Fertilizer release is controlled by nonwoven materials coated with adjustable polylymer (ethylene alcohol)/ammonium sulfate

In a recent study, nonwoven fabrics were coated with two different ammonium sulfate fertilizers (27.75% and 55.50%) using two different poly (ethylene alcohol) types (high molecular weight and low molecular weight).
in order to study the effects of poly (ethylene alcohol) crosslinking on fertilizer release, dialdehyde (GA) crosslinkers are used in two different proportions (GA/PVOH ratio: 0.01 or 1). The concentration of 0.01GA is not sufficient for PVOH crosslinking, and with the increase of poly (ethylene alcohol) and dialdehyde load, the absorption capacity is reduced by

. The release of fertilizer is mainly influenced by molecular weight and the load of polyethylene alcohol and fertilizer.
Control fertilizer release
controlled fertilizer release can be achieved when unwoven fabrics are coated with a high molecular weight (ethylene alcohol) containing 55.50% ammonium sulfate fertilizer without dialdehyde.