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Porous slow release silicate-phosphate glasses synthesized by polymer-derived ceramics method appropriate for plants nourishment
, Article Iranian Journal of Materials Science and Engineering ; Volume 18, Issue 1 , 2021 , Pages 80-90 ; 17350808 (ISSN) ; Abdollahi, S ; Khalilifard, R ; Madaah Hosseini, H. R ; Sharif University of Technology
Iran University of Science and Technology
2021
Abstract
As an alternative to conventional fertilizers, e.g. NPK (the Nitrogen-Phosphorous-Potassium-containing chemical fertilizers) which release their nutrients in a short time glass fertilizers are ideal as they release macro-and micronutrients for crops and plant nourishment more gradually. Also, despite conventional ones, they have no ground-water pollution. In the present study, glass fertilizers were synthesized via polymer-derived ceramics (PDC) method. Despite the melt-casting procedure, PDC needs lower temperatures in heat treatment. The precursors consist of poly-siloxane and active fillers. Thus, thanks to gaseous release during heat treatment of the present active fillers, i.e. Ca(OH)2,...