Solubility of Plasticizers, Polymers and Environmental
It means that the difference between solubility parameters of compatible polymer and plasticizer should be less than approximately 4 MPa 0.5. For example, PVC having a δ value of 21.4 MPa 0.5 is compatible with DBP, DEHP and ditridecyl phthalate over the whole range of concentration.
Structure Design, Performance Simulation and Plasticizing
The plasticizing performance of the copolyester is characterized by FT-IR, H-NMR, XPS and DMA. It is found that the side chain groups in the structural units of the copolyester have a great influence on its plasticizing properties.
Comparison of the Density and Solubility Parameter of Pure
The calculated solubility parameters for the pure plasticizers and PVC (previously listed in Table 3) are replotted in Figure 9 for easier comparison. Plasticizers all have much higher δ...
Interfacial effects of plasticizers on the properties
Solubility parameter method is widely applied to evaluate plasticizing effect. The following calculations were operated by referring to the A. Greco's method (Greco et al. 2010; Van Krevelen and Te Nijenhuis 2009a ). The solubility parameters of CDA and plasticizers can be achieved as following:
AQUACOAT ECD: CRITICAL FORMULATION ATTRIBUTES OF PLASTICIZER
functions, plasticizer can also be used as an additive to influence drug release rates. 1. Plasticizer amount. Plasticizer selection is determined mainly . by glass transition temperature and solubility parameters. The concentration and type of plasticizer in a coating formulation should be optimized as it plays a critical role in controlling film
- Does plasticizer molecular structure affect its performance?
- Effects of plasticizer molecular structure on its performance, as measured by performance metrics including its thermodynamic compatibility with PVC, effectiveness of reducing the material’s Young’s modulus, and migration rate in the PVC matrix, are evaluated in the framework of seven molecular design parameters.
- Can MD simulation predict the solubility parameters of polymers and plasticizers?
- The amorphous models of SEBS with TA, DEP, DOS, and WO were constructed, and the solubility parameters of each substance were calculated by MD method. The relative error between the simulated value and the literature value was less than 3%, indicating that MD simulation can be used to predict the solubility parameters of polymers and plasticizers.
- Are plasticizers more soluble than PVC?
- The calculated solubility parameters for the pure plasticizers and PVC (previously listed in Table 3) are replotted in Figure 9 for easier comparison. Plasticizers all have much higher δ than PVC, and its value decreases monotonically with the alkyl side chain length. ...
- Does PSCH plasticizer reduce polarity of PVC mol-ecules?
- The results show that the plasticizing eficiency of PSCH plasticizer is superior to that of other polyester plasticizers, up to 153%. The diference of solubil-ity parameters DS between PSCH and PVC is the smallest, and the decrease of C–Cl bond energy in XPS also proves that PSCH can efectively reduce the polarity of PVC mol-ecules.
- How to predict miscibility of SEBS with four plasticizers?
- The miscibility of SEBS with four plasticizers, triacetin (TA), DEP, DOS, and 26# industrial white oil (WO), was predicted by solubility parameter, radial distribution function, and interaction energy distribution obtained by blend miscibility simulation.
- What is the relationship between plasticizer molecule and PVC molecule?
- The stronger interaction between plasticizer molecule and PVC molecule, the greater the compatibility. In formula 5, δ is the solubility parameter, ΔE is energy of vaporization, Vi is molar volume, and Fi is the molar attraction constant. ρ and M are the density and molecu-lar weight of the plasticizer or chain unit of the polymer, respectively.
