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PREPARASI DAN KARAKTERISASI NANO KOMPOSIT KITOSAN-SILIKA DAN KITOSAN-SILIKA TITANIA (Preparation and Characterisation of Chitosan-Silica and Chitosan Silica Titania Nano Composites)

https://doi.org/10.22146/jml.18452

Dina Kartika Maharani(1*), Sari Edi Cahyaningrum(2), Amaria Amaria(3), Rusmini Rusmini(4)

(1) Jurusan Kimia, FMIPA, Universitas Negeri Surabaya
(2) Jurusan Kimia, FMIPA, Universitas Negeri Surabaya
(3) Jurusan Kimia, FMIPA, Universitas Negeri Surabaya
(4) Jurusan Kimia, FMIPA, Universitas Negeri Surabaya
(*) Corresponding Author

Abstract


ABSTRAK

Telah dibuat komposit kitosan silika dan kitosan silika titania dari larutan kitosan dan sol silika serta sol silika titania untuk aplikasi bahan antibakteri. Kitosan dibuat melalui proses deproteinasi, demineralisasi dan deasetilasi kitin dari cangkang kepiting. Sol silika dan silika titania dibuat dengan metode sol-gel. Komposit kitosan silika dan kitosan silika titania dikarakterisasi dengan analisis spektrofotometri infra merah dan difraksi sinar-X. Hasil analisis spektrofotometri infra merah menunjukkan bahwa telah terjadi interaksi antara silika dan titania dengan kitosan. Kristalinitas komposit kitosan silika titania lebih rendah dibandingkan dengan kitosan silika maupun kitosan sendiri. Hal ini menandakan bahwa interaksi antara partikel silika dan titania meningkatkan ketidakteraturan struktur kitosan.


ABSTRACT

Chitosan-silica and chitosan-silica titania composites have been prepared by mixing chitosan solutions with silca sol and silica titania sol for antibacterial application. Chitosan were prepared by deproteination, demineralisation and deasetilation of chitin from Crab shells. The silica sol and silica titania sol were prepared by sol-gel method. The composites were characterized using Infra Red spectrophotometry and X-ray Diffraction methods. The  Infra Red study of the composites showed that there is interaction between silica and titania with chitosan. The crystallinity of chitosan silica titania and chitosan-silica was decreased, compared with chitosan, that is showed the increasing of stucture dissorder of composites material.



Keywords


kitosan; komposit; silika; titania




DOI: https://doi.org/10.22146/jml.18452

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