Physically and Chemically Cross-Linked Poly(vinyl alcohol)/Humic Acid Hydrogels for Agricultural Applications
Ana V. Torres-Figueroa,
Sergio de los Santos-Villalobos,
Dora E. Rodríguez-Félix
et al.
Abstract:The preparation method
of hydrogels has a significant
effect on
their structural and physicochemical properties. In this report, physically
and chemically cross-linked poly(vinyl alcohol) (PVA) networks containing
humic acid (HA) were alternatively prepared by autoclaving (AC) and
through glutaraldehyde (GA) addition, respectively, for agricultural
purposes. PVA/HA hydrogels were comparatively characterized by Fourier
transform infrared spectroscopy, thermogravimetric analysis, mechanical
assays, scanning ele… Show more
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