Immobile plasticizer in flexible PVC | Nature
Plasticized poly (vinyl chloride) (PVC) is one of the most widely used polymeric materials in medical and related applications, and usually contains up to 40 per cent di- (2-ethylhexyl)phthalate...
Eastman Plasticizers for PVC
Benzoflex - 181 Plasticizer Benzoflex181 is a water white alkyl benzoate ester with low odor, low viscosity and excellent compatibility with PVC. Benzoflex181’s principal use is as a low viscosity plasticizer for plastisol applications. Benzoflex 181 may also be used in other applications requiring a low viscosity, high solvating plasticizer.
Plasticizers | ExxonMobil Product Solutions
Jayflex linear plasticizers are used to prepare a series of premium flexible PVC products, where the performance requirements cannot be met with branched plasticizers. Learn more MB10 plasticizer
Citroflex Plasticizers for Flexible PVC - ChemPoint
Vertellus Citroflex delivers excellent plasticizer performances in aqueous- and solvent-based polymers, including acrylic, methacrylic, ethyl cellulose, hydroxypropyl methyl cellulose, vinyl acetates, vinyl chloride, and urethane polymer systems. Available in either hydrophilic or lipophilic esters, formulators control the polymer system
A Comparison of Plasticizers for Use in Flexible Vinyl
In Study 1, plasticizer levels were adjusted to create molded compounds that were at a constant or standard 100% modulus value. 1 The compounding procedure was designed as follows: ingredients were mixed well by spatula and then placed on a two-roll, 6 x 13-in. mill heated to between 140° and 177°C, depending on the compound, for 5 minutes from the point that the material fluxed.
- Is PVC a good plasticizer?
- Thermal stability studies showed that PVC blends with HPGs were more stable (exhibiting higher onset temperature values on TGA curves) than samples with DEHP. A great number of ether and ester groups in a plasticizer molecule provide donor-acceptor interactions with PVC, resulting in an excellent migration resistance.
- How does an efficient plasticizer interact with PVC?
- An efficient plasticizer interacts with PVC and breaks the extended network of chain-to-chain dipole-induced dipole forces present originally in a polymer that is observed as an attenuation of a signal coming from the covalent bonds. The stronger the interactions, the more prominent the shift of particular peaks to the lower wavenumber .
- Does covalent bonding affect plasticization efficiency?
- Covalent bonding of plasticizer molecules and PVC chains is an effective way to suppress the migration of a plasticizer from plastics. Although they not able to exhibit good plasticization efficiency, new internal plasticizers are still developed. There are several studies describing internal plasticizers and this issue is still being investigated.
- What are the different types of plasticizers?
- There are two main groups of plasticizers: primary—the main plasticizer in a PVC blend, added in large quantities and highly compatible with PVC; and secondary—having limited compatibility with PVC, easily migrating, especially when used in excess and usually added to the blend to improve its properties or to reduce its costs . Figure 1.
- Which plasticizer molecule provides a beneficial interaction with the PVC chain?
- There exist numerous structures of plasticizer molecules that provide beneficial interactions with the PVC chain, like ester groups, epoxy groups, aromatic rings, hydroxyl groups, etc.
- Do plasticizers migrate from PVC to DOP?
- As expected, the migration of plasticizers was equal to zero. Mechanical properties of the material with modified PVC were compared to a material plasticized by DOP. The commonly used plasticizer provided significantly lower tensile strength and higher elongation at break than the modified one.
