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Related Concept Videos

Types of Step-Growth Polymers: Polyesters01:20

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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
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Assessing Label Stability in Oligopeptide-Modified Polymer Filament for Advanced Materials: Ultraviolet Exposure and

Joanna Rydz1, Khadar Duale1, Marta Musioł1

  • 1Centre of Polymer and Carbon Materials Polish Academy of Sciences, M. Curie-Skłodowskiej 34, Zabrze 41-819, Poland.

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Summary
This summary is machine-generated.

Triglycine oligopeptide serves as a green marker in 3D-printed PBAT/PLA for enhanced traceability. This sustainable approach ensures material identification and degradation monitoring, even after UV exposure and composting.

Keywords:
UV irradiationaerobic compostinganaerobic digestionfilamentlabelingoligopeptidepoly(1,4-butylene adipate-co-1,4-butylene terephthalate)polylactide

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Green Chemistry

Background:

  • The increasing use of biodegradable polymers like PBAT/PLA necessitates methods for tracking material origin and degradation.
  • Current traceability methods lack integration with the lifecycle assessment of these sustainable materials.
  • Developing green molecular markers is crucial for enhancing the circular economy of polymers.

Purpose of the Study:

  • To integrate triglycine, a green oligopeptide, as a molecular marker in 3D-printed PBAT/PLA specimens.
  • To enhance the traceability of biodegradable polymers through UV exposure and various degradation conditions.
  • To assess the stability and retrievability of information encoded by the oligopeptide marker.

Main Methods:

  • 3D printing of PBAT/PLA specimens with triglycine at different temperatures (155 °C and 190 °C).
  • Exposure of specimens to UV irradiation, aerobic composting, and anaerobic digestion.
  • Information retrieval using Electrospray Ionization/Trapped Ion Mobility Spectrometry-Quadrupole Time-of-Flight (ESI/TIMS-Q-TOF) mass spectrometry.
  • Cytotoxicity studies to evaluate potential hazards.

Main Results:

  • The triglycine oligopeptide demonstrated good stability, allowing effective information retrieval after UV exposure.
  • UV irradiation altered PBAT/PLA properties, affecting crystallization and melting temperatures, and inducing self-chain/cross-linking.
  • Specimens printed at higher temperatures (190 °C) exhibited faster degradation rates due to increased porosity and water permeability compared to those printed at lower temperatures (155 °C).

Conclusions:

  • Triglycine is a viable green molecular marker for enhancing the traceability of 3D-printed PBAT/PLA.
  • The marker system effectively retains information through environmental stressors like UV exposure.
  • Printing temperature significantly influences the degradation rate of PBAT/PLA, with higher temperatures leading to faster degradation.