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All Journal GRADIEN IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Jurnal Kimia Riset Science and Technology Indonesia Abdimasku : Jurnal Pengabdian Masyarakat Jurnal Pharmacopoeia Rafflesia Journal of Natural and Applied Sciences (RJNAS)
Irfan Gustian
Department of Chemistry-Faculty of Mathematics and Natural Sciences, Universitas Bengkulu
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences

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Modified Polystyrene Waste as Cation Exchange Material and Its Characterization Nendo, Felicia Febyola; Sutanto, Teja Dwi; Banon, Charles; Angasa, Eka; Gustian, Irfan
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 11, No 1 (2026): February 2026
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v11.i1.67

Abstract

Modification of polystyrene (PS) waste into sulfonated polystyrene (PSS) as cation exchange material and its characterization has been carried out, the polystyrene waste used is styrofoam from air conditioner packaging. Modification is carried out through the sulfonation process of styrofoam using acetyl sulfate as a sulfonating agent in tetrahydrofuran (THF) solution. Sulfonation is carried out at a temperature of 40 °C for 3.5 hours under nitrogen gas flow. The modified product is then characterized using FTIR, SEM, and testing the degree of sulfonation, water absorption capacity, and cation exchange capacity (CEC). The results show that modification has occurred in the presence of a sulfonate group (–SO₃H) which is characterized by the appearance of characteristic peaks of 1033 cm⁻¹, 1162 cm⁻¹ and 3329 cm⁻¹ in the FTIR spectrum and SEM results show that the PS structure which is not rough and becomes a rougher and non-uniform structure after sulfonation. The degree of sulfonation obtained reached 58%, the maximum water absorption achieved was 39% after soaking for 72 hours, and the highest measured cation exchange capacity was 1.87 meq/g in 1.5 N NaCl solution. These results indicate that styrofoam waste has the potential to be used as a basic material for efficient and environmentally friendly cation exchange resins.Keywords: Polystyrene, Sulfonation, Acetyl sulfate, Cation exchange capacity, Activation energy
Co-Authors Agus Martono Hadi Putranto Agus Sudaryono Avidlyandi, Avidlyandi Charles Banon Dwita Oktiarni Eka Angasa Evi Maryanti Gaol, Amelia Debora Lumban Hardiansyah, Yopan Harianti Putri, Yona Heryanti, Putri Juliari Kusnanda, Arif Khafit Wiradimafan Khairani, Nurliza Kurniawan, Affifa Fitri Mega Elfia Morina Adfa Nendo, Felicia Febyola Nurdiana Nurdiana Oktarini, Dwita Rahmawati, Reza SEPTI WULANDARI Setianingrum, Siti Ilsah Teja Dwi Sutanto Totok E. Suharto Totok Eka Suharto Tri Widayanti Triananda, Juwita Yuliah, Maya