Intramolecular and intermolecular crosslinked poly(vinyl alcohol)–borate complexes for the sustained release of fertilizers and enzymes

摘要: Therapeutic agents or agricultural fertilizers captured in polymer colloids (PCs) give rise to interesting applications, which are typically related sustained release. We synthesized crosslinked structures with poly(vinyl alcohol) (PVA) and borax precursors. Fourier transform infrared spectroscopy showed that a polymer–boron ion complex was formed the crosslinking reaction at OH site of PVA; thereby, PCs were formed. Field-emission scanning electron microscopy uniform mesoporous two-dimensional structure via intermolecular intramolecular crosslinking. Trypsin enzyme phosphate fertilizer trapped these independently study Fertilizer-incorporated mixed soil samples, seeds fenugreek sown, plant growth monitored duration 15 days. The release, studied UV–visible spectroscopy, signature (at 690 nm) water extracts soil, much healthier compared control. For trypsin-incorporated PC released made interact bovine serum albumin protein monitor percentage UV absorption spectroscopy. A systematic increase 280 observed for 60 min; this indicated potential drug swelling calculations predicted mechanism involved composed pseudo-swelling behavior. envisaged hydroxyl groups broke water. This slowly dissolved release entrapped molecules. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci,