How to dry bleached cellulose to obtain white powder? what is the best temperature and time for oven drying without overdried some part?
Cellulose is resistent to tempeture below 360 °C, but I recommend you to dry it at 103°C for 24h. But it also depends on the application you want to used the fibers. Since heat might influence the fibers stretch. Maybe 50°C for 24h is better for your material for application where cellulose fiber must be kept similar to wood.
The cellulose pulp is fed into bleaching towers and bleaching chemicals are added; Oxygen, CO2, H2O2, NaOH or Ozone at temperatures up to +95°C. This will produce a whiter paper. This will result in a whiter paper.
J. Antonio Cortiñas Rodríguez we are currently doing our experiment for our alkaline treatment we use NaOH. We use 7% sodium hypochlorite as our bleaching agent, with a ratio of 1:25 (w/v) which are 15g of alkali-treated cellulose into 375ml 7% sodium hypochlorite at 70°C for 1 hour and 30 minutes with constant stirring. After, we vacuum filtered our bleached cellulose and it resulted to a viscous/paste-like texture. What can you recommend to do to obtain white powder/paper?
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