The Effect of Metal-ion Addition to Natural Dyes
Some plants contain well-known pigments that have been used as coloring agents in textile industry. However, the availability of natural dyes to give a color variation is very limited and considered as less practical. It is known that some metal ions can interact with plant's pigment and result...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/12541 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Some plants contain well-known pigments that have been used as coloring agents in textile industry. However, the availability of natural dyes to give a color variation is very limited and considered as less practical. It is known that some metal ions can interact with plant's pigment and resulting color changes. Here in this thesis, metal-ion addition effect to natural dyes was studied. Several metal ions were used (Al3+, Sn2+, Fe2+, Cu2+, and Cr3+) to observe their effect to several pigment in red spinach, noni root skin, onion skin, purple cabbage, and rosselle flower. The effects were visually observed and measured with spectrophotometric UV-Vis method. |
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