Sintesis Kopoli(Anetol-Stearil Akrilat-Divinilbenzena) sebagai Material Alternatif Adsorben

Desi Suci Handayani (Jurusan Kimia, FMIPA, Universitas Sebelas Maret Jalan Ir. Sutami 36 A, Kentingan, Surakarta, 57126, Indonesia)
Edi Pramono (Jurusan Kimia, FMIPA, Universitas Sebelas Maret Jalan Ir. Sutami 36 A, Kentingan, Surakarta, 57126, Indonesia)
Bagus Indra Suwaji (Jurusan Kimia, FMIPA, Universitas Sebelas Maret Jalan Ir. Sutami 36 A, Kentingan, Surakarta, 57126, Indonesia)

ALCHEMY Jurnal Penelitian Kimia
Vol 20, No 1 (2024): March

Sintesis kopoli(Anetol-Stearil Akrilat-Divinilbenzena) atau KASA-DVB berhasil dilakukan melalui reaksi kopolimerisasi kationik menggunakan inisiator BF3O(C2H5)2 dan Stearil Akrilat (SA) dengan variasi 2, 4, dan 6 (b/b), pada jumlah anetol dan DVB tetap. Produk yang dihasilkan dikarakterisasi gugus fungsi, struktur, morfologi, viskositas intrinsik dan sifat termalnya berturut-turut menggunakan spektroskopi Fourier-transform infrared (FT-IR), proton nuclear magnetic resonance (1H-NMR), scanning electron microscopy dengan energy dispersive X-ray (SEM-EDX), viskometer Ostwald dan analisis thermogravimetric-differential thermal-differential scanning calorimetry (TG/DTA-DSC). Uji kinerja adsorpsi senyawa dilakukan dengan metode batch dan konsentrasi adsorbat ditentukan dengan Spektrofotometer UV-Vis. Data FT-IR menunjukkan hilangnya serapan gugus alil dan vinil sementara data 1H-NMR menunjukkan hilangnya H-alil dan H-vinil yang mengindikasikan KASA-DVB berhasil disintesis. Penambahan konsentrasi SA dapat meningkatkan nilai viskositas intrinsik. Analisis morfologi KASA-DVB diperoleh padatan dengan permukaan yang relatif kasar dan jumlah rongga semakin sedikit. Analisis termogram TG/DTA-DSC menunjukkan penurunan sifat termal yaitu diperoleh titik inisiasi degradasi massa yang lebih rendah. Nilai kapasitas adsorpsi tertinggi diperoleh dari hasil uji kinerja adsorpsi pada waktu kontak ke-60 menit dan variasi berat SA 2%. Berdasarkan data kinerja adsorpsi, menunjukkan bahwa KASA-DVB memiliki potensi sebagai adsorben. Uji adsorpsi menunjukkan kapasitas adsorpsi terbesar adalah 23,22 (mg/g) pada KASA-DVB 2%. Synthesis of Copoly(Anethol-Styryl Acrylate-Divinylbenzene) as an Alternative Adsorbent Material. Synthesis of copoly(Anethole-Stearyl Acrylate-Divinylbenzene) or KASA-DVB was successfully carried out by a cationic copolymerization reaction using BF3O(C2H5)2 initiator and various concentrations of Stearyl Acrylate (SA) are 2, 4, and 6 wt. The resulting products were characterized by functional groups, structure, morphology, intrinsic viscosity, and thermal properties using Fourier-transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance spectroscopy (1H-NMR), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), Ostwald Viscometer, and thermogravimetric-differential thermal-differential scanning calorimetry analysis (TG/DTA-DSC), respectively. The adsorption performance was analyzed using the batch method, and the adsorbate concentration was determined using a UV-Vis spectrophotometer. The FT-IR data showed loss of allyl and vinyl groups absorption, while 1H-NMR data showed loss of H-allyl and H-vinyl, indicating that KASA-DVB was successfully synthesized. The increase in SA concentration can increase the intrinsic viscosity value. Morphological analysis of KASA-DVB obtained solid materials with a relatively rough surface and fewer cavities. Thermogram analysis of TG/DTA-DSC showed a decrease in thermal properties, which was a lower mass degradation initiation point. The highest adsorption capacity was obtained from the adsorption performance with a contact time of 60 minutes and 2% SA weight variation. The adsorption performance data shows that KASA-DVB is potent as an adsorbent. The adsorption showed that the largest adsorption capacity was 23.22 (mg/g) on KASA-DVB 2%.