Journal
CARBOHYDRATE POLYMERS
Volume 178, Issue -, Pages 260-269Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2017.09.026
Keywords
Active films; Antimicrobial properties; Cross-linking; Poly(epsilon-caprolactone); Starch
Categories
Funding
- Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET) [2417]
- Universidad Nacional de Mar del Plata (UNMdP)
Ask authors/readers for more resources
Plantain flour ( Musa ssp., group AAB, sub-group clone Harton)/ poly(e-caprolactone) (PCL) blends, containing glycerol as a plasticizer, were prepared by reactive extrusion (REx) in a twin-screw extruder using zirconium octanoate (Zr(Oct)(4)) as a catalyst, followed by thermo-compression molding for film development. The films were then characterized in terms of their: infrared (FTIR) spectra, water solubility, thermogravimetric (TGA) curves, differential scanning calorimetry (DSC) thermograms, and X-ray diffraction (XDR) diffractograms, as well as their microstructural, mechanical and antimicrobial properties in order to (1) compare the effects of PCLs with two different molecular weights (M-w) on the characteristics of the plantain flour/PCL blends, and (2) determine whether using Zr(Oct)(4) in the production of active composite polymer materials improves their properties. The plantain flour/PCL blends were all developed successfully. The higher Mw PCL gave more hydrophobic and thermally stable films with improved mechanical properties. The addition of the Zr(Oct)(4) catalyst to the plantain flour/PCL blends also resulted in films with similar characteristics to those described above, due to the cross-linking of the polymers. In addition, the films containing the catalyst showed antimicrobial activity against Escherichia coli O157: H7 and Staphylococcus aureus indicating a dual effect of Zr(Oct)(4), and making it an attractive alternative for the development of active films.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available