Electrospinning of agar/PVA aqueous solutions and its relation with rheological properties.
Carbohydr Polym
; 115: 348-55, 2015 Jan 22.
Article
en En
| MEDLINE
| ID: mdl-25439904
ABSTRACT
In this work, we report the successful fabrication of agar-based nanofibers by electrospinning technique, using water as solvent media. A tubeless spinneret was attached inside the electrospinning chamber, operating at 50°C, to avoid agar gelation. Agar pure solution (1 wt%) showed inadequate spinnability regardless of the used electrospinning conditions. The addition of a co-blending polymer such as PVA (10 wt% starting solution) improved the solutions viscoelasticity and hence, the solutions spinnability. Agar/PVA solutions were prepared with different mass ratios (100/0, 50/50, 40/60, 30/70, 20/80 and 0/100) and electrospun at various sets of electrospinning conditions. Best nanofibers were obtained with 30/70 and 20/80 agar/PVA blends while samples with higher agar contents (50/50 and 40/60 agar/PVA) were harder to process and led to discontinuous fibrous mats. This first set of encouraging results can open a new window of opportunities for agar-based biomaterials in the form of nanofibers.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Alcohol Polivinílico
/
Reología
/
Agua
/
Agar
/
Electricidad
Idioma:
En
Revista:
Carbohydr Polym
Año:
2015
Tipo del documento:
Article
País de afiliación:
Estados Unidos