PENGARUH BLEACHING DAN PEWARNAAN TERHADAP KARAKTER SERBUK SABUT KELAPA SEBAGAI BAHAN BAKU COCODUSTFOAM
Styrofoam has been non degreadable material. When it�s been used as raw material of antishock packing made the problem for environment. It�s meant to be a replacement for styrofoam and more degreadable. Cocodust is more degreadable due naturally than synthesized polymerization of styrofoam. Coco...
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| Format: | Thesis |
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[Yogyakarta] : Universitas Gadjah Mada
2011
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| Summary: | Styrofoam has been non degreadable material. When it�s been used as raw
material of antishock packing made the problem for environment. It�s meant to be a
replacement for styrofoam and more degreadable. Cocodust is more degreadable
due naturally than synthesized polymerization of styrofoam. Cocodust has been
preparated for electronic and glassware tools. Cocodust could be modificated by
bleaching and dyeing. The result shows that bleaching agent can give lighten
brightness of cocodust and the high concentrations can reduce the aggregate size
but the kind of bleaching agent can not effect on the characteristics of cocodust, so
the optimal concentration needed to be exploited so that it can used for raw
materials cocodustfoam. The result of bleaching cocodust have been treated with
dyeing. The result of dyeing obtained that the optimal effect of natural dyes
concentration on absorbance. The kind of natural dyes could not effect on the
absorbance of dyes..
The concentration of bleaching agent that does not degrade the cocodust
aggregate maximum of 10% (w/v) while the optimal concentration of natural dyes
in the dyeing process with anthocyanin at 2.45% |
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