Development and characterization of starch films prepared by extrusion blowing: The synergistic plasticizing effect of water and glycerol

Gao W., Zhu J., Kang X., Wang B., Liu P., Cui B., ...Daha Fazla

LWT, cilt.148, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 148
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.lwt.2021.111820
  • Dergi Adı: LWT
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Food Science & Technology Abstracts, Veterinary Science Database
  • Anahtar Kelimeler: Synergistic plasticizing effect, Water and glycerol, Starch film, Properties, Extrusion blowing, PHYSICOCHEMICAL PROPERTIES, CORN STARCH, SURFACE MODIFICATION, GRANULE
  • Atatürk Üniversitesi Adresli: Evet

Özet

© 2021 Elsevier LtdHerein, we have investigated the synergistic plasticizing effect of water (W) and glycerol (G) on the physicochemical and structural properties of starch-based films prepared by extrusion blowing. Fourier transform infrared spectroscopy (FT-IR) revealed that glycerol could act as a typical plasticizer in the presence of sufficient amounts of water (approximately 15%). All the films exhibited a B + V-type crystalline structure by X-ray diffraction (XRD). We hypothesize that there were two stages for the effect of plasticizer on the mechanical properties of the composite film. The crystallinity, thermal stability, and water vapor permeability (WVP) of the film initially decreased and then increased with increasing water content from 0 to 20%. The opposite trends were observed for surface smoothness and surface hydrophobicity. Moreover, the addition of 15% G-15% W co-plasticizers was optimal for film blowing, which can substantially reduce the cost of producing starch-based films.