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).
Natural-based plasticizers and biopolymer films: A review
Natural plasticizers used in biodegradable films from biomass products (polysaccharide-, protein-, and lipid-based films) or other films obtained by extraction of micro-organisms. Refs. Soybean oil (SO), epoxidized soybean oil (ESO), dibutyl phthalate (DBP) and triethyl citrate (TEC) 6.1.
Effect of glycerol plasticizer loading on the physical
Among the plasticizing agents, glycerol has been used as a plasticizer to produce starch-based films because of its compatibility with amylose 50, which stimulates better mechanical properties...
Title: A Review on Plasticizers and Eco-Friendly Bioplasticizers
Bioplasticizers such as epoxidized plant oils, cardanol, citrates and Isorbide esters are derived from further modifications of oils and triglyceride, starch and cellulose, citric acids and...
Chitosan–Gelatin Films: Plasticizers/Nanofillers Affect Chain
Plasticizers help to break the original hydrogen bonds and the crystalline structure in biopolymers and to endow the produced biopolymer materials with flexibility and elasticity by acting as spacers between chains, limiting polymer chain interactions, and increasing chain mobility.
- 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).
- Why are plasticizers important in biopolymer-based films & coatings production?
- In biopolymer-based films and coatings production, plasticizers are also essential additives since they can improve flexibility and handling of films, maintain integrity and avoid pores and cracks in the polymeric matrix .
- 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.
- 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.
- 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) .
- What are biodegradable plasticizers?
- Biodegradable plasticizers such as soybean oil (SO), epoxidized soybean oil (ESO), dibutyl phthalate (DBP) and triethyl citrate (TEC) were added to poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) films, enhancing their thermal and mechanical properties. TEC or DBP presented better plasticizing effects than SO and ESO for PHBV .
