Full article: Physical, thermal, morphological, and tensile properties
Hence, the films containing 40% and 55% of plasticizers were thicker than films containing 25% plasticizers. These observations may be relevant to the plasticizer function in reconstructing the molecular chain of the polymer film, where the higher plasticizer content generates more spaces, resulting in thickening of the film thickness.
Natural-based plasticizers and biopolymer films: A review
Plasticizers, for biopolymer-based films, can be divided into water soluble and water insoluble [25]. The type and the amount of plasticizer strongly affect the film formation from polymeric aqueous dispersions [26].
Plasticizers for Biopolymer Films - Wiley Online Library
Plasticizers are low molecular weight agents added to polymeric materials such as plastics, biopolymer based films, paints, or adhesives, to produce or promote plasticity, flexibility, processability and to reduce brittleness by lowering the glass transition temperature (Tg).
Glycerol as an efficient plasticizer to increase the DC conductivity
The host polymeric raw materials were polyvinyl alcohol (PVA) and methylcellulose (MC) powders, the ionic source was sodium iodide (NaI) salt, and the plasticizer was glycerol. Sigma-Aldrich provided all of the chemical components (Kuala Lumpur, Malaysia).
Chitosan–Gelatin Films: Plasticizers/Nanofillers Affect Chain
Biopolymers, which are biodegradable and inherently functional, have high potential for specialized applications (e.g., disposable and transient systems and biomedical treatment). For this, it is important to create composite materials with precisely defined chain interactions and tailored properties. This work shows that for a chitosan–gelatin material, both glycerol and isosorbide are
- What are plasticizers used for?
- Plasticizers are low molecular weight agents added to polymeric materials such as plastics, biopolymer based films, paints, or adhesives, to produce or promote plasticity, flexibility, processability and to reduce brittleness by lowering the glass transition temperature (Tg).
- Are biopolymers a good substitute for conventional plasticizers?
- The use of natural and/or biodegradable plasticizers, with low toxicity and good compatibility with several plastics, resins, rubber and elastomers in substitution of conventional plasticizers, such as phthalates and other synthetic conventional plasticizers attracted the market along with the increasing worldwide trend towards use of biopolymers.
- Can biopolymers replace petroleum-based plastics with biodegradable materials?
- In recent years, much attention has been focused on research to replace petroleum-based commodity plastics, in a cost-effective manner, with biodegradable materials offering competitive mechanical properties. Biopolymers have been considered as the most promising materials for this purpose.
- Which polymers are plasticized?
- The plasticizers produced have been applied in 60 polymers and more than 30 groups of products. Industrially, the most common plasticized polymers are PVC, poly (vinyl butyral) (PVB), poly (vinyl acetate) (PVAc), acrylics, cellulose molding compounds, nylon, polyamides and certain copolyamides.
- Are biopolymers hygroscopic?
- Usually, biopolymers and plasticizers are hygroscopic and therefore film moisture content is affected by ambient conditions. Besides, water is the main solvent in the natural biopolymer technology. Its molecules reduce the Tg and increase the free volume of biomaterials, and thus are considered as plasticizers.
- Can bio-based plasticizers replace conventional plastic goods?
- The challenge to implement this new class of natural-based plasticizers matches the increasing interest of material researchers and industries in new bio-based materials, made from renewable resources with the potential, not to totally replace but to reduce the use of conventional plastic goods.
