Waste PET-Derived Sustainable and Efficient Hydrogel for Removal of Fe3+

Bodur Y., OKTAY B.

Polymer Engineering and Science, cilt.65, sa.8, ss.4347-4358, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 65 Sayı: 8
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1002/pen.70003
  • Dergi Adı: Polymer Engineering and Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Applied Science & Technology Source, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.4347-4358
  • Anahtar Kelimeler: environmental application, hydrogel, metal adsorption, recycling, waste PET bottles
  • Marmara Üniversitesi Adresli: Evet

Özet

Plastic waste is one of the most crucial environmental problems facing our world. Although studies are conducted on various functional materials, hydrogel research on this subject is relatively rare. This study presents a method for the advanced recycling of waste polyethylene terephthalate (PET) bottles. Initially, a water-soluble oligomeric products are obtained through PET aminolysis using triethylenetetramine (TETA). Then, this oligomeric structure was cross-linked with polyethylene glycol diglycidyl ether (PEGDE) in an aqueous environment to form a 3D polymeric network. The obtained hydrogel has a rich amine group content, which makes it hydrophilic and suitable for use as an adsorbent. In particular, these groups can bind to the empty d-orbitals of transition metals via coordination bonds and trap the metal inside. TGA and DSC were used for thermal analysis of the hydrogel; FTIR and 1H NMR for structural characterization of the aminolyzed PET and hydrogel; and UV/Vis spectrophotometry for determining the Fe3+ ion concentration. At the maximum adsorption level, 1 g of the hydrogel adsorbed 124.66 mg of Fe3+ ions, corresponding to a 99.55% adsorption efficiency. This study offers a useful approach in terms of being both cost-effective and efficient for the problem of waste plastic and water pollution.