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Preparation and Properties of Biodegradable Slow‐Release PAA Superabsorbent Matrixes for Phosphorus Fertilizers
Author(s) -
Tyliszczak B.,
Polaczek J.,
Pielichowski J.,
Pielichowski K.
Publication year - 2009
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200950534
Subject(s) - fertilizer , swelling , absorption of water , phosphorus , chemistry , superabsorbent polymer , acrylic acid , absorption capacity , water retention , nuclear chemistry , chemical engineering , polymer chemistry , materials science , organic chemistry , soil water , polymer , copolymer , composite material , environmental science , engineering , soil science
Biodegradable superabsorbent matrixes for a slow‐release fertilizer were prepared by using crosslinked acrylic acid and water‐soluble granular phosphorus fertilizer KH 2 PO 4 . The effects of the amount of crosslinker, initiator and phosphorus fertilizer concentration on water absorption were investigated and optimized. The products show excellent slow release and water‐retention capacity, being nontoxic in soil and environment‐friendly, and could be useful especially in agricultural and horticultural applications. The results showed that the hydrogel structure and swelling capacity was affected by various factors, such as concentration of crosslinker and initiator, as well as by the amount of KH 2 PO 4 .