Poly( -caprolactone) (PCL) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) were blended in different ratio, e.g. 30/70, 50/50 and 70/30 (w/w), by means of solvent casting or electrospinning. Microstructure, thermal and mechanical properties of cast films and non-woven mats were investigated by means of scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), differential scanning calorimetry (DSC), and uniaxial tensile test. The microstructure of PHBV/PCL solvent cast films (thickness 65–100 m) was strictly dependent on the composition of the blend, a clean phase separation was observed for the 50/50 (w/w) sample. All electrospun PHBV/PCL blends (thickness 350–800 m) were characterised by uniform and homogenous fibers, the average size was about 3 m. Both techniques led to polymeric blends comprised of separate crystalline domains associated to an amorphous interdisperse phase. It has also been demonstrated that electrospun PHBV/PCL blends showed a lower segregation degree among the crystalline domains. Solvent cast blends were characterised by superior mechanical properties in terms of tensile modulus and tensile strength compared to electrospun ones. Fractured electrospun blends showed an overall fiber rearrangement in the direction of the applied load, eventually highlighting multiple necking regions along the fibers

Del Gaudio, C., Ercolani, E., Nanni, F., Bianco, A. (2010). Assessment of poly(ε-caprolactone)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) blends processed by solvent casting and electrospinning. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 528(3), 1764-1772 [10.1016/j.msea.2010.11.012].

Assessment of poly(ε-caprolactone)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) blends processed by solvent casting and electrospinning

NANNI, FRANCESCA;BIANCO, ALESSANDRA
2010-01-01

Abstract

Poly( -caprolactone) (PCL) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) were blended in different ratio, e.g. 30/70, 50/50 and 70/30 (w/w), by means of solvent casting or electrospinning. Microstructure, thermal and mechanical properties of cast films and non-woven mats were investigated by means of scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), differential scanning calorimetry (DSC), and uniaxial tensile test. The microstructure of PHBV/PCL solvent cast films (thickness 65–100 m) was strictly dependent on the composition of the blend, a clean phase separation was observed for the 50/50 (w/w) sample. All electrospun PHBV/PCL blends (thickness 350–800 m) were characterised by uniform and homogenous fibers, the average size was about 3 m. Both techniques led to polymeric blends comprised of separate crystalline domains associated to an amorphous interdisperse phase. It has also been demonstrated that electrospun PHBV/PCL blends showed a lower segregation degree among the crystalline domains. Solvent cast blends were characterised by superior mechanical properties in terms of tensile modulus and tensile strength compared to electrospun ones. Fractured electrospun blends showed an overall fiber rearrangement in the direction of the applied load, eventually highlighting multiple necking regions along the fibers
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore ING-IND/22 - Scienza e Tecnologia dei Materiali
English
Con Impact Factor ISI
Del Gaudio, C., Ercolani, E., Nanni, F., Bianco, A. (2010). Assessment of poly(ε-caprolactone)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) blends processed by solvent casting and electrospinning. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 528(3), 1764-1772 [10.1016/j.msea.2010.11.012].
Del Gaudio, C; Ercolani, E; Nanni, F; Bianco, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/14044
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