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All Journal VALENSI Molekul: Jurnal Ilmiah Kimia
Anna Rakhmawati
Yogyakarta State University
Chemical Engineering, Chemistry & Bioengineering Chemistry

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Uji Kinerja Fotodegradasi Kain Terlapisi Komposit Nanosized Chitosan/TiO2 Terhadap Zat Warna Rhodamine B Eli Rohaeti; Endang Widjajanti Laksono FX; Anna Rakhmawati
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 2, No. 1, Mei 2016
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (699.541 KB) | DOI: 10.15408/jkv.v2i1.3111

Abstract

The coating of nanosized Chitosan/TiO2 composit on cotton fabrics substrate and its performance for dye of Rhodamine B was studied. Nanosized Chitosan/TiO2 composit coated on cotton fabrics was done by dip-coating method through pad-dry-cure technic. Cotton fabric thats was coated by nanosized Chitosan/TiO2 composit was characterized by SEM, XRD, and FTIR. Photodegradation Performance test of cotton fabric coated Nanosized Chitosan/TiO2 composit for dye of Rhodamine B was done under UV ray and sun ray.  It was concluded that was cotton fabric coated nanosized Chitosan/TiO2 can decompose dye of Rhodamine B with UV ray more effective than sun ray. Keywords : Dip-coating, photodegradation, nanosized chitosan/TiO2, cotton fabric, rhodamine B DOI: http://dx.doi.org/10.15408/jkv.v2i1.3083
The Hydrophobicity and the Antibacterial Activity of Polyester Modified With Silver Nanoparticle and Hexadecyltrimethoxysilane Eli Rohaeti; Anna Rakhmawati
Molekul Vol 12, No 1 (2017)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (750.974 KB) | DOI: 10.20884/1.jm.2017.12.1.295

Abstract

The objective of this research were to study hydrophobicity and antibacterial activity of polyester fibers before and after modification by using silver nanoparticles as antibacterial agent and hexadecyltrimethoxysilane (HDTMS) as self cleaning agent. The research was conducted in stages, chemical preparation of silver nanoparticles, deposit of silver nanoparticles on polyester fiber, modification of polyester fiber through the addition HDTMS, and characterization. Modification of polyester fibers with silver nanoparticles and HDTMS was conducted through dipping method, followed by curing. Characterization was conducted by testing the contact angle and antibacterial activity against Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 35218. Silver nanoparticles has been prepared by adding sodium citrate and polyvinylalcohol as stabilizer. The addition of silver nanoparticles decreased hydrophobicity of polyester fibers without and with modification. Modification with HDTMS increased hydrophobicity of polyester fibers. Modification with silver nanoparticles and HDTMS increased antibacterial activity of polyester fabrics. Statistic analysis showed that there were significant differences in the antibacterial activity of polyester fibers against Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 35218
Co-Authors Eli Rohaeti Endang Widjajanti Laksono FX