The impact of eco-friendly chemical incorporation on the thermal oxidation process of flax fiber prior to carbonization and activation

Rahman M. M., KARACAN İ.

JOURNAL OF MATERIALS SCIENCE, cilt.57, sa.3, ss.2318-2333, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 57 Sayı: 3
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1007/s10853-021-06686-4
  • Dergi Adı: JOURNAL OF MATERIALS SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Chimica, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Public Affairs Index, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.2318-2333
  • Erciyes Üniversitesi Adresli: Evet

Özet

The oxidative thermal stability of plant-based microcrystalline flax fiber was developed by incorporating diammonium phosphate (DAP), boric acid, and urea (in brief DAP-BAU) followed by a multistep thermal oxidation process. By utilizing a set of measurements, including X-ray diffraction, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and infrared (IR) spectroscopy analysis, the impact of DAP-BAU inclusion on the thermal stability of flax fibers was studied. The findings of IR spectra and X-ray diffraction analysis revealed that the dehydrogenation and dehydration processes cause a progressive and steady loss of inter- and intramolecular H-bondings. Infrared spectra also showed the development of C = C double bonds associated with the crosslinked ladder structure formation. DSC and TGA findings revealed that DAP-BAU incorporation boosted thermal stability by generating ladder-like structure formation and restricted the development of volatile by-products by inhibiting the fundamental hydroxyl groups with increasing oxidation time. The overall findings of this study confirm that DAP-BAU incorporated and 125 min stabilized (at 245 degrees C) flax fibers attain complete thermal stability and are ready for utilizing in the subsequent carbonization and activation stages in activated carbon fiber manufacturing.