Plasticizers: Types, Uses, Classification, Selection & Regulation
Plasticizers increase the flow and thermoplasticity of a polymer by decreasing the viscosity of the polymer melt. Most common plasticiser chemistries include citrates, benzoates, ortho-phthalates, terephthalates, adipates, azelates, sebacates, and trimellitates. Plasticizers are the most common additives used in the plastics industry.
Plasticizer - an overview | ScienceDirect Topics
Good plasticization involves interspersing plasticizer molecules between PVC chains, breaking the small amount of native PVC crystallinity, and internally lubricating the polymer blend. While there is no formal chemical bond between plasticizer and polymer, the polar attraction between them makes plasticized PVC more than a simple physical mixture.
Natural-based plasticizers and biopolymer films: A review
The benefit of using external plasticizers, compared to internal ones, is the chance to select the right substance depending on the desired product properties [22]. Plasticizers can also be classified as primary and secondary [23]. If a polymer is soluble in a plasticizer at a high concentration of the polymer, it is said to be a primary
Influence of plasticizer on ionic conductivity of PVC-PBMA
Conductivity of 1.879 × 10 4 S cm 1 is exhibited by the polymer electrolyte consisting of 69% of plasticizer with appreciable thermal stability up to 523 K. Temperature and frequency dependence of conductivity is found to follow Vogel Tammann Fulcher relation and Jonscher power law, respectively.
Plasticizers in Paint & Coatings: Uses, Types and Selection
DOP or DnOP is light-colored, low volatility & odorless liquid. It was the most commonly used all-purpose plasticizer, although mainly used for polyvinyl chloride (PVC) resins. It is insoluble in water & has a low viscosity of 56 mPa.s at 25°C. DOP features: Good stability to heat and ultraviolet light; Broad range of compatibility, and
- Do plasticizers deteriorate the thermal stability of plasticized PVC?
- When plasticized samples were subjected to the same temperature ramp, dramatic differences were observed compared to the above results for the plasticizers alone. Unplasticized PVC was stable up to 212 °C, whereas the addition of plasticizers deteriorated its thermal stability to some extent for every plasticizer studied.
- Are plasticizers a good choice for PVC?
- According to the statistics, the total output of PVC in the world was over 49.0 million tons in 2019 . However, as a rigid polymer, pure PVC have certain drawbacks without any additives . Therefore, plasticizers are generally blended to improve the mechanical properties and thermal stability of PVC materials , .
- Can biobased plasticizer be used as a heat stabilizer?
- The plasticizing effect of single biobased plasticizer is not good. Biobased plasticizer with synergistic effects is required. There exists the trade-off effect between the molecular weight and the compatibility. Epoxidized isosorbide ester can be used as a heat stabilizer. The authors declare that they have no conflict of interest.
- 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 .
- Why does a polymer-plasticizer system have a tendency to be removed?
- In a polymer–plasticizer system, the polymer and plasticizer molecules are continuously undergoing association and segregation. Hence, the tendency of the plasticizer to be removed from the system is very real.
- 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.
