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Related Concept Videos

Polymer Classification: Architecture01:14

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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.
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Multilevel structural polylactic acid fabrics for flame retardancy, durability, and electromagnetic interference

Cen Chu1, Yifei Gao1, Xiangyu Ma1

  • 1Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei 230009, China.

International Journal of Biological Macromolecules
|October 29, 2024
PubMed
Summary

This study developed durable, multifunctional polylactic acid (PLA) fabrics with enhanced flame retardancy and electromagnetic interference (EMI) shielding using bio-based materials and MXene. The treated fabrics offer excellent safety and performance for sustainable applications.

Keywords:
Electromagnetic interference shieldingFlame retardantPolylactic acid fabric

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Sustainable development requires materials with enhanced safety features like flame retardancy and electromagnetic interference (EMI) shielding.
  • Polylactic acid (PLA) fabrics offer a biodegradable base, but require functionalization for advanced applications.
  • Integrating bio-based flame retardants and conductive nanomaterials presents a promising approach for multifunctional textiles.

Purpose of the Study:

  • To develop multifunctional polylactic acid (PLA) fabrics with improved flame retardancy and electromagnetic interference (EMI) shielding.
  • To investigate the covalent integration of bio-based flame retardants and MXene conductive layers onto PLA fabrics.
  • To evaluate the durability and hydrophobic properties of the modified PLA fabrics.

Main Methods:

  • Utilized phytic acid (PA) and polyethylenimine (PEI) as bio-based flame retardants, crosslinked with 3-glycidyl oxy propyl trimethoxsilane (GPTMS).
  • Incorporated a conductive MXene layer covalently bonded to the flame retardants and PLA fabric.
  • Applied polydimethylsiloxane (PDMS) for hydrophobic treatment and conducted rigorous testing for flame retardancy, EMI shielding, and durability.

Main Results:

  • The PA-PEI-MXene-60 PLA fabric demonstrated exceptional flame retardancy with a high Limiting Oxygen Index (LOI) of 35.6% and significant reductions in peak heat release rate (pHRR) and total heat release (THR).
  • Achieved outstanding electromagnetic interference (EMI) shielding effectiveness of 54 dB.
  • The treated fabrics exhibited excellent hydrophobicity (water contact angle of 148.8°) and maintained high EMI shielding efficiency after repeated bending and abrasion tests, indicating superior durability.

Conclusions:

  • The developed multifunctional PLA fabrics offer a promising solution for safe, sustainable, and durable materials with combined flame-retardant and EMI shielding properties.
  • The covalent bonding strategy ensures the stability and effectiveness of the integrated flame retardants and MXene layer.
  • This research contributes significantly to the advancement of high-performance textiles for demanding applications.