Plasticizers for Biopolymer Films - Glass Transition and
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).
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]. Hydrophilic plasticizers dissolve in the aqueous medium when they are added to polymer dispersions and if added in high
Natural-based plasticizers and biopolymer films: A review
Plasticizers, for biopolymer-based lms, can be divided into water soluble and water insoluble [25]. The type and the amount of plasticizer strongly affect the lm formation from polymeric aqueous dispersions [26]. Hydrophilic plasticizers dissolve in the aqueous medium when they are added to polymer dispersions and if added in high con-
Plasticizers for Biopolymer Films - Glass Transition and
Plasticizers are important additives that diminish the brittleness and impart adequate flexibility and processability to polymers. 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
Natural-based plasticizers and biopolymer films: A review
The plasticized films exhibited increased water vapor permeability values from 4.855 × 1010 to 8.70 × 1010 g·m1·s1·Pa1, irrespective of plasticizer types. Overall, the current study manifested that plasticized sugar palm starch can be regarded as a promising biopolymer for biodegradable films.
- 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.
- Why are phthalate plasticizers becoming bioplasticizers?
- Owing to health concerns, depletion of crude resources and other factors, there is a gradual drift from traditional phthalate plasticizers to bioplasticizers in the plastic industry. Bioplasticizers are derived mainly from biomass sources including agricultural products, it’s by-products and waste.
- What are natural based plasticizers?
- Nowadays, there is increasing interest in the use of natural-based plasticizers that are characterized by low toxicity and low migration. This group includes epoxidized triglyceride vegetable oils from soybean oil, linseed oil, castor-oil, sunflower oil, and fatty acid esters (FAEs) .
- 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.
- 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 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.
