Biodegradable Colour Polymeric Film (Starch-Chitosan) Development: Characterization for Packaging Materials

Abstract

Biodegradable starch-based chitosan reinforced composite polymeric films were prepared by casting. The chitosan content in the films was varied from 20% to 80% (w/w). Tensile strength (TS) was improved significantly with the addition of chitosan but elongation at break (EB %) of the composites decreased. Tensile strength of the composites raised more with the addition of the acacia catechu content in the films varied from 0.05% to 0.2% (w/w). The better thermal stability of this prepared film was confirmed by thermo-gravimetric analysis. Structural characterization was done by Fourier transform infrared spectroscopy. Surface morphologies of the composites were examined by scanning electron microscope (SEM) which suggested sufficient homogenization of starch, chitosan and acacia catechu. Water uptake was found lower for final composites in comparison to starch/chitosan and chitosan films. The satisfactory rate of degradation in the soil is expected that the final composite film is within less than 6 months. The developed films intended to use as the alternative of synthetic non-biodegradable colored packaging films.

Chitosan Loses Innate Beneficial Properties after Being Dissolved in Acetic Acid: Supported by Detailed Molecular Modeling

“…The SCF becomes more soluble because, after dissolution in acetic acids, the salts of the acid remain inside the d -glucosamine units. The presence of acid salts provides more binding sites for water molecules, and as a result, enhancing the overall solubility of SCFs . The increase in soil degradability can be attributed to the incorporation of glycerol as a plasticizing agent.…”

“…The presence of acid salts provides more binding sites for water molecules, and as a result, enhancing the overall solubility of SCFs. 45 The increase in soil degradability can be attributed to the incorporation of glycerol as a plasticizing agent. It is known that glycerol is a strong swelling reagent, swelling the SCF in soil conditions.…”

Investigation of Galactomannan/deacetylated Chitosan Nanocomposite Films and their Anti-bacterial Properties

“…The interaction mechanism of DE-ChN and GM in nanocomposite lms as can be seen from Figure .4. The addition of polysaccharide enhanced the hydrogen bonding force between GM molecules, thereby increasing the tensile strength of the GM/DE-ChN nanocomposite lm (Mollah et al 2016). According to the data in Table 1, when the addition amount of DE-ChN was 60%, the maximum tensile strength of GM/DE-ChN nanocomposite lm was 107 MPa, which was 343% higher than the original GM lm.…”

Synthesis, Characterization and Applications of Nanochitosan/Sodium Alginate/Microcrystalline Cellulose Film

“…The SEM The SEM micrograph obtained for the pure chitosan ( Figure 11) revealed that the texture is plain without pores having smooth, compact and homogeneous even surface structure with no gross effects [52].…”