We are trying to carry out surface modification (using alkali treatment) on selected natural fibres for use in cement matrix composites. However, some of our team members proposed using demineralized water for the treatment process in place of the commonly used distilled water. Several literatures have reported the use of distilled water in this process but as of today (29th June, 2021) and as much as I know, I have not seen/read any literature suggesting the use of demineralized water for this particular process.
Dear TAIWO,
Demineralized water is free from ions but not from uncharged organic materials. So the use of demineralized water in chemical treatment of natural fibers may cause the dissolve and wash out of the fibers. So special care should be taken while treatment of the natural fibers with demineralized water.
I have used deionized water for natural fibers treatment and it works well. However it is recommended to use distilled water to prepare your standard alkaline solutions.
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