Chitosan-based biodegradable functional films for food packaging
Chitosan has a DA of less than 40% and nitrogen content greater than 7%. The presence of the amino group in chitosan renders it with functional properties; the electronegative amino group takes up protons and develops a positive charge providing chitosan with various chemical, physical, and biological properties.
Effect of Plasticizer and Chitosan Composition on the Plastic
plastics in addition to chitosan more properties rigid and hard plastic, while plastic has plasticizer composition that has many properties of elastic and thin. Figure 3 .1 Bioplastics produced a sheet of thin and transparent Table 1.1 Tensile Test Results Analysis & Percent Elongation B. Tensile Strength test
The effect of plasticizer on the development of chitosan-based
Bioplastics are plastics derived from materials that can be decomposed by nature. A series of bioplastics based on chitosan and modified chitosan have been produced, namely chitosan thin film (C) c...
Effect of Plasticizer Content on Mechanical and Water Vapor
The effect of plasticizer concentration (15%, 30%, and 45% (w/w)) on the WVP, morphology, and thermal and mechanical properties of composite films based on maize starch/poly(vinyl alcohol)/chitosan was evaluated.
Title: A Review on Plasticizers and Eco-Friendly Bioplasticizers
Plasticizers are chemical additives added into polymers to influence desirable mechanical properties such as processability and ductility. These properties are a result of the association of...
- How does chitosan affect biodegradable plastic?
- Composition of chitosan and the plasticizer also affect the physical properties of the biodegradable plastic. According Krochta (1997), higher concentrations of the chitosan produced plastic structure more rigid and hard, causing the value of the resulting high tensile strength. .
- Can chitosan glycerol be used as a biodegradable plasticizer?
- Meanwhile, PVA itself is widely used in polymer blends because it can increase the flexibility and tensile strength of biodegradable plastic. The aim of this study is to develop a biodegradable plastic based on chitosan, cassava starch, and PVA with the addition of crude glycerol as a plasticizer.
- What is the difference between chitosan and plasticizer?
- Results obtained is the form of a thin sheet of plastic biodegradable tested mechanical properties. The addition of plasticizers with high levels produces biodegradable plastics with low tensile strength values, and the high percent of flexibility. While the addition of chitosan with high levels produces the opposite results.
- Why is chitosan used in polymer blends?
- Chitosan has often been used as an additive in starch or PVA mixtures because of its biodegradability. Meanwhile, PVA itself is widely used in polymer blends because it can increase the flexibility and tensile strength of biodegradable plastic.
- What is a good plasticizer concentration for chitosan films?
- The plasticizer concentration of 20 % GLY is sufficient for obtaining flexible chitosan films with good mechanical properties, and it could serve as an alternative as a packaging material to reduce environmental problems associated with synthetic packaging films.
- Do chitosan films have a plasticization effect?
- The prepared films were colorless, transparent, homogeneous and uniform. However, the WVTR values were increased when GLY was added to the chitosan films. Furthermore, the chitosan films plasticized with 20 % GLY exhibited plasticization characteristics, but when the content was increased, the antiplasticization effect was observed.
