TY - JOUR
T1 - Preparation, characterization and release of urea from wheat gluten electrospun membranes
AU - Castro-Enríquez, Daniela Denisse
AU - Rodríguez-Félix, Francisco
AU - Ramírez-Wong, Benjamín
AU - Torres-Chávez, Patricia Isabel
AU - Castillo-Ortega, María Mónica
AU - Rodríguez-Félix, Dora Evelia
AU - Armenta-Villegas, Lorena
AU - Ledesma-Osuna, Ana Irene
PY - 2012
Y1 - 2012
N2 - Homogeneous and thin porous membranes composed of oriented fibers were obtained from wheat gluten (WG) using the electrospinning technique. SEM micrographs showed an asymmetric structure and some porosity, which, in addition to a small thickness of 40 μm, are desirable characteristics for the membranes' potential application in release systems. The membranes were loaded with urea to obtain pastilles. FT-IR and DSC studies confirmed the existence of interactions via hydrogen bonding between urea and WG proteins. The pastilles were studied as prolonged-released systems of urea in water. The release of urea during the first 10 min was very fast; then, the rate of release decreased as it reached equilibrium at 300 min, with a total of ≈98% urea released. TGA analysis showed that the release system obtained is thermally stable up to a temperature of 117 °C. It was concluded that a prolonged-release system of urea could be satisfactorily produced using WG fibers obtained by electrospinning for potential application in agricultural crops.
AB - Homogeneous and thin porous membranes composed of oriented fibers were obtained from wheat gluten (WG) using the electrospinning technique. SEM micrographs showed an asymmetric structure and some porosity, which, in addition to a small thickness of 40 μm, are desirable characteristics for the membranes' potential application in release systems. The membranes were loaded with urea to obtain pastilles. FT-IR and DSC studies confirmed the existence of interactions via hydrogen bonding between urea and WG proteins. The pastilles were studied as prolonged-released systems of urea in water. The release of urea during the first 10 min was very fast; then, the rate of release decreased as it reached equilibrium at 300 min, with a total of ≈98% urea released. TGA analysis showed that the release system obtained is thermally stable up to a temperature of 117 °C. It was concluded that a prolonged-release system of urea could be satisfactorily produced using WG fibers obtained by electrospinning for potential application in agricultural crops.
KW - Electrospinning
KW - Prolonged-release system
KW - Urea
KW - Wheat gluten
UR - http://www.scopus.com/inward/record.url?scp=84876476167&partnerID=8YFLogxK
U2 - 10.3390/ma5122903
DO - 10.3390/ma5122903
M3 - Artículo
SN - 1996-1944
VL - 5
SP - 2903
EP - 2916
JO - Materials
JF - Materials
IS - 12
ER -