Polymers | Free Full-Text | Effect of Plasticizer Type and
The use of starch based films as a potential alternative choice to petroleum derived plastics is imperative for environmental waste management. This study presents a new biopolymer (sugar palm starch) for the preparation of biodegradable packaging films using a solution casting technique. The effect of different plasticizer types (glycerol (G), sorbitol (S) and glycerol-sorbitol (GS
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Effects of plasticizer type and concentration on rheological, physico
The purpose of this study was to evaluate the effect of plasticizer type (glycerol, PEG-400, and sorbitol) and concentration (0%, 15%, 30% and 45%, w/w dry polymer weight) on rheological and physico-mechanical and structural properties of chitosan/zein blend film.
Effect of Plasticizer Type and Concentration on Tensile, Thermal and
The effect of different plasticizer types (glycerol (G), sorbitol (S) and glycerol-sorbitol (GS) combination) with varying concentrations (0, 15, 30 and 45, w/w%) on the tensile, thermal and...
Full article: Physico-mechanical and microstructural properties
Hence, the objective of this work was to examine the influence of plasticizer mix (sorbitol and glycerol) concentrations on the physical (solubility, barrier to water vapor, oxygen, and color), mechanical (tensile strength [TS], elongation-at-break [EAB], and elastic modulus [EM]), thermal, and structural characteristics of novel plasticized semolina flour films.
- What factors affect plasticizer efficiency?
- Internal mobility (flexibility): This parameter plays a crucial role in determining plasticizer efficiency. This is true for various polymers unless polymer crystallinity is involved. The reduction of Tg is proportional to the temperature difference between the Tg of the polymer and plasticizer.
- Does plasticizer concentration affect thermal properties of s-plasticized films?
- Change in plasticizer concentration showed an insignificant effect on the thermal properties of S-plasticized films. The glass transition temperature of SPS films slightly decreased as the plasticizer concentration increased from 15% to 45%.
- How does plasticizer affect the rheological properties of film-forming solution?
- Plasticizer influenced the rheological properties of film-forming solution. Plasticizer was efficient for the improvement of properties of blend film. The chitosan/zein film with PEG-400 exhibited superior properties.
- How do plasticizers affect a polymer?
- Plasticizers are expected to reduce the modulus, tensile strength, hardness, density, melt viscosity, glass transition temperature, electrostatic chargeability and volume resistivity of a polymer, while at the same time increasing its flexibility, elongation at break, toughness, dielectric constant and power factor .
- Why do plasticizers change properties?
- This change is due to the addition of specific additives, especially plasticizers. A plasticizer is a non-volatile substance incorporated in a plastic or elastomer. It changes the thermal and mechanical properties of the material. The expected property changes in a plasticized plastic or elastomer are as follows:
- Does plasticizer concentration increase W/W?
- (15%–45% w/w). The results show that increasing the plasticizer concentration from 15% to 45% 8.514 × 10 −10 g·s−1·m−1·Pa−1 for GS-plasticized films. The plasticized films exhibited increased WVP values regardless of plasticizer type.