a maximum yield strength of 27.1 and an elastic modulus of 0.66 GPa. However, Mg‐1Zn‐1Ca‐0.5Mn scaffold exhibited the optimal corrosion resistance with a corrosion rate 1.02mm/y after 5 days immersion in Hank’s solution. This is mainly attributed to α‐Mn phase is uniformly distributed on the substrate and uniformly degraded.This article is protected by copyright. All rights reserved.

show abstract

A thermoanalytical insight into the composition of biodegradable polymers and commercial products by EGA-MS and Py-GC-MS

Cited by 19 publications

References 72 publications

Fostering Bioplastics Circularity through Hydrothermal Treatments: Degradation Behavior and Products

Fostering Bioplastics Circularity through Hydrothermal Treatments: Degradation Behavior and Products

Into the Nanograms─Sensitive Detection of Microplastics in Passively Sampled Indoor Air Using F-Splitless Pyrolysis Gas Chromatography Mass Spectrometry

Effect of Mn Content on the Microstructure, Mechanical, and Corrosion Properties of Porous Mg–1Zn–1Ca Scaffolds

Contact Info

Product

Resources

About