KAJIAN SINTESIS FILM KOMPOSIT MAGNETIK BERBAHAN DASAR LEMPUNG TERAKTIVASI BASA

BENNY WAHYUDIANTO, Dr. Yateman Arryanto; Dr. Sutarno, M. Si

2015 | Skripsi | S1 KIMIA

Sintesis komposit PVA-lempung-Fe3O4 dengan bahan dasar lempung alam dan teraktivasi basa telah dilakukan. Sintesis dilakukan dengan mencampurkan larutan PVA dan suspensi lempung alam atau lempung alam teraktivasi basa dan penambahan prekursor besi. Dalam penelitian ini dikaji pengaruh penambahan berat PVA terhadap sifat mekanik maupun kemagnetan Fe3O4. Bahan penyusun komposit seperti PVA dan lempung dikarakterisasi menggunakan FTIR untuk mengidentifikasi gugus fungsi dan XRD untuk mengidentifikasi kristalinitasnya. Penambahan berat PVA meningkatkan elongasi, namun menurunkan momen magnetik komposit. Aktivasi basa pada lempung alam menurunkan elongasi maupun momen magnetik komposit. Komposit PVA-lempung alam-Fe3O4 mengalami penurunan momen magnetik yang lebih besar dibandingkan komposit PVA-lempung alam teraktivasi basa-Fe3O4, akan tetapi peningkatan elongasi relatif sama.

The synthesis of PVA-clay-Fe3O4 composite from natural and base activated clay had been done. The composites were synthesized by mixing PVA solution and natural clay or base activation suspension and iron precursor. In this research the increasing weight effect of PVA in mechanical and magnetic properties were also studied. PVA and natural clay as raw materials had characterized by FTIR to identify functional groups and X-ray diffraction to identify material crystallinity. The increasing weight of PVA in the natural clay composites increased elongation and decreased magnetic moment. However, the elongation and magnetic moment in the base activated clay composites were lower than in the natural clay composites. The decreasing gradient of magnetic moment in the base activated clay composites were lower than in the natural clay composites. The increasing elongation in the base activated and natural clay composites were similar.

Kata Kunci : komposit, magnetik, PVA, Fe3O4