01627naa a2200217 a 450000100080000000500110000800800410001902200140006002400480007410000170012224501290013926000090026830000160027752009680029365300230126165300260128465300160131070000180132670000160134477300490136021570162024-01-15       2023    bl uuuu     u00u1 u    #d  a2637-61057 ahttps://doi.org/10.1021/acsapm.3c009882DOI1 aVALLE, S. F.  aUnveiling the Role of Polysulfide Matrices in Phosphate Diffusion for Controlled Release Fertilizers.h[electronic resource]  c2023  a6941–6949  aPhosphate rock and struvite (ST) dispersion in a polysulfide (PS) matrix offers a sustainable alternative for phosphorous (P) fertilization, as it can favor P dissolution and control its release, while also being a sulfur fertilizer. Herein, we discuss the PS permeability mechanism as well as the chemical and structural factors that affect P diffusion from PS composites. SEM and contact angle showed that P particles increased PS porosity and hydrophilicity, which favors P release. Within 7 days in soil, Fe-oxide papers revealed that the Pdiffusion diameter was only 0.3 cm for ST against up to 2.3 cm from the PS composite. In 28 days, available P in soil from the apatite increased from 6 to up to 79 mg/dm3 due to its dispersion in PS. In the adapted Ussing Chamber permeability test, PS displayed higher affinity toward anion permeability and a negligible cation diffusion, which might contribute to the gradual P release and higher availability in soil.  aControlled release  aInverse vulcanization  aPolysulfide1 aGIROTO. A. S.1 aRIBEIRO, C.  tACS Applied Polymer Materials, vol. 5, 2023.